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Paclitaxel Impurity 35 Paclitaxel Impurity 35. Uses: For analytical and research use. Group: Impurity standards. CAS No. 153212-75-0. Molecular formula: C47H51NO15. Mole weight: 869.92. Catalog: APB153212750. Alfa Chemistry Analytical Products 4
Paclitaxel Impurity 4 (Docetaxel Impurity 33) Paclitaxel Impurity 4 (Docetaxel Impurity 33). Uses: For analytical and research use. Group: Impurity standards. CAS No. 154083-99-5. Molecular formula: C29H36O11. Mole weight: 560.6. Catalog: APB154083995. Alfa Chemistry Analytical Products 4
Paclitaxel impurity mixture United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standards. Alfa Chemistry Analytical Products
Paclitaxel EP Impurity B (Cephalomannine) Cephalomannine is an active anti-cancer agent obtained from Taxus yunnanensis and has an antineoplastic effect on tumors found in mice. Uses: Antitumor. Synonyms: 4,10β-Bis(acetyloxy)-1,7β-dihydroxy-13α-[[(2R,3S)-2-hydroxy-3-[[(2E)-2-methylbut-2-enoyl]amino]-3-phenylpropanoyl]oxy]-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate; N-Debenzoyl-N-tigloylpaclitaxel; Benzenepropanoic acid, α-hydroxy-β-[[(2E)-2-methyl-1-oxo-2-buten-1-yl]amino]-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; NSC 318735; Taxol B; USP Paclitaxel Related Compound A; Paclitaxel impurity B; Benzenepropanoic acid, α-hydroxy-β-[(2-methyl-1-oxo-2-butenyl)amino]-, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2aα,4β,4aβ,6β,9α[αR*,βS*(E)],11α,12α,12aα,12bα]]-; Paclitaxel Related Compound A; Paclitaxel USP Related Compound A. Grade: 96%. CAS No. 71610-00-9. Molecular formula: C45H53NO14. Mole weight: 831.90. BOC Sciences 2
Paclitaxel EP Impurity C Paclitaxel EP Impurity C. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12-(benzoyloxy)-9-(((2R,3S)-3-hexanamido-2-hydroxy-3-phenylpropanoyl)oxy)-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b-diyl diacetate. CAS No. 153415-45-3. Molecular formula: C46H57NO14. Mole weight: 847.94. Catalog: APB153415453. Alfa Chemistry Analytical Products 4
Paclitaxel EP Impurity D Paclitaxel EP Impurity D. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 7-epi-Cephalomannine; (2aR,4R,4aS,6R,9S,11S,12S,12aR,12bS)-12-(benzoyloxy)-4,11-dihydroxy-9-(((2R,3S)-2-hydroxy-3-((E)-2-methylbut-2-enamido)-3-phenylpropanoyl)oxy)-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b-diyl diacetate. CAS No. 150547-36-7. Molecular formula: C45H53NO14. Mole weight: 831.9. Catalog: APB150547367. Alfa Chemistry Analytical Products 4
Paclitaxel EP Impurity E Paclitaxel EP Impurity E is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: 4,10β-Bis(acetyloxy)-13α-[[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy]-1,7α-dihydroxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate; 7-epi-Paclitaxel; 7-Epipaclitaxel; 7-Epitaxol; 7-epi-Taxol; Epitaxol; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, (2aR,4R,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2aα,4α,4aβ,6β,9α(αR*,βS*),11α,12α,12aα,12bα]]-; (2aR,4R,4aS,6R,9S,11S,12S,12bS)-9-(((2R,3S)-3-Benzamido-2-hydroxy-3-phenylpropanoyl)oxy)-12-(benzoyloxy)-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate. Grade: >98%. CAS No. 105454-04-4. Molecular formula: C47H51NO14. Mole weight: 853.91. BOC Sciences 9
Paclitaxel EP Impurity E Paclitaxel EP Impurity E. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 7-epi Paclitaxel; (2aR,4R,4aS,6R,9S,11S,12S,12aR,12bS)-9-(((2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl)oxy)-12-(benzoyloxy)-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b-diyl diacetate. CAS No. 105454-04-4. Molecular formula: C47H51NO14. Mole weight: 853.91. Catalog: APB105454044. Alfa Chemistry Analytical Products 4
Paclitaxel EP Impurity F Paclitaxel EP Impurity F. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: N-methylpaclitaxel C; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12-(benzoyloxy)-4,11-dihydroxy-9-(((2R,3S)-2-hydroxy-3-(N-methylhexanamido)-3-phenylpropanoyl)oxy)-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b-diyl diacetate. CAS No. 153083-53-5. Molecular formula: C47H59NO14. Mole weight: 861.97. Catalog: APB153083535. Alfa Chemistry Analytical Products 4
Paclitaxel EP Impurity G Paclitaxel EP Impurity G is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: 4-(Acetyloxy)-13α-[[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy]-1,7β,10β-trihydroxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate; 10-O-Deacetylpaclitaxel; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, 12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2aα,4β,4aβ,6β,9α(αR*,βS*),11α,12α,12aα,12bα]]-; 10-Deacetylpaclitaxel; 10-Deacetyltaxol; 10-Deacetyltaxol A; 10-Desacetylpaclitaxel; 10-Desacetyltaxol; 10-O-Deacetyltaxol; Paclitaxel impurity G; (2aR,4S,4aS,6R,9S,11S,12S,12bS)-12b-Acetoxy-9-(((2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl)oxy)-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate. Grade: >98%. CAS No. 78432-77-6. Molecular formula: C45H49N BOC Sciences 9
Paclitaxel EP Impurity H Paclitaxel EP Impurity H is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: 4-(Acetyloxy)-13α-[[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy]-1,7α,10β-trihydroxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate; 10-O-Deacetyl-7-epi-paclitaxel; 7-Epi-10-deacetyltaxol; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, (2aR,4R,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; 10-Deacetyl-7-epi-paclitaxel; 10-Deacetyl-7-epi-taxol; 10-Deacetyl-7-epipaclitaxel; 10-Deacetyl-7-epitaxol; 10-Desacetyl-7-epipaclitaxel; 7-epi-10-Deacetylpaclitaxel; Ormosin VI; USP Paclitaxel Related Compound B; Paclitaxel USP Related Compound B; Paclitaxel Related Compound B. Grade: ≥95%. CAS No. 78454-17-8. Molecular formula: C45H49NO13. Mole weight: 811.88. BOC Sciences 9
Paclitaxel EP Impurity N Baccatin III is a tetracyclic diterpenoid isolated from the barks of Taxus yunnanensis. It can be used as an intermediate in the synthesis of paclitaxel. Synonyms: 4,10β-Bis(acetyloxy)-1,7β,13α-trihydroxy-9-oxo-5β,20-epoxytax-11-en-2α-yl benzoate; 13-O-de[(2R,3S)-3-Benzamido-2-hydroxy-3-phenylpropanoyl]paclitaxel; Baccatin III; 7,11-Methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,9,11-trihydroxy-4a,8,13,13-tetramethyl-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,9,11-trihydroxy-4a,8,13,13-tetramethyl-7,11-methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one; 7,11-Methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,9,11-trihydroxy-4a,8,13,13-tetramethyl-, [2aR-(2aα,4β,4aβ,6β,9α,11α,12α,12aα,12bα)]-; NSC 330753; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12-(Benzoyloxy)-4,9,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate. Grade: ≥95%. CAS No. 27548-93-2. Molecular formula: C31H38O11. Mole weight: 586.63. BOC Sciences 2
10-Deacetyl Paclitaxel Ethyl Analogue An impurity of Paclitaxel which is the first taxane in clinical trials as a chemotherapy medicine. Synonyms: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-4,6,11-trihydroxy-9-(((2R,3S)-2-hydroxy-3-phenyl-3-propionamidopropanoyl)oxy)-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl Benzoate; 10-Deacetyl-3'-debenzoyl-3'-propanoylpaclitaxel. Grade: > 95%. CAS No. 173101-59-2. Molecular formula: C41H49NO13. Mole weight: 763.85. BOC Sciences 3
10-Deacetyl Paclitaxel Propyl Analogue An impurity of Paclitaxel which induces the expression of the gene for tumor necrosis factor α. Synonyms: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-9-(((2R,3S)-3-butyramido-2-hydroxy-3-phenylpropanoyl)oxy)-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl Benzoate; 10-Deacetyl-3'-debenzoyl-3'-butanoylpaclitaxel. Grade: > 95%. CAS No. 173101-47-8. Molecular formula: C42H51NO13. Mole weight: 777.87. BOC Sciences 3
10-Desacetyl Paclitaxel 10-Desacetyl Paclitaxel. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 7,11-Methano-1H-cyclodeca[3,4]benz[1,2-b]oxete, benzenepropanoic acid deriv., 10-Deacetylpaclitaxel, 10-Deacetyltaxol, 10-Desacetylpaclitaxel, 10-O-Deacetyltaxol,Benzenepropanoic acid, ?-(benzoylamino)-?-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (?R,?S)-, Benzenepropanoic acid, ?-(benzoylamino)-?-hydroxy-, 12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2a?,4?,4a?,6?,9?(?R*,?S*),11?,12?,12a?,12b?]]-, 10-Deacetyltaxol A, 10-Desacetyltaxol. CAS No. 78432-77-6. Molecular formula: C45H49NO13. Mole weight: 811.87. Catalog: APS78432776. SMILES: CC(=O)O[C@@]12CO[C@@H]1C[C@H](O)[C@]3(C)[C@@H]2[C@H](OC(=O)c4ccccc4)[C@]5(O)C[C@H](OC(=O)[C@H](O)[C@@H](NC(=O)c6ccccc6)c7ccccc7)C(=C([C@@H](O)C3=O)C5(C)C)C. Format: Neat. Alfa Chemistry Analytical Products 4
10-Methyl-7-(2-hydroxy-3-N-Boc-3-phenylpropionyl) Docetaxel 10-Methyl-7-(2-hydroxy-3-N-Boc-3-phenylpropionyl) Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: (2α,5β,7β,10β,13α)-4-Acetoxy-1-hydroxy-7,13-bis{[(2R,3S)-2-hydroxy-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)-3-phenylpropanoyl]oxy}-10-methoxy-9-oxo-5,20-epoxytax-11-en-2-yl benzoate; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-6-methoxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxete-4,9-diyl ester, (αR,βS)-. Molecular formula: C58H72N2O18. Mole weight: 1085.19. BOC Sciences 3
10- (O-2, 2-Dichloroethoxycarbonyl ) 13-(3-O-TES) 7-Epi Docetaxel 10- (O-2, 2-Dichloroethoxycarbonyl ) 13-(3-O-TES) 7-Epi Docetaxel is an impurity of Docetaxel Hydrate (D494420), a semisynthetic derivative of Paclitaxel(P132500), which is an antimitotic agent that promotes the assembly of micro-tubules and inhibits their de-polymerization to free tubulin. An antine oplastic. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 500ug, 1mg. Molecular Formula: C52H69Cl2NO16Si, Molecular Weight: 1063.08999999999. US Biological Life Sciences. USBiological 9
Worldwide
10-(O-2,2-Dichloroethoxycarbonyl) 13-(3-O-TES) 7-Epi Docetaxel 10-(O-2,2-Dichloroethoxycarbonyl) 13-(3-O-TES) 7-Epi Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: (2α,5β,7α,10β,13α)-4-Acetoxy-10-{[(2,2-dichloroethoxy)carbonyl]oxy}-1,7-dihydroxy-13-({(2R,3S)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)-3-phenyl-2-[(triethylsilyl)oxy]propanoyl}oxy)-9-oxo-5,20-epoxytax-11-en-2-yl benzoate; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-[(triethylsilyl)oxy]-, (2aR,4R,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-6-[[(2,2-dichloroethoxy)carbonyl]oxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-. Molecular formula: C52H69Cl2NO16Si. Mole weight: 1063.09. BOC Sciences 3
10-O-[(2R,3S)-3-(Benzoylamino)-2-hydroxy-3-phenylpropanoyl]-10-O-deacetylpaclitaxel 10-O-[(2R,3S)-3-(Benzoylamino)-2-hydroxy-3-phenylpropanoyl]-10-O-deacetylpaclitaxel is an impurity in the synthesis of Paclitaxel (P132500), an antineoplastic. Used in the study of structure and function of microtubles into tubulin. Paclitaxel is now used to treat patients with lung, ovarian, breast cancer, head and neck cancer, and advanced forms of Kaposi's sarcoma. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg, 10mg. Molecular Formula: C61H62N2O16. US Biological Life Sciences. USBiological 9
Worldwide
13,14-Anhydro-10-desacetyl Baccatin 13,14-Anhydro-10-desacetyl Baccatin is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: Docetaxel Impurity 24. CAS No. 1217248-58-2. Molecular formula: C29H34O9. Mole weight: 526.57. BOC Sciences 3
13-O-(Triethylsilyl) Baccatin III 13-O-(Triethylsilyl) Baccatin III is an impurity of Paclitaxel, which is a chemotherapy medication used to treat a number of types of cancer. Synonyms: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-9-[(triethylsilyl)oxy]-7,11-methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one; Paclitaxel Impurity 16 (13-(Triethylsilyl)baccatin III); (5beta,7beta,10beta,13alpha)-4,10-Bis(acetyloxy)-1,7-dihydroxy-9-oxo-13-[(triethylsilyl)oxy]-5,20-epoxytax-11-en-2-yl benzoate; 13-Tes-baccatin III; 7,11-Methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-9-[(triethylsilyl)oxy]-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-. Grade: 98%. CAS No. 208406-86-4. Molecular formula: C37H52O11Si. Mole weight: 700.89. BOC Sciences 3
13-Oxobaccatin III 13-Oxobaccatin III is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. CAS No. 32981-89-8. Molecular formula: C31H36O11. Mole weight: 584.6. BOC Sciences 3
2'-Ac-Docetaxel 2'-Ac-Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: 2'-O-Acetyldocetaxel; Docetaxel Impurity 57; (2α,5β,7β,10β,13α)-4-(acetyloxy)-13-({(2R,3S)-2-(acetyloxy)-3-[(tert-butoxycarbonyl)amino]-3-phenylpropanoyl}oxy)-1,7,10-trihydroxy-9-oxo-5,20-epoxytax-11-en-2-yl benzoate; Benzenepropanoic acid, α-(acetyloxy)-β-[[(1,1-dimethylethoxy)carbonyl]amino]-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; 2'-acetyldocetaxel. CAS No. 151509-27-2. Molecular formula: C45H55NO15. Mole weight: 849.92. BOC Sciences 3
2-Debenzoyl Paclitaxel 2-Pentanoate 2-Debenzoyl Paclitaxel 2-Pentanoate is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-[(1-oxopentyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-[(1-oxopentyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl (αR,βS)-β-(benzoylamino)-α-hydroxybenzenepropanoate; (αR,βS)-β-(Benzoylamino)-α-hydroxy-benzenepropanoic Acid (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-[(1-oxopentyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester. Grade: ≥95%. CAS No. 213767-22-7. Molecular formula: C45H55NO14. Mole weight: 833.94. BOC Sciences 4
2-Debenzoyl Paclitaxel 2-Pentanoate 2-Debenzoyl Paclitaxel 2-Pentanoate. Uses: For analytical and research use. Group: Chiral molecules; impurity standards. Alternative Names: Benzenepropanoic acid, ?-(benzoylamino)-?-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-[(1-oxopentyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (?R,?S)-. CAS No. 213767-22-7. Molecular formula: C45H55NO14. Mole weight: 833.92. Catalog: APS213767227. SMILES: CCCCC(=O)O[C@H]1[C@@H]2[C@@]3(CO[C@@H]3C[C@H](O)[C@@]2(C)C(=O)[C@H](OC(=O)C)C4=C(C)[C@H](C[C@]1(O)C4(C)C)OC(=O)[C@H](O)[C@@H](NC(=O)c5ccccc5)c6ccccc6)OC(=O)C. Format: Neat. Alfa Chemistry Analytical Products 4
2-Debenzoylpaclitaxel-2-pentenoate 2-Debenzoylpaclitaxel-2-pentenoate is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: (4S,4aS,6R,9S,11S,12S,12aR,12bS)-9-(((2R,3S)-3-Benzamido-2-hydroxy-3-phenylpropanoyl)oxy)-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-(((E)-pent-2-enoyl)oxy)-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate. Molecular formula: C45H53NO14. Mole weight: 831.91. BOC Sciences 4
2-Debenzoyl Paclitaxel 2-Pentenoate 2-Debenzoyl Paclitaxel 2-Pentenoate is an impurity of Paclitaxel, which is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Molecular formula: C45H53NO14. Mole weight: 831.90. BOC Sciences 4
2-Desbenzoyl-2-pentonyl Docetaxel 2-Desbenzoyl-2-pentonyl Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: (2α,5β,7β,10β,13α)-4-Acetoxy-1,7,10-trihydroxy-13-{[(2R,3S)-2-hydroxy-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)-3-phenylpropanoyl]oxy}-9-oxo-5,20-epoxytax-11-en-2-yl valerate; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-12-[(1-oxopentyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-. Molecular formula: C41H57NO14. Mole weight: 787.89. BOC Sciences 4
2'-O-Methyl Paclitaxel 2'-O-Methyl Paclitaxel. Uses: For analytical and research use. Group: Impurity standards. Catalog: APS00363. Format: Neat. Alfa Chemistry Analytical Products 4
2’-O-tert-Butyl(dimethyl)silyl-7-O-triethylsilyl-2-debenzoyl-4-desacetyl Paclitaxel 2’-O-tert-Butyl(dimethyl)silyl-7-O-triethylsilyl-2-debenzoyl-4-desacetyl Paclitaxel is an intermediate in the synthesis of Paclitaxel (P132500) related compound. Paclitaxel - In House Impurity. Group: Biochemicals. Grades: Highly Purified. CAS No. 160768-75-2. Pack Sizes: 1mg, 10mg. Molecular Formula: C50H73NO12Si2. US Biological Life Sciences. USBiological 10
Worldwide
2'-Oxo Docetaxel 2'-Oxo Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Molecular formula: C43H51NO14. Mole weight: 805.86. BOC Sciences 4
2’-Oxo Docetaxel 2’-Oxo Docetaxel is an impurity of Docetaxel (D494420), a semisynthetic derivative of Paclitaxel(P132500), an antimitotic agent that promotes the assembly of micro-tubules and inhibits their de-polymerization to free tubulin. An antine oplastic. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg, 5mg. Molecular Formula: C43H51NO14, Molecular Weight: 805.86. US Biological Life Sciences. USBiological 10
Worldwide
2R,3R-Docetaxel 2R,3R-Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: 7,11-Methano-1H-cyclodeca[3,4]benz[1,2-b]oxete Benzenepropanoic Acid Derivative; R-Erythro-taxotere; 3'-epi-docetaxel; 3'(S)-Docetaxel; Paclitaxel Impurity 62; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βR)-; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-, 12b-(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11-trihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2aα,4β,4aβ,6β,9α(αR*,βR*),11α,12α,12aα,12bα]]-. Grade: ≥90%. CAS No. 133577-32-9. Molecular formula: C43H53NO14. Mole weight: 807.88. BOC Sciences 4
(2R,3S)-3-Phenylisoserine ethyl ester (2R,3S)-3-Phenylisoserine ethyl ester is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: (2R,3S)-Ethyl 2,3-diamino-3-phenylpropanoate; Benzenepropanoic acid, β-amino-α-hydroxy-, ethyl ester, (αR,βS)-; Benzenepropanoic acid, β-amino-α-hydroxy-, ethyl ester, [R-(R*,S*)]-; Ethyl (αR,βS)-β-amino-α-hydroxybenzenepropanoate; (2R,3S)-3-Amino-2-hydroxy-3-phenylpropionic acid ethyl ester; (αR,βS)-β-Amino-α-hydroxy-benzenepropanoic Acid Ethyl Ester. Grade: 98.0%. CAS No. 143615-00-3. Molecular formula: C11H15NO3. Mole weight: 209.24. BOC Sciences 2
(2R,3S)-N-tert-butoxycarbonyl-3-Phenylisoserine Methyl Ester An impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: N-Benzoyl-(2R,3S)-3-Amino-2-hydroxy-3-phenyl-propionic acid methyl ester. Grade: 95%. CAS No. 124605-42-1. Molecular formula: C17H17NO4. Mole weight: 299.32. BOC Sciences
(3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone (3R,4S)-3-Hydroxy-4-phenyl-2-azetidinone is one of Paclitaxel intermediate. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: (3R-cis)-3-Hydroxy-4-phenyl-2-azetidinone; Cephalomannine Impurity 6; cis-3-hydroxy-4-phenyl-2-azetidinone; 3alpha-Hydroxy-4alpha-phenylazetidin-2-one. Grade: 98%. CAS No. 132127-34-5. Molecular formula: C9H9NO2. Mole weight: 163.17. BOC Sciences 3
(4R,5R)-3-Benzoyl-2-(4-anisyl)-4-phenyl-5-oxazolidinecarboxylic Acid (4R,5R)-3-Benzoyl-2-(4-anisyl)-4-phenyl-5-oxazolidinecarboxylic Acid is one of Paclitaxel intermediates. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: Cabazitaxel Impurity 21. Grade: 98%. CAS No. 1262147-55-6. Molecular formula: C24H21NO5. Mole weight: 403.43. BOC Sciences 3
6-alpha-Hydroxy Paclitaxel-d5 (deuterated labelled) An impurity of Paclitaxel which is a chemotherapy medicine approved to be used alone or with other drugs. Grade: > 95%. Molecular formula: C47H46NO15D5. Mole weight: 874.96. BOC Sciences 5
7,13-Bisside Chainpacltaxel 7,13-Bisside Chainpacltaxel is a derivative of Paclitaxel, which is a chemotherapy medication used to treat a number of types of cancer. Synonyms: (2α,5β,7β,10β,13α)-4,10-Diacetoxy-7,13-bis{[(2R,3S)-3-(benzoylamino)-2-hydroxy-3-phenylpropanoyl]oxy}-1-hydroxy-9-oxo-5,20-epoxytax-11-en-2-yl benzoate; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxete-4,9-diyl ester, (αR,βS)-; Paclitaxel 7-((αR,βS)-β-(Benzoylamino)-α-hydroxybenzenepropanoate; Paclitaxel Impurity 64. Grade: 98%. CAS No. 376629-82-2. Molecular formula: C63H64N2O17. Mole weight: 1121.19. BOC Sciences 5
7-Acetyl Paclitaxel 7-Acetyl Paclitaxel. Uses: For analytical and research use. Group: Impurity standards. CAS No. 92950-39-5. Molecular formula: C49H53NO15. Mole weight: 895.94. Catalog: APS92950395. SMILES: CC(=O)O[C@H]1C[C@H]2OC[C@@]2(OC(=O)C)[C@H]3[C@H](OC(=O)c4ccccc4)[C@]5(O)C[C@H](OC(=O)[C@H](O)[C@@H](NC(=O)c6ccccc6)c7ccccc7)C(=C([C@@H](OC(=O)C)C(=O)[C@]13C)C5(C)C)C. Format: Neat. Alfa Chemistry Analytical Products 4
7-epi-10-Deacetyl Baccatin III 17-epi-10-Deacetyl Baccatin III is an impurity of Paclitaxel and derivatives. Group: Biochemicals. Alternative Names: (2aR, 4R, 4aS, 6R, 9S, 11S, 12S, 12aR, 12bS)-12b-(Acetyloxy)-12-(benzoyloxy)-1, 2a, 3, 4, 4a, 6, 9, 10, 11, 12, 12a, 12b-dodecahydro-4, 6, 9, 11-tetrahydroxy-4a, 8, 13, 13-tetramethyl-7, 11-methano-5H-cyclodeca[3, 4]benz[1, 2-b]oxet-5-one; 10-Deacetylbaccatin V; 7-Epi-10-deacetylbaccatin III; 7-epi-10-DAB. Grades: Highly Purified. CAS No. 71629-92-0. Pack Sizes: 2.5mg. US Biological Life Sciences. USBiological 2
Worldwide
7-epi-10-Deacetyl-Baccatin III 17-epi-10-Deacetyl Baccatin III is an impurity of Paclitaxel. Synonyms: (2aR,4R,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,6,9,11-tetrahydroxy-4a,8,13,13-tetramethyl-7,11-methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one; 10-Deacetylbaccatin V; 7-Epi-10-deacetylbac. Grade: > 95%. CAS No. 71629-92-0. Molecular formula: C29H36O10. Mole weight: 544.6. BOC Sciences 5
7-Epi 10-Desacetyl Paclitaxel Paclitaxel impurity. Paclitaxel related compound B. Group: Biochemicals. Alternative Names: 10-Deacetyl-7-epi-taxol; 10-Deacetyl-7-epitaxol; 10-Desacetyl-7-epipaclitaxel; 7-Epi-10-deacetyltaxol; 7-epi-10-Deacetyltaxol; Ormosin VI. Grades: Highly Purified. CAS No. 78454-17-8. Pack Sizes: 2.5mg. US Biological Life Sciences. USBiological 2
Worldwide
7-epi-10-Oxo-10-deacetyl Baccatin III 7-epi-10-Oxo-10-deacetyl Baccatin III is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: (2aR,4R,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,9,10,11,12,12a,12b-decahydro-4,9,11-trihydroxy-4a,8,13,13-tetramethyl-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxete-5,6-dione; 10-Deacetyl-10-oxo-baccatin V; 10-Dehydrobaccatin V; Docetaxel Impurity 20; 7-epi-10-oxo-10-DAB. Grade: 97%. CAS No. 151636-94-1. Molecular formula: C29H34O10. Mole weight: 542.57. BOC Sciences 5
7-O-(Triethylsilyl)-2'-O-tert-butyl(dimethyl)silyl-4-desacetyl-2-debenzoyl-[2,4]oxol Paclitaxel 7-O-(Triethylsilyl)-2'-O-tert-butyl(dimethyl)silyl-4-desacetyl-2-debenzoyl-[2,4]oxol Paclitaxel is an impurity of Paclitaxel, which is a chemotherapy medication used to treat a number of types of cancer. Synonyms: (αR,βS)-β-[Benzoylamino]-α-[[(1,1-dimethylethoxy)carbonyl]oxy]-benzenepropanoic Acid (2aS,3R,5S,5aS,7R,10S,12S,12aS,12bR)-2a,7-Bis(acetyloxy)-2a,3,4,5,5a,6,7,10,11,12,12a,12b-dodecahydro-3,12-dihydroxy-5a,9,13,13-tetramethyl-6-oxo-5-[(triethylsilyl)oxy]-8,12-methano-2H-cyclodec[cd]isobenzofuran-10-yl Ester; (2α,5β,7β,10β,13α)-10-Acetoxy-1,4,5-trihydroxy-9-oxo-7-[(triethylsilyl)oxy]-2,20-epoxytax-11-en-13-yl (2R,3S)-3-(benzoylamino)-2-{[dimethyl(2-methyl-2-propanyl)silyl]oxy}-3-phenylpropanoate; Benzenepropanoic acid, β-(benzoylamino)-α-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-, (2aS,3R,5S,5aS,7R,10S,12S,12aS,12bR)-7-(acetyloxy)-2a,3,4,5,5a,6,7,10,11,12,12a,12b-dodecahydro-2a,3,12-trihydroxy-5a,9,13,13-tetramethyl-6-oxo-5-[(triethylsilyl)oxy]-8,12-methano-2H-cyclodec[cd]isobenzofuran-10-yl ester, (αR,βS)-. Molecular formula: C50H73NO12Si2. Mole weight: 936.28. BOC Sciences 5
7-O-(Triethylsilyl)-2’-O-tert-butyl(dimethyl)silyl-4-desacetyl-2-debenzoyl-[2,4]oxol Paclitaxel Impurity of Paclitaxel analog. Group: Biochemicals. Alternative Names: (αR, βS)- β -[Benzoylamino]-α -[[ (1, 1-dimethylethoxy) carbonyl]oxy]-benzenepropanoic Acid (2aS, 3R, 5S, 5aS, 7R, 10S, 12S, 12aS, 12bR) -2a, 7-Bis (acetyloxy) -2a, 3, 4, 5, 5a, 6, 7, 10, 11, 12, 12a, 12b-dodecahydro-3, 12-dihydroxy-5a, 9, 13, 13-tetramethyl-6-oxo-5- [ (triethylsilyl) oxy]-8, 12-methano-2H-cyclodec [cd]isobenzofuran-10-yl Ester. Grades: Highly Purified. Pack Sizes: 5mg. US Biological Life Sciences. USBiological 3
Worldwide
7-O-(Triethylsilyl) Baccatin III 7-O-(Triethylsilyl) Baccatin III is one of Paclitaxel precursors. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: [2aR-(2aα,4β,4aβ,6β,9α,11α,12α,12aα,12bα)]-6,12b-Bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-9,11-dihydroxy-4a,8,13,13-tetramethyl-4-[(triethylsilyl)oxy]-7,11-methano-5H-cyclodeca[3,4]benz[1,2-b]oxet-5-one; 7-(Triethylsilyl)baccatin III; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12-(Benzoyloxy)-9,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-4-((triethylsilyl)oxy)-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate; Paclitaxel Impurity 17; 7-TES-baccatin III. Grade: > 98%. CAS No. 115437-21-3. Molecular formula: C37H52O11Si. Mole weight: 700.89. BOC Sciences 5
7-O-(Triethylsilyl) Paclitaxel 7-O-(Triethylsilyl) Paclitaxel. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Benzenepropanoic acid, ?-(benzoylamino)-?-hydroxy-, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4a,8,13,13-tetramethyl-5-oxo-4-[(triethylsilyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2a?,4?,4a?,6?,9?(?R*,?S*),11?,12?,12a?,12b?]]-, 7-O-(Triethylsilyl)taxol, Paclitaxel Imp K (EP),Benzenepropanoic acid, ?-(benzoylamino)-?-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4a,8,13,13-tetramethyl-5-oxo-4-[(triethylsilyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (?R,?S)-, 7-O-(Triethylsilyl)paclitaxel, 7-(Triethylsilyl)taxol, 7,11-Methano-1H-cyclodeca[3,4]benz[1,2-b]oxete, benzenepropanoic acid deriv. CAS No. 148930-55-6. Molecular formula: C53H65NO14Si. Mole weight: 968.17. Catalog: APS148930556. SMILES: CC[Si](CC)(CC)O[C@H]1C[C@H]2OC[C@@]2(OC(=O)C)[C@H]3[C@H](OC(=O)c4ccccc4)[C@]5(O)C[C@H](OC(=O)[C@H](O)[C@@H](NC(=O)c6ccccc6)c7ccccc7)C(=C([C@@H](OC(=O)C)C(=O)[C@]13C)C5(C)C)C. Format: Neat. Alfa Chemistry Analytical Products 4
7-Oxo Docetaxel 7-Oxo Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Molecular formula: C43H51NO14. Mole weight: 805.86. BOC Sciences 5
8-epi-10-Deacety Baccatin III An impurity of Baccatin III which is a precursor to the anti-cancer drug paclitaxel (Taxol). Synonyms: 92999-93-4; 8-epi-10-Deacetylbaccatin III7,11-Methano-5H-cyclodeca(3,4)benz(1,2-b)oxet-5-one, 12b-(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,6,9,11-tetrahydroxy-4a,8,13,13-tetramethyl-, (2aR-(2aalpha,4beta,4aalpha,6beta,9alpha,11alpha,12alpha,12aalpha,12balpha))-. Grade: > 95%. CAS No. 92999-93-4. Molecular formula: C29H36O10. Mole weight: 544.6. BOC Sciences 5
(αR,βS)-β-[[(1,1-Dimethylethoxy)carbonyl]amino]-α-hydroxy-4-(phenylmethoxy)-benzenepropanoic Acid Ethyl Ester (αR,βS)-β-[[(1,1-Dimethylethoxy)carbonyl]amino]-α-hydroxy-4-(phenylmethoxy)-benzenepropanoic Acid Ethyl Ester is used in the synthesis of Paclitaxel, which is a chemotherapy medication used to treat a number of types of cancer. Uses: Used in the synthesis of paclitaxel metabolite. Synonyms: tert-butyl ((1S,2R)-1-(4-(benzyloxy)phenyl)-2-hydroxy-3-oxohexyl)carbamate; Paclitaxel Impurity 100; Ethyl (2R,3S)-3-[4-(benzyloxy)phenyl]-2-hydroxy-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)propanoate; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-4-(phenylmethoxy)-, ethyl ester, (αR,βS)-. Grade: ≥95%. CAS No. 382596-26-1. Molecular formula: C23H29NO6. Mole weight: 415.48. BOC Sciences 3
Desbenzoyl Docetaxel Desbenzoyl Docetaxel is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: (2α,5β,7β,10β,13α)-4-Acetoxy-1,2,7,10-tetrahydroxy-9-oxo-5,20-epoxytax-11-en-13-yl (2R,3S)-2-hydroxy-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)-3-phenylpropanoate; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-, 12b-(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11,12-tetrahydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, [2aR-[2aα,4β,4aβ,6β,9α(αR*,βS*),11α,12α,12aα,12bα]]-; Benzenepropanoic acid, β-[[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,6,11,12-tetrahydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-. Grade: ≥90%. CAS No. 160972-48-5. Molecular formula: C36H49NO13. Mole weight: 703.77. BOC Sciences 7
Docetaxel EP Impurity A Docetaxel EP Impurity A is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: 2-O-desbenzoyl-2-O-tiglyldocetaxel; 5β,20-epoxy-1,7β,10β-trihydroxy-9-oxotax-11-ene-2α,4,13α-triyl 4-acetate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate] 2-[(2E)-2-methylbut-2-enoate]. CAS No. 1887057-05-7. Molecular formula: C41H55NO14. Mole weight: 785.87. BOC Sciences 7
Docetaxel EP Impurity C Docetaxel EP Impurity C is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: 4-epi-Docetaxel (USP); 4-Epidocetaxel; 7-Epidocetaxel; 7-Epitaxotere; 5β,20-epoxy-1,7α,10β-trihydroxy-9-oxotax-11-ene-2α,4,13α-triyl 4-acetate 2-benzoate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate]. Grade: >98%. CAS No. 153381-68-1. Molecular formula: C43H53NO14. Mole weight: 807.88. BOC Sciences 7
Docetaxel EP Impurity D Docetaxel EP Impurity D is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: 4-Epi-6-Oxo Docetaxel (USP); 10-Deoxy-10-Oxo-7-epi-Docetaxel; 4-epi-6-Oxodocetaxel; 5β,20-Epoxy-1,7α-dihydroxy-9,10-dioxotax-11-ene-2α,4,13α-triyl 4-acetate 2-benzoate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate]. Grade: >98%. CAS No. 162784-72-7. Molecular formula: C43H51NO14. Mole weight: 805.86. BOC Sciences 7
Docetaxel EP Impurity G Docetaxel EP Impurity G is an impurity of Docetaxel, which is a semisynthetic derivative of Paclitaxel used to treat a variety of cancers, including breast, head and neck, stomach, prostate, and non-small cell lung cancer. Synonyms: 10-Acetyl Docetaxel (EP); Docetaxal; N-Debenzoyl-N-(tert-butoxycarbonyl)taxol; 5β,20-Epoxy-1,7β-dihydroxy-9-oxotax-11-ene-2α,4,10β,13α-tetrayl 4,10-diacetate 2-benzoate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-henylpropanoate]. Grade: > 95%. CAS No. 125354-16-7. Molecular formula: C45H55NO15. Mole weight: 849.94. BOC Sciences 7
Ethyl (2R,3S)-3-(benzoylamino)-2-hydroxybenzenepropanoate Ethyl (2R,3S)-3-(benzoylamino)-2-hydroxybenzenepropanoate is an impurity of Paclitaxel, which is a mitotic inhibitor used in cancer chemotherapy. Synonyms: Paclitaxel Ethyl ester side chain; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, ethyl ester, (αR,βS)-; Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-, ethyl ester, [R-(R*,S*)]-; Ethyl (αR,βS)-β-(benzoylamino)-α-hydroxybenzenepropanoate; (2R,3S)-Ethyl 3-benzamido-2-hydroxy-3-phenylpropanoate; (2R,3S)-N-benzoyl-3-phenylisoserine ethyl ester; (2R,3S)-2-Hydroxy-3-(benzoylamino)-3-phenylpropanoic acid ethyl ester; (αR,βS)-β-(Benzoylamino)-α-hydroxybenzenepropanoic Acid Ethyl Ester. Grade: 98%. CAS No. 153433-80-8. Molecular formula: C18H19NO4. Mole weight: 313.35. BOC Sciences 8
Iso Cephalomannine Iso Cephalomannine is a Cephalomannine isomer as an impurity in Paclitaxel active pharmaceutical ingredient. Paclitaxel impurity A. Group: Biochemicals. Alternative Names: (αR, βS)- β - (Benzoylamino) - α -hydroxy Benzene propanoic Acid (2aR, 4S, 4aS, 6R, 9S, 11S, 12S, 12aR, 12bS)-6, 12b-Bis(acetyloxy)-2a, 3, 4, 4a, 5, 6, 9, 10, 11, 12, 12a, 12b-dodecahydro-4, 11-dihydroxy-4a, 8, 13, 13-tetramethyl-12-[[(2E)-2-methyl-1-oxo-2-buten-1-yl]oxy]-5-oxo-7, 11-methano-1H-cyclodeca[3, 4]benz[1, 2-b]oxet-9-yl Ester; 2-Debenzoyl-2-tigloylpaclitaxel; Isocephalomannine. Grades: Highly Purified. CAS No. 173101-54-7. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
Iso Cephalomannine-d3 Labeled Iso Cephalomannine. Iso Cephalomannine is a Cephalomannine isomer as an impurity in Paclitaxel (P132500) active pharmaceutical ingredient. Paclitaxel impurity A. Group: Biochemicals. Alternative Names: (αR, βS)- β - (Benzoylamino) - α -hydroxy Benzene propanoic Acid (2aR, 4S, 4aS, 6R, 9S, 11S, 12S, 12aR, 12bS)-6, 12b-Bis(acetyloxy)-2a, 3, 4, 4a, 5, 6, 9, 10, 11, 12, 12a, 12b-dodecahydro-4, 11-dihydroxy-4a, 8, 13, 13-tetramethyl-12-[[(2E)-2-methyl-1-oxo-2-buten-1-yl]oxy]-5-oxo-7, 11-methano-1H-cyclodeca[3, 4]benz[1, 2-b]oxet-9-yl-d3 Ester; 2-Debenzoyl-2-tigloylpaclitaxel-d3; Isocephalomannine-d3. Grades: Highly Purified. Pack Sizes: 500ug. US Biological Life Sciences. USBiological 2
Worldwide
N-Benzoyl-(2R,3S)-3-phenylisoserine An impurity of Paclitaxel which is a chemotherapy medication. Synonyms: (2R,3S)-N-Benzoyl-3-phenyl Isoserine; (αR,βS)-β-(Benzoylamino)-α-hydroxybenzenepropanoic Acid; [R-(R*,S*)]-β-(benzoylamino)-α-hydroxybenzenepropanoic Acid; (2R,3S)-3-(Benzoylamino)-2-hydroxy-3-phenylpropionic Acid; (2R,3S)-N-Benzoyl-3-phenylisoserine. Grade: 98%. CAS No. 132201-33-3. Molecular formula: C16H15NO4. Mole weight: 285.3. BOC Sciences
Paclitaxel Paclitaxel is a compound with anti-tumor activity extracted from the Pacific yew tree Taxus brevifolia. Paclitaxel is a microtubule polymer stabilizer with IC50 of 0.1 pM in human endothelial cells. Uses: Adcs cytotoxin. Synonyms: Docetaxel EP Impurity F; BMS 181339-01; BMS181339-01; BMS-181339-01; Taxol A; Abraxane; Paxene; Taxol. Grade: >98%. CAS No. 33069-62-4. Molecular formula: C47H51NO14. Mole weight: 853.91. BOC Sciences 8
Paclitaxel United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standardsapi standardschiral moleculeseuropean pharmacopoeia (ph. eur.)impurity standardspharmaceutical toxicologypharmacopoeial standards. Alternative Names: Paclitaxel, 5beta,20-Epoxy-1,7beta-dihydroxy-9-oxotax-11-ene-2alpha,4,10beta,13alpha-tetrayl 4,10-diacetate 2-benzoate 13-[(2R,3S)-3-(benzoylamino)-2-hydroxy-3-phenylpropanoate], Taxol. Alfa Chemistry Analytical Products
Taxcultine Taxol D is an impurity of Paclitaxel, an antineoplastic. It is used in the study of structure and function of microtubles into tubulin. Paclitaxel is now used to treat patients with lung, ovarian, breast cancer, head and neck cancer, and advanced forms of Kaposi's sarcoma. Paclitaxel is a mitotic inhibitor used in cancer chemotherapy. Synonyms: Baccatin III 13-ester with (2R,3S)-3-butanoylamino-2-hydroxy-3-phenylpropanoic acid; Paclitaxel Propyl analog; Benzenepropanoic acid, α-hydroxy-β-[(1-oxobutyl)amino]-, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester, (αR,βS)-; B. Grade: 98%. CAS No. 153415-46-4. Molecular formula: C44H53NO14. Mole weight: 819.89.… BOC Sciences 9
10-(2,2,2-Trichloroethyloxycarbonyl)-10-deacetylbaccatin III 10-(2,2,2-Trichloroethyloxycarbonyl)-10-deacetylbaccatin III is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Molecular formula: C32H37Cl3O12. Mole weight: 719.99. BOC Sciences 3
10-O-Deacetyl-7-Acetoacetyl Paclitaxel 10-O-Deacetyl-7-Acetoacetyl Paclitaxel is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Molecular formula: C49H53NO15. Mole weight: 895.94. BOC Sciences 3
2',7-Bis-O-{[(2,2,2,-Trichloroethyl)oxy]carbonyl Paclitaxel 2',7-Bis-O-{[(2,2,2,-Trichloroethyl)oxy]carbonyl Paclitaxel is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: 2',7-Bis[(2,2,2-trichloroethoxy)carbonyl]taxol; [2aR-[2aα,4β,4aβ,6β,9α(αR*,βS*),11α,12α,12aα,12bα]]-β-(Benzoylamino)-α-[[(2,2,2-trichloroethoxy)carbonyl]oxy]-benzenepropanoic Acid 6,12b-Bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4a,8,13,13-tetramethyl-5-oxo-4-[[(2,2,2-trichloroethoxy)carbonyl]oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl Ester; 2',7-Bis-O-{[(2,2,2,-Trichloroethyl)oxy]carbonyl Paclitaxel; (5beta,7beta,10beta,13alpha)-4,10-Bis(acetyloxy)-13-{[(2R,3S)-3-benzamido-3-phenyl-2-{[(2,2,2-trichloroethoxy)carbonyl]oxy}propanoyl]oxy}-1-hydroxy-9-oxo-7-{[(2,2,2-trichloroethoxy)carbonyl]oxy}-5,20-epoxytax-11-en-2-yl benzoate. Grade: > 98%. CAS No. 100449-86-3. Molecular formula: C53H53Cl6NO18. Mole weight: 1204.70. BOC Sciences 3
2',7-Bis-O-(Triethylsilyl) 10-Desacetyl Paclitaxel 2',7-Bis-O-(Triethylsilyl) 10-Desacetyl Paclitaxel is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: (αR,βS)-(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-6,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-4-[(triethylsilyl)oxy]-benzenepropanoic Acid β-(Benzoylamino)-α-[(triethylsilyl)oxy]-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl Ester; 2',7-Bis-O-(Triethylsilyl) 10-Desacetyl Paclitaxel; (5beta,7alpha,10beta,13alpha)-4-(Acetyloxy)-13-({(2R,3S)-3-benzamido-3-phenyl-2-[(triethylsilyl)oxy]propanoyl}oxy)-1,10-dihydroxy-9-oxo-7-[(triethylsilyl)oxy]-5,20-epoxytax-11-en-2-yl benzoate. Grade: 95%. CAS No. 155556-72-2. Molecular formula: C57H77NO13Si2. Mole weight: 1040.39. BOC Sciences 3
2-Debenzoyl-2-tigloyl-7-trichloroethoxycarbonyl-baccatin III 2-Debenzoyl-2-tigloyl-7-trichloroethoxycarbonyl-baccatin III is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: 7-Troc-2-debenzoyl-2-pentenate Baccatin-III. Molecular formula: C32H41Cl3O13. Mole weight: 740.02. BOC Sciences 4
2-Debenzoyl-2-tigloyl-baccatin-III 2-Debenzoyl-2-tigloyl-baccatin-III is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: Debenzoyl-2-pentenoate Baccatin-III. Grade: 93%. Molecular formula: C29H40O11. Mole weight: 564.62. BOC Sciences 4
2'-epi-Taxol 2'-epi-Taxol is one of Paclitaxel impurities. Paclitaxel is a tetracyclic diterpenoid isolated originally from the Pacific yew tree Taxus brevifolia. It is a mitotic inhibitor used in cancer chemotherapy. It has a role as a microtubule-stabilising agent, a metabolite, a human metabolite and an antineoplastic agent. Synonyms: [2aR-[2aα,4β,4aβ,6β,9α(αS*,βS*),11α,12α,12aα,12bα]]-β-(Benzoylamino)-α-hydroxy-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl Ester Benzenepropanoic Acid; 2'-epi-Paclitaxel; 2'-epi-Taxol A. CAS No. 179798-21-1. Molecular formula: C47H51NO14. Mole weight: 853.90. BOC Sciences 4

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