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(11Beta,16Alpha,17Alpha)-9-Chloro-17-(2,2-dioxido-5H-1,2-oxathiol-4-yl)-17-[(2-furanylcarbonyl)oxy]-11-hydroxy-16-methyl-androsta-1,4-dien-3-one Mometasone Furoate Impurity B (11Beta,16Alpha,17Alpha)-9-Chloro-17-(2,2-dioxido-5H-1,2-oxathiol-4-yl)-17-[(2-furanylcarbonyl)oxy]-11-hydroxy-16-methyl-androsta-1,4-dien-3-one Mometasone Furoate Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (11β,16α,17α)-9-Chloro-17-(2,2-dioxido-5H-1,2-oxathiol-4-yl)-17-[(2-furanylcarbonyl)oxy]-11-hydroxy-16-methylandrosta-1,4-dien-3-one,Androsta-1,4-dien-3-one, 9-chloro-17-(2,2-dioxido-5H-1,2-oxathiol-4-yl)-17-[(2-furanylcarbonyl)oxy]-11-hydroxy-16-methyl-, (11β,16α,17α)-, Mometasone Furoate Imp. B (EP). CAS No. 223776-49-6. Pack Sizes: 10MG. IUPAC Name: [(8S,9R,10S,11S,13S,14S,16R,17R)-9-chloro-17-(2,2-dioxo-5H-oxathiol-4-yl)-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl] furan-2-carboxylate. Molecular Formula: C28H31ClO8S. Mole Weight: 563.06. Catalog: APS223776496A. SMILES: C[C@@H]1C[C@H]2[C@@H]3CCC4=CC (=O)C=C[C@]4 (C)[C@@]3 (Cl)[C@@H] (O)C[C@]2 (C)[C@@]1 (OC (=O)c5occc5)C6=CS (=O) (=O)OC6. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products
1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7) (Zoledronic Acid Impurity) 1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7) (Zoledronic Acid Impurity). Uses: For analytical and research use. Group: Impurity standards. Pack Sizes: 1MG. Catalog: APS003890. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products
1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7). (Zoledronic Acid Impurity) 1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg, 2.5mg. Molecular Formula: C7H9N2Na7O14P4. US Biological Life Sciences. USBiological 9
Worldwide
1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7)(Zoledronic Acid Impurity) 1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7)(Zoledronic Acid Impurity). Uses: For analytical and research use. Group: Impurity standards. Catalog: APS00180. Format: Neat. Alfa Chemistry Analytical Products
13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one (Levo Norgestrel Impurity) EP Levonorgestrel impurity B. Group: Biochemicals. Alternative Names: 13-Ethyl-17α-ethynyl-17-hydroxygon-5(10)-en-3-one; EP Levonorgestrel Impurity B; (17α)-13-Ethyl-17-hydroxy-18,19-dinorpregn-5(10)-en-20-yn-3-one. Grades: Highly Purified. CAS No. 19914-67-1. Pack Sizes: 5mg. US Biological Life Sciences. USBiological 2
Worldwide
13-Ethyl-17-hydroxy-18,19-dinor-17a-pregn-5(10)-en-20-yn-3-one(levo norgestrel impurity) 13-Ethyl-17-hydroxy-18,19-dinor-17a-pregn-5(10)-en-20-yn-3-one(levo norgestrel impurity). Group: Biochemicals. Alternative Names: 13-Ethyl-17a-ethynyl-17-hydroxygon-5(10)-en-3-one; EP levonorgestrel impurity B; (17a)-13-Ethyl-17-hydroxy-18,19-dinorpregn-5(10)-en-20-yn-3-one. Grades: Highly Purified. CAS No. 19914-67-1. Pack Sizes: 1mg, 2mg, 5mg, 10mg. Molecular Formula: C21H28O2. US Biological Life Sciences. USBiological 7
Worldwide
1-[4-[4- (2, 3-Dichlorophenyl) piperazin-1-yl]butyl-7-hydroxy-3, 4-dihydro Carbostyril (Aripiprazole Impurity) This compound is an impurity in the synthesis of Aripiprazole (A771000) which is a selective dopamine D2-receptor antagonist with dopamine autoreceptor agonist activity. Group: Biochemicals. Grades: Highly Purified. CAS No. 1797983-65-3. Pack Sizes: 1mg. Molecular Formula: C23H27Cl2N3O2. US Biological Life Sciences. USBiological 9
Worldwide
[1-Hydroxy-3-(methylisopentylamino)propylidene] Bisphosphonic Acid Monosodium Salt (Ibandronic Acid Impurity) [1-Hydroxy-3-(methylisopentylamino)propylidene] Bisphosphonic Acid Monosodium Salt (Ibandronic Acid Impurity). Uses: For analytical and research use. Group: Impurity standards. Pack Sizes: 10MG. Catalog: APS003814. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products
1-Hydroxy Ibuprofen (Ibuprofen Impurity L (Mixture of Diastereomers) Degradation product of Ibuprofen. Ibuprofen impurity L. Group: Biochemicals. Alternative Names: 4-(1-Hydroxy-2-methylpropyl)-α-methylbenzeneacetic Acid; 2-[4'- (1-Hydroxy-2-methylpropyl) phenyl]propionic Acid; Ibuprofen Impurity L. Grades: Highly Purified. CAS No. 53949-53-4. Pack Sizes: 5mg. US Biological Life Sciences. USBiological 2
Worldwide
1- (RS) -1-[4-Hydroxy-3- (Hydroxymethylphenyl]-2-[ (4-phenylbutyl) aminoethanol-d3 (Salmeterol EP Impurity) 1- (RS) -1-[4-Hydroxy-3- (Hydroxymethylphenyl]-2-[ (4-phenylbutyl) aminoethanol-d3 (Salmeterol EP Impurity). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. Molecular Formula: C19H22D3NO3, Molecular Weight: 318.43. US Biological Life Sciences. USBiological 3
Worldwide
1- (RS) -1-[4-Hydroxy-3- (Hydroxymethylphenyl]-2-[ (4-phenylbutyl) aminoethanol (Salmeterol EP Impurity) 1- (RS) -1-[4-Hydroxy-3- (Hydroxymethylphenyl]-2-[ (4-phenylbutyl) aminoethanol (Salmeterol EP Impurity). Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 5mg. Molecular Formula: C19H25NO3, Molecular Weight: 315.41. US Biological Life Sciences. USBiological 3
Worldwide
21-Hydroxy Deschloromometasone Furoate (Impurity) Impurity of Mometasone Furoate (Catalog # M4425), a topical corticosteroid used as an anti-inflammatory. Group: Biochemicals. Alternative Names: (11 β,16α)-9-Chloro-17-[(2-furanylcarbonyl)oxy]-11,21-dihydroxy-16-methyl-pregna-1,4-diene-3,20-dione. Grades: Highly Purified. CAS No. 148596-90-1. Pack Sizes: 1mg, 5mg. US Biological Life Sciences. USBiological 3
Worldwide
21-Hydroxy Deschloromometasone Furoate (Impurity) Mometasone Furoate Impurity H 21-Hydroxy Deschloromometasone Furoate (Impurity) Mometasone Furoate Impurity H. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Mometasone Furoate Imp. H (EP),(11beta,16alpha)-9-Chloro-17-[(2-furanylcarbonyl)oxy]-11,21-dihydroxy-16-methylpregna-1,4-diene-3,20-dione, 9-chloro-11beta,21-dihydroxy-16alpha-methyl-3,20-dioxopregna-1,4-dien-17-yl furan-2-carboxylate. CAS No. 148596-90-1. IUPAC Name: [(8S,9R,10S,11S,13S,14S,16R,17R)-9-chloro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl] furan-2-carboxylate. Molecular Formula: C27H31ClO7. Mole Weight: 502.98. Catalog: APS148596901. SMILES: C[C@@H]1C[C@H]2[C@@H]3CCC4=CC (=O)C=C[C@]4 (C)[C@@]3 (Cl)[C@@H] (O)C[C@]2 (C)[C@@]1 (OC (=O)c5occc5)C (=O)CO. Format: Neat. Alfa Chemistry Analytical Products
2-Hydroxy-5-methyl-gamma-phenylbenzenepropanol (tolterodine impurity) 2-Hydroxy-5-methyl-gamma-phenylbenzenepropanol (tolterodine impurity). Group: Biochemicals. Alternative Names: 2-(3-Hydroxy-1-phenylpropyl)-4-methylphenol; 3-(2-Hydroxy-5-methylphenyl)-3-phenylpropanol. Grades: Highly Purified. CAS No. 851789-43-0. Pack Sizes: 100mg, 250mg, 500mg, 1g, 2g. Molecular Formula: C16H18O2. US Biological Life Sciences. USBiological 7
Worldwide
2-Hydroxy-5-methyl-γ-phenylbenzenepropanol (Tolterodine Impurity) Tolterodine impurity. Used in the efficient synthesis of Tolterodine. Group: Biochemicals. Alternative Names: 2-(3-Hydroxy-1-phenylpropyl)-4-methylphenol; 3-(2-Hydroxy-5-methylphenyl)-3-phenylpropanol. Grades: Highly Purified. CAS No. 851789-43-0. Pack Sizes: 250mg. US Biological Life Sciences. USBiological 2
Worldwide
3-[2-Hydroxy-3-[4- (2-methoxyethyl) phenoxy]propoxy]-1-isopropylamino-2-propanol-d7 (Mixture of Diasteromers). (Metoprolol Impurity J) 3-[2-Hydroxy-3-[4- (2-methoxyethyl) phenoxy]propoxy]-1-isopropylamino-2-propanol-d7 (Mixture of Diasteromers) (Metoprolol Impurity J). Group: Biochemicals. Alternative Names: 1-[2-Hydroxy-3-[4- (2-methoxyethyl) phenoxy]propoxy]-3-[ (1-methylethyl) amino]-2-propanol-d7. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
Worldwide
3-[2-Hydroxy-3-[4-(2-methoxyethyl)phenoxy]propoxy]-1-isopropylamino-2-propanol (Mixture of Diasteromers)(Metoprolol Impurity J) 3-[2-Hydroxy-3-[4-(2-methoxyethyl)phenoxy]propoxy]-1-isopropylamino-2-propanol (Mixture of Diasteromers)(Metoprolol Impurity J). Uses: For analytical and research use. Group: Impurity standards. CAS No. 163685-37-8. Pack Sizes: 2.5MG. IUPAC Name: 1-[2-hydroxy-3-[4-(2-methoxyethyl)phenoxy]propoxy]-3-(propan-2-ylamino)propan-2-ol. Molecular Formula: C18H31NO5. Mole Weight: 341.44. Catalog: APS163685378A. SMILES: COCCc1ccc(OCC(O)COCC(O)CNC(C)C)cc1. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products
3-(2-Hydroxy-5-methylphenyl)-3-phenylpropyl Acetate. (Tolterodine Impurity) 3-(2-Hydroxy-5-methylphenyl)-3-phenylpropyl Acetate is an impurity of Tolterodine (T535800), an antimuscarinic agent used to treat patients with overactive bladder. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 100mg, 1g. Molecular Formula: C18H20O3. US Biological Life Sciences. USBiological 10
Worldwide
3β-Hydroxy-AlloProgesterone (AlloProgesterone Impurity 6) 3β-Hydroxy-AlloProgesterone (AlloProgesterone Impurity 6). Uses: For analytical and research use. Group: Impurity standards. CAS No. 566-61-0. Molecular Formula: C21H32O2. Mole Weight: 316.48. Catalog: APB566610. Alfa Chemistry Analytical Products 2
(3R, 3aS, 6aR) -Hexahydrofuro[2, 3-b]furan-3-yl-4- (N- ( (2R, 3S) -3-amino-2-hydroxy-4-phenylbutyl) -N-isobutyl-d9-sulfamoyl) phenylcarbamate (Darunavir-d9 Impurity) Process impurity of Darunavir-d9 synthesis. Group: Biochemicals. Alternative Names: Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
(3R, 3aS, 6aR) -Hexahydrofuro[2, 3-b]furan-3-yl-4- (N- ( (2R, 3S) -3-amino-2-hydroxy-4-phenylbutyl) -N-isobutylsulfamoyl) phenylcarbamate (Darunavir Impurity) Process impurity of Darunavir synthesis. Group: Biochemicals. Alternative Names: Grades: Highly Purified. Pack Sizes: 5mg. US Biological Life Sciences. USBiological 2
Worldwide
4,4'-[(2-Hydroxy-1,3-propanediyl)bis(oxy)]bis-benzeneacetamide (Atenolol Impurity E) 4,4'-[(2-Hydroxy-1,3-propanediyl)bis(oxy)]bis-benzeneacetamide (Atenolol Impurity E). Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 2,2'-[(2-Hydroxypropane-1,3-diyl)bis(oxy-4,1-phenylene)]diacetamide, Atenolol Imp. E (EP). CAS No. 141650-31-9. IUPAC Name: 2-[4-[3-[4-(2-amino-2-oxoethyl)phenoxy]-2-hydroxypropoxy]phenyl]acetamide. Molecular Formula: C19H22N2O5. Mole Weight: 358.39. Catalog: APS141650319. SMILES: NC (=O)Cc1ccc (OCC (O)COc2ccc (CC (=O)N)cc2)cc1. Format: Neat. Alfa Chemistry Analytical Products
4-Hydroxy-Alpha1-[[[6-(1-methyl-3-phenylpropoxy)hexyl]amino]methyl]-1,3-benzenedimethanol (Salmeterol Impurity) 4-Hydroxy-Alpha1-[[[6-(1-methyl-3-phenylpropoxy)hexyl]amino]methyl]-1,3-benzenedimethanol (Salmeterol Impurity). Uses: For analytical and research use. Group: Impurity standards. CAS No. 108928-81-0. Pack Sizes: 2.5MG. IUPAC Name: 2-(hydroxymethyl)-4-[1-hydroxy-2-[6-(4-phenylbutan-2-yloxy)hexylamino]ethyl]phenol. Molecular Formula: C25H37NO4. Mole Weight: 415.57. Catalog: APS108928810. SMILES: CC (CCc1ccccc1)OCCCCCCNCC (O)c2ccc (O)c (CO)c2. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products
4-Hydroxy Methyl Ambrisentan (Ambrisentan Impurity 15) 4-Hydroxy Methyl Ambrisentan (Ambrisentan Impurity 15). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1106685-66-8. Molecular Formula: C22H22N2O5. Mole Weight: 394.43. Catalog: APB1106685668. Alfa Chemistry Analytical Products
4-tert-Butyl-2, 6-dimethyl-3-hydroxyphenylacetamide (oxymetazoline impurity) 4-tert-Butyl-2, 6-dimethyl-3-hydroxyphenylacetamide (oxymetazoline impurity). Group: Biochemicals. Alternative Names: 4- (1, 1-Dimethylethyl) -3-hydroxy-2, 6-dimethyl Benzene acetamide; 2- (4-tert-Butyl-3-hydroxy-2, 6-dimethylphenyl) acetamide. Grades: Highly Purified. CAS No. 55699-13-3. Pack Sizes: 5mg, 10mg, 25mg, 50mg, 100mg. Molecular Formula: C14H21NO2. US Biological Life Sciences. USBiological 6
Worldwide
6-beta-Hydroxy Norethindrone Acetate (Norethindrone Acetate Impurity F) An impurity of Norethindrone, which is an oral contraceptive involved in the inhibition of cytosolic sulfotransferases. Synonyms: (6β,17α)-17-(Acetyloxy)-6-hydroxy-19-norpregn-4-en-20-yn-3-one; 6β,17-Dihydroxy-19-nor-17α-pregn-4-en-20-yn-3-one 17-Acetate. Grades: > 95%. CAS No. 6856-27-5. Molecular formula: C22H28O4. Mole weight: 356.47. BOC Sciences 6
6-beta-Hydroxy Norethindrone (Norethindrone Impurity H) An impurity of Norethindrone, which is an oral contraceptive involved in the inhibition of cytosolic sulfotransferases. Synonyms: 6β-Hydroxy Norethindrone; (6β,17α)-6,17-Dihydroxy-19-norpregn-4-en-20-yn-3-one; 6β,17β-Dihydroxy-17α-ethynylestr-4-en-3-one; 6β,17β-Dihydroxy-19-nor-17α-pregn-4-en-20-yn-3-one; 6β-Hydroxynorethindrone; 6β-Hydroxynorethisterone. Grades: > 95%. CAS No. 51724-44-8. Molecular formula: C20H26O3. Mole weight: 314.45. BOC Sciences 6
Abacavir Impurity (3-Hydroxy Abacavir) Abacavir Impurity (3-Hydroxy Abacavir). Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (2R,4S)-2-(2-amino-6-(cyclopropylamino)-9H-purin-9-yl)-4-(hydroxymethyl)cyclopentanol. Molecular Formula: C14H20N6O2. Mole Weight: 304.35. Catalog: APB03135. Alfa Chemistry Analytical Products 3
Alpha-hydroxy Olopatadine Sodium Salt ( Olopatadine Impurity A) BOC Sciences
Ambrisentan Hydroxy Acid Impurity A metabolite of Ambrisentan. Synonyms: (S)-2-Hydroxy-3-methoxy-3,3-diphenylpropionic Acid. Grades: > 95%. CAS No. 178306-52-0. Molecular formula: C16H16O4. Mole weight: 272.3. BOC Sciences
Ambrisentan Hydroxy Impurity (Ambrisentan Impurity 14) Ambrisentan Hydroxy Impurity (Ambrisentan Impurity 14). Uses: For analytical and research use. Group: Impurity standards. CAS No. 178306-52-0. Molecular Formula: C16H16O4. Mole Weight: 272.3. Catalog: APB178306520. Alfa Chemistry Analytical Products
Clobetasol Impurity (9-Fluoro-11-beta-21-Dihydroxy-16-Methylpregna-1, 4, 16-triene-3, 20-Dione) An impurity of Clobetasol propionate. Clobetasol propionate is a corticosteroid of the glucocorticoid class used to treat various skin disorders including eczema and psoriasis. It is also highly effective for contact dermatitis caused by exposure to poison ivy/oak. Synonyms: MK8RHF5SQO; Pregna-1,4,16-triene-3,20-dione, 9-fluoro-11,21-dihydroxy-16-methyl-, (11beta)-; (8S,9R,10S,11S,13S,14S)-9-fluoro-11-hydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl-7,8,11,12,14,15-hexahydro-6H-cyclopenta[a]phenanthren-3-one; (11beta)-9-Fluoro-11,21-dihydroxy-16-methyl-pregna-1,4,16-triene-3,20-dione; 16delta-Betamethasone; UNII-MK8RHF5SQO; 16.DELTA.-BETAMETHASONE; SCHEMBL20199966; DTXSID90208578; 9-Fluoro-11beta,21-dihydroxy-16-methylpregna-1,4,16-triene-3,20-dione; (11.BETA.)-9-FLUORO-11,21-DIHYDROXY-16-METHYLPREGNA-1,4,16-TRIENE-3,20-DIONE; PREGNA-1,4,16-TRIENE-3,20-DIONE, 9-FLUORO-11,21-DIHYDROXY-16-METHYL-, (11.BETA.); Pregna-1,4,16-triene-3,20-dione, 9-fluoro-11,21-dihydroxy-16-methyl-, (11?)-; (11?)-9-Fluoro-11,21-dihydroxy-16-methylpregna-1,4,16-triene-3,20-dione; 9-Fluoro-11?,21-dihydroxy-16-methylpregna-1,4,16-triene-3,20-dione; 9-Fluoro-11beta,21-dihydroxy-16-methylpregna-1,4,16-triene-3,20-dione. Grades: > 95%. CAS No. 59860-99-0. Molecular formula: C22H27FO4. Mole weight: 374.46. BOC Sciences 7
Dienogest Impurity A (11-beta-Hydroxy Dienogest) A metabolite of Dienogest. Synonyms: (11β,17α)-11,17-Dihydroxy-3-oxo-19-norpregna-4,9-diene-21-nitrile; 11β-Hydroxy-STS 557; 17β-Dihydroxyestra-4,9-dien-3-one 17α-Cyanomethyl-11&beta. Grades: > 95%. CAS No. 86153-39-1. Molecular formula: C20H25NO3. Mole weight: 327.43. BOC Sciences 8
Duloxetine impurity (alpha-hydroxy) Duloxetine impurity. Grades: > 95%. CAS No. 940291-11-2. Molecular formula: C18H19NOS. Mole weight: 297.42. BOC Sciences 7
Ethyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide(piroxicam impurity H) Ethyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide(piroxicam impurity H). Group: Biochemicals. Alternative Names: 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylic acid. Grades: Highly Purified. CAS No. 24683-21-4. Pack Sizes: 2mg, 5mg, 10mg, 25mg, 50mg. Molecular Formula: C11H11NO5S. US Biological Life Sciences. USBiological 7
Worldwide
Evelviren impurity 2 (RAC 8-hydroxy-efeviren) Evelviren impurity 2 (RAC 8-hydroxy-efeviren). Uses: For analytical and research use. Group: Impurity standards. CAS No. 205754-32-1. Molecular Formula: C14H9ClF3NO3. Mole Weight: 331.68. Catalog: APB205754321. Alfa Chemistry Analytical Products 2
Ezetimibe impurity (3-[5-(4-Fluoro-phenyl)-5-(R)-hydroxy-pentanoyl]-4-(R)-phenyl-oxazolidin-2-one) An impurity of Ezetimibe. Ezetimibe inhibits intestinal cholesterol absorption by preventing cholesterol uptake by the Niemann-Pick C1-like 1 (NPC1L38) protein, a cholesterol transporter located in the apical membrane of enterocytes. Synonyms: (4R)-4-Phenyl-3-[(5R)-5-(4-fluorophenyl)-5-hydroxypentanoyl]-1,3-oxazolidin-2-one. Grades: > 95%. Molecular formula: C20H20FNO4. Mole weight: 357.39. BOC Sciences 7
Ezetimibe impurity (3-[5-(4-Fluoro-phenyl)-5-(R)-hydroxy-pentanoyl]-4-(S)-phenyl-oxazolidin-2-one) An impurity of Ezetimibe. Ezetimibe inhibits intestinal cholesterol absorption by preventing cholesterol uptake by the Niemann-Pick C1-like 1 (NPC1L36) protein, a cholesterol transporter located in the apical membrane of enterocytes. Synonyms: (S)-3-((R)-5-(4-fluorophenyl)-5-hydroxypentanoyl)-4-phenyloxazolidin-2-one. Grades: > 95%. CAS No. 528565-93-7. Molecular formula: C20H20FNO4. Mole weight: 357.39. BOC Sciences 7
Ezetimibe impurity (3-[5-(4-Fluoro-phenyl)-5-(S)-hydroxy-pentanoyl]-4-(R)-phenyl-oxazolidin-2-one) An impurity of Ezetimibe. Ezetimibe inhibits intestinal cholesterol absorption by preventing cholesterol uptake by the Niemann-Pick C1-like 1 (NPC1L37) protein, a cholesterol transporter located in the apical membrane of enterocytes. Synonyms: (4R)-4-Phenyl-3-[(5S)-5-(4-fluorophenyl)-5-hydroxypentanoyl]-1,3-oxazolidin-2-one. Grades: > 95%. CAS No. 189028-95-3. Molecular formula: C20H20FNO4. Mole weight: 357.39. BOC Sciences 7
Ezetimibe impurity (3-[5-(4-Fluoro-phenyl)-5-(S)-hydroxy-pentanoyl]-4-(S)-phenyl-oxazolidin-2-one) An impurity of Ezetimibe. Ezetimibe inhibits intestinal cholesterol absorption by preventing cholesterol uptake by the Niemann-Pick C1-like 1 (NPC1L39) protein, a cholesterol transporter located in the apical membrane of enterocytes. Synonyms: (4S)-4-Phenyl-3-[(5S)-5-(4-fluorophenyl)-5-hydroxypentanoyl]-1,3-oxazolidin-2-one. Grades: > 95%. Molecular formula: C20H20FNO4. Mole weight: 357.39. BOC Sciences 7
Fasudil N-Hydroxy Impurity An impurity of Fasudil. Fasudil is Ccyclic nucleotide-dependent protein kinase inhibitor and Rho-associated kinase inhibitor. Synonyms: 5-[(hexahydro-4-hydroxy-1H-1,?4-diazepin-1-yl)?sulfonyl]?- Isoquinoline. Grades: > 95%. CAS No. 1350827-92-7. Molecular formula: C14H17N3O3S. Mole weight: 307.37. BOC Sciences 8
Fluvastatin Hydroxy Diene Impurity Fluvastatin Hydroxy Diene Impurity is an impurity of fluvastatin formulations, a drug used to mitigate hypercholesterolemia and subjugate the perils begotten by cardiovascular afflictions. Grades: > 95%. Molecular formula: C24H23FNO3Na. Mole weight: 415.44. BOC Sciences 8
Glycopyrrolate Impurity (1,1-Dimethyl-3-Hydroxy-pyrrolidinium Bromide) Synonyms: 3-Hydroxy-1,1-dimethylpyrrolidin-1-ium bromide; 51052-74-5; starbld0029835; SCHEMBL20293446. Grades: > 95%. CAS No. 51052-74-5. Molecular formula: C6H14NOBr. Mole weight: 196.08. BOC Sciences 6
Irinotecan Hydroxy Keto Impurity Irinotecan Hydroxy Keto Impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 157770-58-6. Molecular Formula: C21H20N2O3. Mole Weight: 348.4. Catalog: APB157770586. Alfa Chemistry Analytical Products
Levonorgestrel Impurity H (6-beta-Hydroxy Levonorgestrel) Cas No. 55555-97-0. BOC Sciences 6
Levonorgestrel Impurity I (10-beta-Hydroxy Levonorgestrel) Cas No. 21508-50-9. BOC Sciences 6
Lovastatin 6'-beta-Hydroxy Impurity Grades: > 95%. Molecular formula: C24H36O6. Mole weight: 420.55. BOC Sciences 7
Loxoprofen-trans-Hydroxy Impurity Loxoprofen-trans-Hydroxy Impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 88378-21-6. Molecular Formula: C15H20O3. Mole Weight: 248.32. Catalog: APB88378216. Alfa Chemistry Analytical Products 3
Macitentan Hydroxy amine Impurity It is an impurity of Macitentan, a dual orally active endothelin receptor antagonist used for pulmonary arterial hypertension. Synonyms: Ethanol, 2-((6-amino-5-(4-bromophenyl)pyrimidin-4-yl)oxy); 2-((6-amino-5-(4-bromophenyl)pyrimidin-4-yl)oxy)ethan-1-ol. CAS No. 2211059-05-9. Molecular formula: C12H12BrN3O2. Mole weight: 310.15. BOC Sciences 8
Methyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide(piroxicam impurity G) Methyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide(piroxicam impurity G). Group: Biochemicals. Alternative Names: 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylic acid methyl ester 1,1-dioxide; Piroxicam impurity G. Grades: Highly Purified. CAS No. 35511-14-9. Pack Sizes: 500mg, 1g, 2g, 5g, 10g. Molecular Formula: C10H9NO5S. US Biological Life Sciences. USBiological 7
Worldwide
Metronidazole EP Impurity H (Hydroxy Metronidazole) Metronidazole EP Impurity H (Hydroxy Metronidazole). Uses: For analytical and research use. Group: Impurity standards. CAS No. 4812-40-2. Molecular Formula: C6H9N3O4. Mole Weight: 187.16. Catalog: APB4812402. Alfa Chemistry Analytical Products 2
Moxifloxacin Hydroxy Quinoline Impurity An impurity of Moxifloxacin, which is fourth generation antibacterial agent. Synonyms: 1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-hydroxy-4-oxo-3-quinolinecarboxylic Acid; Moxifloxacin 8-Hydroxy Quinolic Acid. Grades: > 95%. CAS No. 154093-72-8. Molecular formula: C13H9F2NO4. Mole weight: 281.22. BOC Sciences 7
Olmesartan Impurity (Ethyl 4-(1-Hydroxy-1-methylethyl)-2- Propyl-Imidazole-5-Carboxylate) A metabolite of Olmesartan, which is a specific angiotensin II type 1 (AT1) receptor antagonist with antihypertensive effect. hAT1 receptors: IC50=6.11 nM. Synonyms: 4-(1-Hydroxy-1-methylethyl)-2-propyl-1H-imidazole-5-carboxylic Acid Ethyl Ester; 2-Propyl-5-(1-hydroxy-1-methylethyl)-3H-imidazole-4-carboxylic Acid Ethyl Ester; Ethyl 4-(1-Hydroxy-1-methylethyl)-2-propyl-1H-imidazole-5-carboxylate. Grades: > 95%. CAS No. 144689-93-0. Molecular formula: C12H20N2O3. Mole weight: 240.3. BOC Sciences 7
Ortho-Hydroxy Atorvastatin Calcium Salt (Atorvastatin Impurity 13) Ortho-Hydroxy Atorvastatin Calcium Salt (Atorvastatin Impurity 13). Uses: For analytical and research use. Group: Impurity standards. CAS No. 1046118-41-5. Molecular Formula: C66H68CaF2N4O12. Mole Weight: 1187.36. Catalog: APB1046118415. Alfa Chemistry Analytical Products
Paromamine 6-Hydroxy Impurity Paromamine 6-Hydroxy Impurity. Uses: For analytical and research use. Group: Impurity standards. Molecular Formula: C12H25N3O8. Mole Weight: 339.35. Catalog: APB09485. Alfa Chemistry Analytical Products 4
Pitavastatin 8’-Hydroxy Impurity BOC Sciences 7
Prasugrel alpha-Hydroxy Impurity A synthetic intermediate of Prasugrel. Prasugrel is a platelet inhibitor. It can be used to prevent formation of blood clots. Synonyms: 1-Cyclopropyl-2-(2-fluorophenyl)-2-hydroxy-ethanone. Grades: > 95%. CAS No. 1100905-45-0. Molecular formula: C11H11FO2. Mole weight: 194.21. BOC Sciences 7
Progesterone 20-Hydroxy Impurity Progesterone 20-Hydroxy Impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 151122-70-2. Molecular Formula: C22H32O3. Mole Weight: 344.49. Catalog: APB151122702. Alfa Chemistry Analytical Products
Progesterone 20-Hydroxy Impurity (Pregn-4-ene-20-Carboxaldehyde) An impurities of Progesterone.Progesterone is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. Progesterone is also a crucial metabolic intermediate in the production of other endogenous steroids, including the sex hormones and the corticosteroids, and plays an important role in brain function as a neurosteroid. Grades: > 95%. CAS No. 151122-70-2. Molecular formula: C22H32O3. Mole weight: 344.5. BOC Sciences 7
Progesterone 6-alfa-Hydroxy Impurity A metabolite of Progesterone.Progesterone is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. Progesterone is also a crucial metabolic intermediate in the production of other endogenous steroids, including the sex hormones and the corticosteroids, and plays an important role in brain function as a neurosteroid. Synonyms: (6α)-6-Hydroxypregn-4-ene-3,20-dione; 6α-Hydroxypregn-4-ene-3,20-dione; 6α-Hydroxyprogesterone. Grades: > 95%. CAS No. 604-20-6. Molecular formula: C21H30O3. Mole weight: 330.47. BOC Sciences
Progesterone 6-beta-Hydroxy Impurity A metabolite of Progesterone.Progesterone is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. Progesterone is also a crucial metabolic intermediate in the production of other endogenous steroids, including the sex hormones and the corticosteroids, and plays an important role in brain function as a neurosteroid. Synonyms: (6β)-6-Hydroxypregn-4-ene-3,20-dione; 4-Pregnen-6β-ol-3,20-dione; 6β-Hydroxypregn-4-en-3,20-dione; 6β-Hydroxypregn-4-ene-3,20-dione; 6β-Hydroxyprogesterone; U 27605. Grades: > 95%. CAS No. 604-19-3. Molecular formula: C21H30O3. Mole weight: 330.47. BOC Sciences 7
Progesterone EP Impurity B (20(S)-Hydroxy Progesterone) Cas No. 145-14-2. BOC Sciences 7
Progesterone EP Impurity C (20(R)-Hydroxy Progesterone) Cas No. 145-15-3. BOC Sciences 7
Propiverine Hydroxy Impurity An impurity of Propiverine Propiverine. Propiverine is a muscarinic antagonist. It is an anticholinergic drug used for the treatment of urinary urgency, frequency and urge incontinence. Uses: Calcium channel blockers. Synonyms: Enpiperate; 3608-67-1; 1-methylpiperidin-4-yl 2-hydroxy-2,2-diphenylacetate; 1-Methyl-4-piperidyl diphenylglycolate; 4-NMPB; [3H]4NMPB; N-Methyl-4-piperidyl benzilate; 1-Methyl-4-piperidyl benzilate; NSC 172167; CHEMBL143228; QWK86805EB; N-methyl-4-piperidinyl benzilate; NSC-172167; Benzeneacetic acid. alpha.-hydroxy-.alpha.-phenyl-, 1-methyl-4-piperidinyl ester; Hydroxy-diphenyl-acetic acid 1-methyl-piperidin-4-yl ester; [3H]enpiperate. Grades: > 95%. CAS No. 3608-67-1. Molecular formula: C20H23NO3. Mole weight: 325.41. BOC Sciences 7
Prucalopride Hydroxy Impurity An impurity of Prucalopride. Prucalopride is a selective, high affinity 5-HT4 receptor agonist. It has been tested for the treatment of chronic intestinal pseudo-obstruction. Grades: > 95%. Molecular formula: C18H26ClN3O4. Mole weight: 383.88. BOC Sciences 7
Quetiapine Hydroxy Impurity-d8 Dihydrochloride Quetiapine Hydroxy Impurity-d8 Dihydrochloride. Uses: For analytical and research use. Group: Impurity standards. Catalog: APS002857. Format: Neat. Alfa Chemistry Analytical Products
Quetiapine Hydroxy Impurity Dihydrochloride Salt An impurity of Quetiapine. Group: Biochemicals. Alternative Names: 4-Dibenzo[b, f][1, 4]thiazepin-11-yl-1-piperazineethanol Hydrochloride. Grades: Highly Purified. CAS No. 329218-14-6. Pack Sizes: 2.5mg. US Biological Life Sciences. USBiological 2
Worldwide
Quetiapine Hydroxy Impurity Dihydrochloride Salt Quetiapine Hydroxy Impurity Dihydrochloride Salt. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Quetiapine Hydroxy Impurity Dihydrochloride Salt, 1-Piperazineethanol, 4-dibenzo[b,f][1,4]thiazepin-11-yl-, dihydrochloride (9CI),1-Piperazineethanol, 4-dibenzo[b,f][1,4]thiazepin-11-yl-, hydrochloride (1:2), 2-[4-(Dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl]ethanol dihydrochloride. CAS No. 329218-14-6. IUPAC Name: 2-(4-benzo[b][1,4]benzothiazepin-6-ylpiperazin-1-yl)ethanol;dihydrochloride. Molecular Formula: C19H21N3OS.2ClH. Mole Weight: 412.38. Catalog: APS329218146. SMILES: Cl. Cl. OCCN1CCN(CC1)C2=Nc3ccccc3Sc4ccccc24. Format: Neat. Alfa Chemistry Analytical Products
Quetiapine Impurity I (Quetiapine Hydroxy Impurity) An impurity of Quetiapine. Quetiapine is an atypical antipsychotic used for the treatment of schizophrenia, bipolar disorder, and major depressive disorder. Grades: > 95%. CAS No. 329216-67-3. Molecular formula: C19H21N3OS. Mole weight: 339.46. BOC Sciences 6
Ribostamycin 2-Hydroxy Impurity Ribostamycin 2-Hydroxy Impurity. Uses: For analytical and research use. Group: Impurity standards. Molecular Formula: C17H33N3O11. Mole Weight: 455.46. Catalog: APB09592. Alfa Chemistry Analytical Products 4

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