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4,5,7-Tri-O-acetyl-2,6-anhydro-3-deoxy-D-arabino-hept-2-enononitrile is a highly intricate and multifaceted biomedical compound, utilized extensively for the purpose of studying a myriad of complex ailments. It astonishingly excels in tackling the insurmountable challenge posed by drug-resistant bacterial strains, while simultaneously showcasing immense potential in stymieing the proliferation of select malignant cells associated with cancer.
4,5,7-Tri-O-acetyl-2,6-anhydro-3-deoxy-D-lyxo-hept-2-enonamide is a complex and highly intricate biomedical compound, astoundingly utilized for the research of diverse ailments such as cancer. Synonyms: [(2R,3R,4R)-3,4-diacetyloxy-6-carbamoyl-3,4-dihydro-2H-pyran-2-yl]methyl acetate; D-lyxo-Hept-2-enonamide, 2,6-anhydro-3-deoxy-, 4,5,7-triacetate. CAS No. 183233-11-6. Molecular formula: C13H17NO8. Mole weight: 315.28.
4,5,7-Tri-O-acetyl-2,6-anhydro-3-deoxy-D-lyxo-hept-2-enononitrile is an indispensable compound in the realm of biomedical sciences assuming a paramount role in the development of pharmaceutics directed towards precise maladies. Synonyms: [(2R,3R,4R)-3,4-diacetyloxy-6-cyano-3,4-dihydro-2H-pyran-2-yl]methyl acetate; 120085-63-4; ZINC04204376; DTXSID60370473; AKOS004903235. CAS No. 120085-63-4. Molecular formula: C13H17NO7. Mole weight: 299.28.
4,5',8-Trimethylpsoralen
4,5',8-Trimethylpsoralen. Group: Biochemicals. Alternative Names: Trioxsalen; 2,5,9-Trimethyl-furo[3,2-g]benzopyran-7-one. Grades: Highly Purified. CAS No. 3902-71-4. Pack Sizes: 2g, 5g, 10g, 25g. US Biological Life Sciences.
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4,5',8-Trimethylpsoralen 99+% (HPLC)
4,5',8-Trimethylpsoralen 99+% (HPLC). Group: Biochemicals. Grades: Reagent Grade. Pack Sizes: 250mg, 1g, 5g, 25g. US Biological Life Sciences.
The enzyme is involved in the bacterial degradation of the steroid ring structure, and is involved in degradation of multiple steroids, such as testosterone, cholesterol, and sitosterol. Group: Enzymes. Synonyms: tesD (gene name); hsaD (gene name). Enzyme Commission Number: EC 3.7.1.17. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-4724; 4,5:9,10-diseco-3-hydroxy-5,9,17-trioxoandrosta-1(10),2-diene-4-oate hydrolase; EC 3.7.1.17; tesD (gene name); hsaD (gene name). Cat No: EXWM-4724.
4,5,9,10-Tetrahydropyrene (purified by sublimation)
4,5,9,10-Tetrahydropyrene (purified by sublimation). Group: other material building blockssmall molecule semiconductor building blocks. CAS No. 781-17-9. Product ID: 4,5,9,10-tetrahydropyrene. Molecular formula: 206.28g/mol. Mole weight: C16H14. C1CC2=C3C(=CC=C2)CCC4=CC=CC1=C43. InChI=1S / C16H14 / c1-3-11-7-9-13-5-2-6-14-10-8-12 (4-1) 15 (11) 16 (13) 14 / h1-6H, 7-10H2. XDFUNRTWHPWCKO-UHFFFAOYSA-N.
4,5a-Dihydro norethandrolone
4,5a-Dihydro norethandrolone. Group: Biochemicals. Alternative Names: (5a,17a)-17-Hydroxy-19-norpregnan-3-one; 17-Hydroxy-19-Nor-5a,17a-pregnan-3-one. Grades: Highly Purified. CAS No. 2099-68-5. Pack Sizes: 2mg, 5mg, 10mg, 25mg, 50mg. Molecular Formula: C20H32O2. US Biological Life Sciences.
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4,5a-Dihydronorethisterone
4,5a-Dihydronorethisterone. Group: Biochemicals. Alternative Names: 17a-Ethynyl-17b-hydroxy-5a-estran-3-one; 17a-Ethynyl-5a-estran-17b-ol-3-one; 17b-Hydroxy-17a-ethynyl-5a-estran-3-one. Grades: Highly Purified. CAS No. 52-79-9. Pack Sizes: 5mg, 10mg, 25mg, 50mg, 100mg. Molecular Formula: C20H28O2. US Biological Life Sciences.
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4,5α-Dihydronorethisterone
4,5α-Dihydronorethisterone is a derivative of Norethandrolone, which is an androgen and anabolic steroid (AAS) medication used to promote muscle growth and to treat severe burns, physical trauma, and aplastic anemia. Synonyms: 17α-Ethynyl-17β-hydroxy-5α-estran-3-one; 17α-Ethynyl-5α-estran-17β-ol-3-one; 17β-Hydroxy-17α-ethynyl-5α-estran-3-one; 17β-Hydroxy-19-nor-5α,17α-pregn-20-yn-3-one; 5α-Dihydronorethindrone; 5α-Dihydronorethisterone; NSC 85401; STS 737. Grades: 98%. CAS No. 52-79-9. Molecular formula: C20H28O2. Mole weight: 300.43.
4,5α-Dihydronorethisterone
Derivative of the synthetic anabolic steroid Norethandrolone. Group: Biochemicals. Alternative Names: 17α-Ethynyl-17 β-hydroxy-5α-estran-3-one; 17α-Ethynyl-5α-estran-17 β-ol-3-one; 17 β-Hydroxy-17α-ethynyl-5α-estran-3-one; 17 β-Hydroxy-19-nor-5α,17α-pregn-20-yn-3-one; 5α-Dihydronorethindrone; 5α-Dihydronorethisterone; NSC 85401; STS 737. Grades: Highly Purified. CAS No. 52-79-9. Pack Sizes: 25mg. US Biological Life Sciences.
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4(5)-Amino-1H-imidazole-5(4)-carbonitrile
4(5)-Amino-1H-imidazole-5(4)-carbonitrile. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1g. US Biological Life Sciences.
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4-(5-Amino-benzooxazol-2-yl)-phenol
4-(5-Amino-benzooxazol-2-yl)-phenol. Uses: Designed for use in research and industrial production. Additional or Alternative Names: AKOS BB-8620;4-(5-AMINO-BENZOOXAZOL-2-YL)-PHENOL;4-(5-AMINO-1,3-BENZOXAZOL-2-YL)PHENOL;ART-CHEM-BB B025606;ASISCHEM B52703;ZERENEX ZX008653. Product Category: Heterocyclic Organic Compound. CAS No. 54995-54-9. Molecular formula: C13H10N2O2. Mole weight: 226.23. Product ID: ACM54995549. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-AMINO-ISOXAZOL-3-YL)-PHENOL
4-(5-AMINO-ISOXAZOL-3-YL)-PHENOL. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-(5-AMINO-ISOXAZOL-3-YL)-PHENOL. Product Category: Heterocyclic Organic Compound. CAS No. 887591-61-9. Molecular formula: C9H8N2O2. Mole weight: 176.17. Product ID: ACM887591619. Alfa Chemistry ISO 9001:2015 Certified. Categories: 4-(5-AMINO-1,2-OXAZOL-3-YL)PHENOL.
4-[(5-aminopentyl)amino]-2-(2,6-dioxopiperidin-3-yl)-2,3-dihydro-1H-isoindole-1,3-dione. Uses: Designed for use in research and industrial production. Additional or Alternative Names: Thalidomide-NH-C5-NH2 (hydrochloride). Product Category: PROTAC Library. CAS No. 2093386-39-9. Molecular formula: C18H22N4O4. Mole weight: 358.3917. IUPACName: 4-(5-aminopentylamino)-2-(2,6-dioxopiperidin-3-yl)isoindole-1,3-dione;hydrochloride. Product ID: PR2093386399. Alfa Chemistry ISO 9001:2015 Certified.
4,5b-Dihydro norethandrolone
4,5b-Dihydro norethandrolone. Group: Biochemicals. Alternative Names: (5b,17a)-17-Hydroxy-19-norpregnan-3-one; 17-Hydroxy-19-Nor-5b,17a-pregnan-3-one. Grades: Highly Purified. CAS No. 31658-44-3. Pack Sizes: 2mg, 5mg, 10mg, 25mg, 50mg. Molecular Formula: C20H32O2. US Biological Life Sciences.
Worldwide
4,5β-Dihydro norethandrolone
4,5β-Dihydro norethandrolone. Uses: Designed for use in research and industrial production. Additional or Alternative Names: (5β,17α)-17-Hydroxy-19-norpregnan-3-one; 17-Hydroxy-. Product Category: Heterocyclic Organic Compound. CAS No. 31658-44-3. Molecular formula: C20H32O2. Mole weight: 304.47. Purity: 0.96. IUPACName: (5R,8R,9R,10S,13S,14S,17S)-17-ethyl-17-hydroxy-13-methyl-1,2,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-3-one. Canonical SMILES: CCC1(CCC2C1(CCC3C2CCC4C3CCC(=O)C4)C)O. Product ID: ACM31658443. Alfa Chemistry ISO 9001:2015 Certified. Categories: 4,5α-dihydro-norethandrolone.
4- (5- (Bis (2- (benzyloxy) ethyl) amino) -1-methyl-1H-benzo[d]imidazol-2-yl) butanoic Acid is an intermediate in the synthesis of Bendamustine (B132500), an anticancer drug. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 50mg. US Biological Life Sciences.
4- (5- (Bis (2- (benzyloxy) ethyl) amino) -1-methyl-1H-benzo[d]imidazol-2-yl) butanoic Acid tert-Butyl Ester is a protected intermediate in the synthesis of Bendamustine (B132500), an anticancer drug. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 25mg. US Biological Life Sciences.
4,5-Bis(2'-cyanoethylthio)-1,3-dithiole-2-one. CAS No. 132765-35-6. Product ID: 1-01258. Purity: 0.97.
4,5-Bis(2-cyanoethylthio)-1,3-dithiole-2-thione
4,5-Bis(2-cyanoethylthio)-1,3-dithiole-2-thione. Group: Charge transfer complexesligands for functional metal complexesmolecular conductors. CAS No. 132765-35-6. Product ID: 3-[[5-(2-cyanoethylsulfanyl)-2-sulfanylidene-1,3-dithiol-4-yl]sulfanyl]propanenitrile. Molecular formula: 304.48. Mole weight: C9H8N2S5. C(CSC1=C(SC(=S)S1)SCCC#N)C#N. InChI=1S/C9H8N2S5/c10-3-1-5-13-7-8 (14-6-2-4-11)16-9 (12)15-7/h1-2, 5-6H2. DRMGXZWMQXEMKB-UHFFFAOYSA-N. >98.0%(HPLC)(N).
4,5-Bis(2'-cyanoethylthio)-1,3-dithiole-2-thione
4,5-Bis(2'-cyanoethylthio)-1,3-dithiole-2-thione. CAS No. 68494-08-6. Product ID: 1-01257. Purity: 0.97.
4,5-Bis(2-hydroxyethoxy)benzene-1,3-disulfonic acid,disodium salt
4,5-Bis(2-hydroxyethoxy)benzene-1,3-disulfonic acid,disodium salt. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4,5-Bis(2-hydroxyethoxy)benzene-1,3-disulfonic acid, disodium salt. Product Category: Heterocyclic Organic Compound. CAS No. 223683-74-7. Molecular formula: C10H12Na2O10S2. Mole weight: 402.30582. Product ID: ACM223683747. Alfa Chemistry ISO 9001:2015 Certified. Categories: SCHEMBL6934631.
4,5-Bis-benzyloxy-3,6-dimethyl-2,beita-dinitrostyrene. Uses: Designed for use in research and industrial production. Additional or Alternative Names: ZINC22001071, AKOS015964962, 4,5-BIS-BENZYLOXY-3,6-DIMETHYL-2,BEITA-DINITROSTYRENE, 97073-51-3. Product Category: Heterocyclic Organic Compound. CAS No. 97073-51-3. Molecular formula: C24H22N2O6. Mole weight: 434.441280 [g/mol]. Purity: 0.96. IUPACName: 1,4-dimethyl-2-nitro-3-[(E)-2-nitroethenyl]-5,6-bis(phenylmethoxy)benzene. Canonical SMILES: CC1=C(C(=C(C(=C1OCC2=CC=CC=C2)OCC3=CC=CC=C3)C)[N+](=O)[O-])C=C[N+](=O)[O-]. Product ID: ACM97073513. Alfa Chemistry ISO 9001:2015 Certified.
4,5-Bis(chloromethyl)-1,3-dioxol-2-one. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1443544-27-1. IUPAC Name: 4,5-bis(chloromethyl)-1,3-dioxol-2-one. Molecular Formula: C5H4Cl2O3. Mole Weight: 182.9896. Catalog: APS1443544271. SMILES: ClCC1=C(CCl)OC(=O)O1. Format: Neat.
4,5-Bis(chloromethyl)-1,3-dioxol-2-one
4,5-Bis(chloromethyl)-1,3-dioxol-2-one is an impurity of Olmesartan Medoxomil, which is an angiotensin II receptor antagonist. Used as an anti-hypertensive. Group: Biochemicals. Grades: Highly Purified. CAS No. 1443544-27-1. Pack Sizes: 100mg, 250mg, 500mg. Molecular Formula: C5H4Cl2O3. US Biological Life Sciences.
4,5-Bis[(E)-but-2-enoxy]imidazolidin-2-one. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4,5-bis[(E)-but-2-enoxy]imidazolidin-2-one. Product Category: Heterocyclic Organic Compound. CAS No. 91216-69-2. Molecular formula: C11H18N2O3. Mole weight: 226.272220 [g/mol]. Purity: 0.96. IUPACName: 4,5-bis[(E)-but-2-enoxy]imidazolidin-2-one. Density: 1.1g/cm³. Product ID: ACM91216692. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-Bromo-2-pyridylazo)-m-phenylene-. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-(5-BROMO-2-PYRIDYLAZO)-M-PHENYLENE-;4-(5-Bromo-2-pyridylazo)-o-phenylenediamine;1-(5-Bromo-2-pyridylazo)-2,4-diaminobenzene, 5-Bromo-PADAB;4-(5-Bromo-2-pyridylazo)-1,3-benzenediamine;4-[(5-Bromopyridin-2-yl)azo]-1,3-benzenediamine;5-Bromo-2-[(2,4-diam. Product Category: Heterocyclic Organic Compound. CAS No. 50768-75-7. Molecular formula: C11H8BrN3**. Mole weight: 262.10532. Product ID: ACM50768757. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-Bromo-3-methylpyridin-2-yl)morpholine
4-(5-Bromo-3-methylpyridin-2-yl)morpholine. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 5-Bromo-3-methyl-2-(morpholino)pyridine;4-(5-Bromo-3-methyl-2-pyridinyl)morpholine. Product Category: Bromine Series. CAS No. 566158-47-2. Molecular formula: C10H13BrN2O. Mole weight: 257.13. Density: 1.441. Product ID: ACM566158472. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-BROMO-3-NITRO-PYRIDIN-2-YL)-MORPHOLINE
4-(5-BROMO-3-NITRO-PYRIDIN-2-YL)-MORPHOLINE. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-(5-bromo-3-nitropyridin-2-yl)morpholine, 505052-64-2, BD229883, AC1MJYTD, BAS 03148563, ACMC-1AVP6, SureCN2713437, CTK4J2700, MolPort-001-909-791, ANW-31021, ZINC19913947, AKOS000539009, AG-F-69835, AK-91468, KB-34573, 4-(5-Bromo-3-nitropyridin-2-yl)morpholine,, 4-(5-Bromo-3-nitro-pyridin-2-yl)-morpholine, A-5743, 4-(5-BROMO-3-NITRO(PYRIDIN-2-YL))MORPHOLINE, I14-24951. Product Category: Heterocyclic Organic Compound. CAS No. 505052-64-2. Molecular formula: C9H10BrN3O3. Mole weight: 288.098. Purity: 0.98. IUPACName: 4-(5-bromo-3-nitropyridin-2-yl)morpholine. Canonical SMILES: C1COCCN1C2=NC=C(C=C2[N+](=O)[O-])Br. Product ID: ACM505052642. Alfa Chemistry ISO 9001:2015 Certified.
Intermediate in the preparation of HIV replication inhibitors. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 5mg. US Biological Life Sciences.
4-(5-Bromo-4,6-dichloropyrimidin-2-ylamino)benzonitrile. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-(5-Bromo-4,6-dichloropyrimidin-2-ylamino)benzonitrile;4-[(5-Bromo-4,6-dichloro-2-pyrimidinyl)amino]-benzonitrile. Product Category: Heterocyclic Organic Compound. CAS No. 269055-75-6. Molecular formula: C11H5BrCl2N4. Mole weight: 343.99. Purity: 0.96. IUPACName: 4-[(5-bromo-4,6-dichloropyrimidin-2-yl)amino]benzonitrile. Canonical SMILES: C1=CC(=CC=C1C#N)NC2=NC(=C(C(=N2)Cl)Br)Cl. Density: 1.823g/cm³. Product ID: ACM269055756. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-Bromo-4-methyl-2-pyridinyl)morpholine
4-(5-Bromo-4-methyl-2-pyridinyl)morpholine. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 1187385-96-1, 5-Bromo-2-morpholino-4-picoline, 4-(5-bromo-4-methylpyridin-2-yl)morpholine, 4-(5-BROMO-4-METHYL-2-PYRIDINYL)MORPHOLINE, SureCN1460126, CTK4B0845, AKOS015834132, AG-L-20577, AK-75090, KB-42167, BB 0262037, FT-0681413, A-5283, I14-26177. Product Category: Heterocyclic Organic Compound. CAS No. 1187385-96-1. Molecular formula: C10H13BrN2O. Mole weight: 257.14. Purity: 0.98. IUPACName: 4-(5-bromo-4-methylpyridin-2-yl)morpholine. Canonical SMILES: CC1=CC(=NC=C1Br)N2CCOCC2. Product ID: ACM1187385961. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-Bromo-imidazo[1,2-a]pyridin-2-yl)-benzoic acid methyl ester. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-(5-Bromo-imidazo[1,2-a]pyridin-2-yl)-benzoic acid methyl ester. Product Category: Heterocyclic Organic Compound. CAS No. 947533-88-2. Molecular formula: C15H11BrN2O2. Mole weight: 331.16404. Product ID: ACM947533882. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-bromopyridin-2-yl)morpholine
4-(5-bromopyridin-2-yl)morpholine. Uses: Designed for use in research and industrial production. Product Category: Bromine Series. CAS No. 200064-11-5. Molecular formula: C9H11BrN2O. Mole weight: 243.1. Purity: 0.98. Product ID: ACM200064115. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-Bromopyridin-2-yl)morpholine
4-(5-Bromopyridin-2-yl)morpholine. Group: Biochemicals. Alternative Names: N-(5-Bromopyridin-2-yl)morpholine. Grades: Highly Purified. CAS No. 200064-11-5. Pack Sizes: 1g, 2g, 5g, 10g, 25g. Molecular Formula: C9H11BrN2O. US Biological Life Sciences.
Worldwide
4-(5-Bromopyrimidin-2-yloxy)benzenamine
4-(5-Bromopyrimidin-2-yloxy)benzenamine. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 76660-37-2, 4-(5-Bromopyrimidin-2-yloxy)phenylamine, 4-[(5-bromo-2-pyrimidinyl)oxy]aniline, 4-[(5-bromopyrimidin-2-yl)oxy]aniline, SBB054489, AG-H-06098, 4-(5-bromopyrimidin-2-yloxy)benzenamine, 4-(5-bromopyrimidin-2-yl)oxyaniline, PubChem15814, bromopyrimidinyloxyaniline, SureCN11153430, AGN-PC-00DL04, CTK5E3278, ANW-51337, ZINC12336809, AKOS005073484, AG-A-68020, MCULE-8622854600, RP14942, 4-(5-bromanylpyrimidin-2-yl)oxyaniline. Product Category: Bromine Series. CAS No. 76660-37-2. Molecular formula: C10H8BrN3O. Mole weight: 266.09. Purity: 0.96. IUPACName: 4-(5-bromopyrimidin-2-yl)oxyaniline. Canonical SMILES: C1=CC(=CC=C1N)OC2=NC=C(C=N2)Br. Density: 1.613g/cm³. Product ID: ACM76660372. Alfa Chemistry ISO 9001:2015 Certified.
4-[(5-Bromopyrimidin-2-yl)thio]phenylamine
4-[(5-Bromopyrimidin-2-yl)thio]phenylamine. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-[(5-Bromopyrimidin-2-yl)thio]aniline, 849035-61-6, ZINC00154087, AC1MC41Q, Ambpe2006402, SureCN2762479, CTK5F3413, MolPort-000-159-565, 4-(5-bromopyrimidin-2-ylthio)aniline, AKOS009158765, AG-H-39947, QC-5586, 4-[(5-bromo-2-pyrimidinyl)thio]aniline, 4-(5-bromopyrimidin-2-yl)sulfanylaniline, HC210297, KB-87463, 4-(5-bromanylpyrimidin-2-yl)sulfanylaniline, 4-[(5-bromopyrimidin-2-yl)sulfanyl]aniline, 4-[(5-bromopyrimidin-2-yl)thio]phenylamine, FT-0676549. Product Category: Heterocyclic Organic Compound. CAS No. 849235-61-6. Molecular formula: C10H8BrN3S. Mole weight: 282.17. Purity: 0.96. IUPACName: 4-(5-bromopyrimidin-2-yl)sulfanylaniline. Canonical SMILES: C1=CC(=CC=C1N)SC2=NC=C(C=N2)Br. Product ID: ACM849235616. Alfa Chemistry ISO 9001:2015 Certified.
4-(5-Bromothien-2-yl)pyrimidine-2-thiol
4-(5-Bromothien-2-yl)pyrimidine-2-thiol. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 4-(5-Bromo-2-thienyl)pyrimidine-2-thiol, 4-(5-bromothiophen-2-yl)pyrimidine-2-thiol, 175202-82-1, AC1LRVD3, SureCN2198536, STOCK6S-83537, CTK4D5496, CTK8F5409, MolPort-001-769-664, MolPort-019-836-368, STK651759, ZINC05763886, AKOS005091889, AG-A-68008, AG-E-25194, MCULE-9388292259, KB-96940, 4-(5-bromothien-2-yl)pyrimidine-2-thiol, KB-187266, 6-(5-bromothiophen-2-yl)-1H-pyrimidine-2-thione. Product Category: Heterocyclic Organic Compound. CAS No. 175202-82-1. Molecular formula: C8H5BrN2S2. Mole weight: 273.172700 [g/mol]. Purity: 0.96. IUPACName: 6-(5-bromothiophen-2-yl)-1H-pyrimidine-2-thione. Product ID: ACM175202821. Alfa Chemistry ISO 9001:2015 Certified.
An intermediate of Zafirlukast , as leukotriene antagonist. Group: Biochemicals. Grades: Highly Purified. CAS No. 107754-20-1. Pack Sizes: 10mg. US Biological Life Sciences.