Paclitaxel EP Impurity B

Chemical Name: (αR,βS)-α-Hydroxy-β-[[(2E)-2-methyl-1-oxo-2-buten-1-yl]amino]benzenepropanoic Acid (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; NSC 318735; Taxol B; USP Paclitaxel Related Compound A;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]]- Benzenepropanoic acid, α-hydroxy-β-[[(2E)-2-methyl-1-oxo-2-butenyl]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)- (9CI); 7,11-Methano-1H-cyclodeca[3,4]benz[1,2-b]oxete, benzenepropanoic acid deriv.; Cephalomannine; Taxol B

Synonym: 4-(1-nitrosohydrazinyl)benzenesulfonamide