Paclitaxel EP Impurity A

Chemical Name: 4,10β-bis(acetyloxy)-13α-[[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy]-1,7β-dihydroxy-9-oxo-5β,20-epoxytax-11-en-2α-yl (2E)-2-methylbut-2-enoate (as per EP) ; (2aR,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-12-{[(E)-2-methylbut-2-enoyl]oxy}-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 (as per USP)

Synonym: 2-O-Debenzoyl-2-O-tigloylpaclitaxel (EP) ; 2-Debenzoyl Paclitaxel 2-Pentenoate (USP) ; Iso Cephalomannine ; Isocephalomannine; Paclitaxel impurity A