Paclitaxel EP Impurity M

Chemical Name: 5α,10β-bis(acetyloxy)-13α-[[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy]-1,2α,4,7β-tetrahydroxy-9-oxotax-11-en-20-yl benzoate (as per EP) ; (1S,3S,4S,4aR,5S,6S,8S,11R,12aS)-8-{[(2R,3S)-3-Benzamido-2-hydroxy-3-phenylpropanoyl]oxy}-4-[(benzoyloxy)methyl]-1,4,5,6-tetrahydroxy-9,12a,13,13-tetramethyl-12-oxo-1,2,3,4,4a,5,6,7,8,11,12,12a-dodecahydro-6,10-methanobenzocyclodecen-3,11-diyl diacetate (as per USP)

Synonym:  Paclitaxel Oxetane Ring Opened, Acetyl and Benzoyl Migrated (USP)