Paclitaxel EP Impurity R

Chemical Name: 7,11-Methano-1H-cyclodeca[3,4]benz[1,2-b]oxete Benzenepropanoic Acid Derivative; [2aR-2aα,4β,4aβ,6β,9α(αR*,βS*),11α,12α,12aα,12bα]]-α-Hydroxy-β-[(2-methyl-1-oxobutyl)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 Benzenepropanoic Acid; (2aR,4S,4aS,6R,9S,11S,12S,12bS)-12-(Benzoyloxy)-4,11-dihydroxy-9-(((2R,3S)-2-hydroxy-3-(2-methylbutanamido)-3-phenylpropanoyl)oxy)-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b-diyl Diacetate;Benzenepropanoic acid, α-hydroxy-β-[(2-methyl-1-oxobutyl)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*),11α,12α,12aα,12bα]]-7,11-Methano-1H-cyclodeca[3,4]benz[1,2-b]oxete, benzenepropanoic acid deriv.; Dihydrocephalomannine; N-Debenzoyl-N-α-methylbutyrylpaclitaxel

Synonym: N-debenzoyl-N-[(2S)-2-methylbutanoyl]paclitaxel (EP) ; Paclitaxel sec-Butyl analog (USP) ; 2′′,3′′-Dihydrocephalomannine (USP) ; Taxol E