Paclitaxel EP Impurity J

Chemical Name: 4-(acetyloxy)-13α-[[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy]-1,7β-dihydroxy-9-oxo-10β-[(3-oxobutanoyl)oxy]-5β,20-epoxytax-11-en-2α-yl benzoate (as per EP) ; (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6-Acetoxy-9-{[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy}-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-12b-[(3-oxobutanoyl)oxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate (as per USP)

Synonym: 10-O-deacetyl-10-O-(3-oxobutanoyl)paclitaxel (EP) ; 10-Acetoacetylpaclitaxel (USP)