Docetaxel EP Impurity A

Chemical Name: 5β,20-epoxy-1,7β,10β-trihydroxy-9-oxotax-11-ene-2α,4,13α-triyl 4-acetate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate] 2-[(2E)-2-methylbut-2-enoate] (as per EP)

Smile: O[C@@H](C(O[C@H](C(C)=C(C1(C)C)[C@H]2O)C[C@@]1(O)[C@@H](OC(/C(C)=C/C)=O)[C@]3([H]4)[C@@]5(O4C(C)=O)[C@H](OC5)C[C@H](O)[C@@]3(C)C2=O)=O)[C@@H](NC(OC(C)(C)C)=O)C6=CC=CC=C6