Lopinavir EP Impurity S

Chemical Name: (1S,3S)-1-[(1S)-1-[[2-(2,6-Dimethylphenoxy)acetyl]amino]-2-phenylethyl]-3-[[(2S)-3-methyl-2-[2-oxotetrahydropyrimidin-1(2H)-yl]butanoyl]amino]-4phenylbutyl2-(2,6-dimethylphenoxy)acetate (as per EP); (2S,3S,5S)-2-[2-(2,6-Dimethylphenoxy)acetamido]-5-{(S)-3-methyl-2-[2-oxotetrahydropyrimidin-1(2H)-yl]butanamido}-1,6-diphenylhexan-3-yl 2-(2,6-dimethylphenoxy)acetate (as per USP)

Smile: O=C(COC(C(C)=CC=C1)=C1C)O[C@@H](C[C@@H](NC([C@@H](N(CCCN2)C2=O)C(C)C)=O)CC3=CC=CC=C3)[C@](NC(COC(C(C)=CC=C4)=C4C)=O)([H])CC5=CC=CC=C5