Cefprozil Monohydrate EP Impurity G

Chemical Name: (2R)-2-[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino-2-[(2R)-4-carboxy-5-[(1Z)-prop-1-enyl]-3,6-dihydro-2H-1,3-thiazin-2-yl]-acetic acid (as per EP); (R)-2-{(R)-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido](carboxy)methyl}-5-[(Z)-prop-1-enyl]-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid (as per USP)

Smile: OC1=CC=C([C@@]([H])(N)C(N[C@]([H])(C(O)=O)[C@]2([H])NC(C(O)=O)=C(/C=C\C)CS2)=O)C=C1