Cefprozil - (6R,7R)-7-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-(1-propen-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid;
Cefprozil EP Impurity B - (6R,7R)-7-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]- amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2- ene-2-carboxylic acid
Cefprozil EP Impurity H - (6R,7R)-7-[[(2R)-2-[[(2R)-2-amino-2-(4-hydroxyphenyl)- acetyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3- [(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2- carboxylic acid;
Cefprozil EP Impurity M - (6R,7R)-7-[[(2R)-2-amino-2-[4-[(ethoxycarbonyl)- oxy]phenyl]acetyl]amino]-8-oxo-3-[(1Z)-prop-1-enyl]-5- thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid;
Cefprozil (Z)-Isomer – (6R,7R)-7-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-((Z)-prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; (Z)-Cefprozil ; cis-Cefprozil
Cefprozil (E)-Isomer- (6R,7R)-7-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-((E)-prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ;