0 Cefprozil hydrate CAS 121123-17-9 In APIs, Pharmaceutical Chemicals, Products 121123-17-9,Cefprozil hydrate,(6R,7R)-7-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-[(E)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid hydrate