Cefaclor Monohydrate ;
(6R,7R)-7-[[(2R)-2-Amino-2-phenylacetyl]amino]-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid monohydrate ;
CAS # 70356-03-5 (monohydrate); 53994-73-3 (anhydrous) ;
C15H16ClN3O5S (monohydrate) ; MW: 385.82 ;