CMZ01: Cefmetazole

(6R,7S)-7-[2-[(Cyanomethyl)thio]acetamido]-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
[CAS # 56796-20-4]

CMZ02: Cefmetazole Sodium

(6R,7S)-7-[2-[(Cyanomethyl)thio]acetamido]-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Sodium Salt
[CAS # 56796-39-5]