Product: Side chain for meropenem Chemical Name: (2S,4S) -2-(dimethylaminocarbonyl)-4-mercapto-1- (p-nitrobenzyloxycarbonyl) -1-pyrrolidine; (2S-cis)- 2-[(dimethylamino)carbonyl]-4-mercapto-1-pyrrolidinecarboxylic acid, (4-nitro phenyl) methyl ester CAS#: 96034-64-9 Molecular Formula: C15H19N3O5S Molecular Weight: 353.40 Appearance: Slight yellow or off-white powder Melting Point: 116-120 Specific Roation: +9.60- +9.75 (c=1.01, CHCl3) Purity: 98% min. Package: 20 kg/drum