Desacetyl Cephapirin sodium salt

Desacetyl Cephapirin sodium salt is a deacetylated cephalosporin derivative characterized by a β-lactam ring fused to a thiazole moiety, with a substituted 4-thiazolidinone core. The sodium salt form arises from deprotonation of the carboxylic acid group, while the absence of the 3-position acetyl group distinguishes it from the parent drug, Cephapirin. This compound retains the key functional groups—amino, thiol, and β-lactam—critical for cephalosporin activity. It serves as a reference standard for HPLC-based impurity profiling in Cephapirin API batches.