Cefotiam hydrochloride (Standard) is the standard substance of Cefotiam hydrochloride, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Cefotiam hydrochloride (SCE-963 hydrochloride) is the hydrochloride salt form of cefotiam, a third-generation, semi-synthetic, beta-lactam cephalosporin antibiotic with antibacterial activity. Cefotiam binds to penicillin-binding proteins (PBPs), transpeptidases that are responsible for crosslinking of peptidoglycan. By preventing crosslinking of peptidoglycan, cell wall integrity is lost and cell wall synthesis is halted.