Product name2-mercapto-5-methyl -1,3,4 thiadiazoleMMTD CAS No.[29490-19-5] Molecular formC3H4S2N2 Molecular weight132.21 Quality index White powder, sol. in hot water,alcohol. Assay,%≥99.0% Melting point,183.0-187.0 Weight loss,%≤0.5% Package25KG per drum UsageAs material for Cefazolin, Cefazedone, etc.