CAS: 1674-62-0 Molecular Formula: C3 H9 N5 . Cl H Molecular Weight (g/mol): 151.6 Synonym: 1-Methylbiguanide Hydrochloride,Metformin Hydrochloride Imp. E (EP) as Hydrochloride,Imidodicarbonimidic diamide, N-methyl-, hydrochloride (1:1) (ACI),Biguanide, 1-methyl-, hydrochloride (6CI, 7CI, 8CI),Imidodicarbonimidic diamide, N-methyl-, monohydrochloride (9CI),1-Methylbiguanide Hydrochloride,N'-Methylbiguanide monohydrochloride IUPAC Name: 1-carbamimidoyl-3-methylguanidine;hydrochloride SMILES: Cl.CNC(=N)NC(=N)N