CAS: 129083-44-9 Molecular Formula: C10 H14 N8 S4 Molecular Weight (g/mol): 374.53 Synonym: 2,2'-[Disulfanediylbis-(methylenethiazole-4,2-diyl)]diguanidine,Famotidine Imp. E (EP) IUPAC Name: 2-[4-[[[2-(diaminomethylideneamino)-1,3-thiazol-4-yl]methyldisulfanyl]methyl]-1,3-thiazol-2-yl]guanidine SMILES: NC(=Nc1nc(CSSCc2csc(N=C(N)N)n2)cs1)N