英文别名Famotidine Impurity 1; Famotidine EP Impurity A; 3-[[2-(diaminomethylideneamino)-1,3-thiazol-4-yl]methylsulfanyl]propanimidamide hydrochloride; Famotidine Related Compound A Hydrochloride; 3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]thio]propanimidamide Hydrochloride; 3-[[[2-[(Aminoiminomethyl)amino]-4-thiazolyl]methyl]thio]propanimidamide monohydrochloride; Famotidine USP Related Compound A; Famotidine EP Impurity A HCl 
