英文别名1,1'-(((((1,1-Dioxido-2H-1,2,4,6-thiatriazine-3,5-diyl)bis(ethane-2,1-diyl))bis(sulfanediyl))bis(methylene))bis(thiazole-4,2-diyl))diguanidine; Famotidine Impurity 2; Famotidine EP Impurity B; 3,5-Bis[2-[[[2-[(diaminomethylene)amino]thiazol-4-yl]methyl]thio]-ethyl]-4H-1,2,4,6-thiatriazine-1,1-dioxide; 2-[4-[2-[5-[2-[[2-(diaminomethylideneamino)-1,3-thiazol-4-yl]methylsulfanyl]ethyl]-1,1-dioxo-4H-1,2,4,6-thiatriazin-3-yl]ethylsulfanylmethyl]-1,3-thiazol-2-yl]guanidine; 3,5-bis[2-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]ethyl]-4H-1,2,4,6-thiatriazine 1,1-dioxide 
