famotidina Ph.Eur.

3-[[[2-[(Diaminomethylidene)amino]thiazol-4- yl]methyl]sulfanyl]-N'-sulfamoylpropanimidamide, [1-amino-3-[[[2-[(diaminometilene)amino]-4-tiazolil]metil]tio]propilidene]sulfamide; N-sulfamoil-3-[(2-guanidinotiazol-4-il)metiltio]propionamide