FaMotidine EP IMpurity D;FaMotidine AMide IMpurity;Famotidine impurity D CRS;FaMotidine Related CoMpound D;Famotidine USP Related Compound D;Famotidine EP Impurity D (USP RC D);Famotidine Impurity 4(Famotidine EP Impurity D);3-[[[2-[(AMinoiMinoMethyl)aMino]-4-thiazolyl]Methyl]thio]propanaMide;3-[[[2-[(Diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanamide;3-(((2-((diaminomethylene)amino)thiazol-4-yl)methyl)thio)propanamide