N-(4-Amino-3,6-dihydro-6-imino-1,3,5-triazin-2-yl)-guanidine Dinitrate; (4,6-Diamino-1,3,5-triazin-2-yl)-guanidine Dinitrate; (4,6-DiaminoS-triazin-2-yl)-guanidine Dinitrate; (Aminoiminomethyl)-1,3,5-triazine-2,4,6-triamine Dinitrate; Monoguanylmelamine Dinitrate; N-(4-Amino-3,6-dihydro-6-imino-1,3,5-triazin-2-yl)guanidine Dinitrate; Metformin EP Impurity B Dinitrate