1,1'-(5-Methyl-2,4-pyrimidinediyl)diguanidine dihydrochloride 2,4-Diguanidino-5-methylpyrimidine dihydrochloride 32090-58-7 GUANIDINE, 1,1'-(5-METHYL-2,4-PYRIMIDINEDIYL)DI-, DIHYDROCHLORIDE