1-(4-Hydroxy-6-methyl-2-pyrimidinyl)-3-phenylguanidine 16018-52-3 GUANIDINE, 1-(4-HYDROXY-6-METHYL-2-PYRIMIDINYL)-3-PHENYL- N-(1,4-Dihydro-6-methyl-4-oxo-2-pyrimidinyl)-N'-phenylguanidine