1-((Amidinothio)methyl)-5-ethyl-3-methyl-5-phenylbarbituric acid monohydrobromide 1-Methyl-3-(2-isothioureidomethyl)phenobarbital hydrobromide 50309-49-4 BARBITURIC ACID, 1-((AMIDINOTHIO)METHYL)-5-ETHYL-3-METHYL-5-PHENYL-, HBr Barbituric acid, 1-((amidinothio)methyl)-5-ethyl-3-methyl-5-phenyl-, monohydrobromide