3-(2-Isothioureidomethyl)-1-methylphenobarbital hydrobromide 5-Ethyl-3-(2-isothioureidomethyl)-1-methyl-5-phenylbarbituric acid hydrobromide 64038-18-2 Barbituric acid, 5-ethyl-3-(2-isothioureidomethyl)-1-methyl-5-phenyl-, hydrobromide