1-(2,6-Dimethyl-4-hydroxyphenyl)-3-methylamidinourea hydrochloride 68656-63-3 N-(2,6-Dimethyl-4-hydroxyphenyl)-N'-(imino(methylamino)methyl)urea hydrochloride Urea, N-(2,6-dimethyl-4-hydroxyphenyl)-N'-(imino(methylamino)methyl)-, monohydrochloride