68656-94-0 N-(2,6-Dimethylphenyl)-N'-(1,4,5,6-tetrahydro-2-pyrimidinyl)-urea hydrochloride Urea, N-(2,6-dimethylphenyl)-N'-(1,4,5,6-tetrahydro-2-pyrimidinyl)-, monohydrochloride