68656-93-9 N-(4,5-Dihydro-1-methyl-1H-imidazol-2-yl)-N'-(2,6-dimethylphenyl)-urea hydrochloride Urea, N-(4,5-dihydro-1-methyl-1H-imidazol-2-yl)-N'-(2,6-dimethylphenyl)-, monohydrochloride