68656-51-9 N-(2,5-Dimethoxyphenyl)-N'-(imino(methylamino)methyl)-urea hydrochloride Urea, 1-(2,5-dimethoxyphenyl)-3-methylamidino-, hydrochloride Urea, N-(2,5-dimethoxyphenyl)-N'-(imino(methylamino)methyl)-, monohydrochloride