68656-59-7 N-(5-Chloro-2,4-dimethoxyphenyl)-N'-(imino(methylamino)methyl)-urea hydrochloride Urea, 1-(5-chloro-2,4-dimethoxyphenyl)-3-methylamidino-, hydrochloride Urea, N-(5-chloro-2,4-dimethoxyphenyl)-N'-(imino(methylamino)methyl)-, monohydrochloride