66871-53-2 N-(4-Amino-2,6-diethylphenyl)-N'-(imino(methylamino)methyl)-urea dihydrochloride Urea, 1-(4-amino-2,6-diethylphenyl)-3-methylamidino-, dihydrochloride Urea, N-(4-amino-2,6-diethylphenyl)-N'-(imino(methylamino)methyl)-, dihydrochloride