68656-75-7 N-(2,6-Dichlorophenyl)-N'-((ethylamino)iminomethyl)-urea hydrochloride Urea, 1-(2,6-dichlorophenyl)-3-ethylamidino-, hydrochloride Urea, N-(2,6-dichlorophenyl)-N'-((ethylamino)iminomethyl)-, monohydrochloride