3-Amidino-1-(2,6-diethylphenyl)-1-ethyl-urea hydrochloride 68656-72-4 N'-(Aminoiminomethyl)-N-(2,6-diethylphenyl)-N-ethylurea hydrochloride Urea, N'-(aminoiminomethyl)-N-(2,6-diethylphenyl)-N-ethyl-, monohydrochloride