1,2-Propanediamine, N(sup 1)-(2,6-dimethylphenyl)-, dihydrochloride 1-(2,6-Dimethylphenylamino)-2-aminopropane dihydrochloride 83843-35-0 N(sup 1)-(2,6-Dimethylphenyl)-1,2-propanediamine dihydrochloride