Bis(p-beta-diethylaminoethylaminophenyl)methane tetrahydrochloride Ethylenediamine, N,N''-methylenedi-p-phenylenebis(N',N'-diethyl-, tetrahydrochloride KV5250800 N,N''-Methylenedi-p-phenylenebis(N',N'-diethylethylenediamine dihydrochloride)