7356-81-2 Guanidine, N,N'''-1,6-hexanediylbis-, dihydrochloride Guanidine, hexanedi-, dihydrochloride Hexamethylenediguanidine dihydrochloride Hexanediguanidine dihydrochloride NSC38328 WLN: MUYZM6MYZUM &GH 2