1-Naphthalenesulfonamide, 5-(dimethylamino)-N-(2-(dimethylamino)ethyl)-, monohydrochloride 74686-82-1 DDNS Dimethylaminonaphthalene-5-sulfonaminoethylmethylamine Dimethylaminonaphthalene-5-sulfonaminoethylmethylamine hydrochloride