178169-99-8 6H-Pyrido(4,3-b)carbazole-1-carboxamide, N-(2-(dimethylamino)ethyl)-9-hydroxy-5,6-dimethyl-, dihydrochloride N-(2-(Dimethylamino)ethyl)-9-hydroxy-5,6-dimethyl-6H-pyrido(4,3-b)carbazole-1-carboxamide dihydrochloride NSC 659687 S 16020-2 S16020-2