1-(3-Diethylaminopropylamino)-4,5-dimethyl-8-hydroxy-5H-pyrido(4,3-b)indole dimaleate 111491-26-0 5H-Pyrido(4,3-b)indol-8-ol, 1-((3-(diethylamino)propyl)amino)-4,5-dimethyl-, (Z)-2-butenedioate (1:2) (salt) SR 95646A