115464-63-6 5,11-Dimethyl-N-ethyl-9-methoxy-6H-pyrido(4,3-b)carbazol-1-amine maleate 6H-Pyrido(4,3-b)carbazol-1-amine, 5,11-dimethyl-N-ethyl-9-methoxy-, (Z)-2-butenedioate (1:1)