9-methoxy-5-methyl-1-(5'-methylpyridin-2-yl)-3,4-dihydro-6H-pyrido[4,3-b]carbazole

9-Hydroxy-5,6-dimethyl-6H-pyrido[4,3-b]carbazole-1-carboxylic acid ethyl ester

9-methoxy-5-methyl-1-(4'-nitrophenyl)-6H-pyrido[4,3-b]carbazole

5,6-dimethyl-9-methoxy-1-(4'-nitrophenyl)-6H-pyrido[4,3-b]carbazole

9-Methoxy-5,6-dimethyl-6H-pyrido[4,3-b]carbazole-1-carboxylic acid (3-dimethylamino-propyl)-amide