1-[[7-Chloro-3-(3-chlorophenyl)-5-methyl-4-oxo-3,5-dihydro-4H-pyridazino[4,5-b]indol-1-yl]carbonyl]pyrrolidine
7-Chloro-N,N-diethyl-3-(3-methoxyphenyl)-5-methyl-4-oxo-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-carboxamide
7-Chloro-3-(3-fluorophenyl)-N,N,5-trimethyl-4-oxo-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-carboxamide
7-Chloro-N,N,5-trimethyl-4-oxo-3-phenyl-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-carboxamide
ethyl 7-chloro-3-(3-fluorophenyl)-5-methyl-4-oxo-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-carboxylate