2,5-dichloro-3,6-bis[(9-ethylcarbazol-3-yl)amino]cyclohexa-2,5-diene-1,4-dione

9-ethyl-4-nitrocarbazol-3-amine

N-(9-ethyl-4,6-dinitrocarbazol-3-yl)formamide

ethyl N-(9-ethyl-4,6,8-trinitrocarbazol-3-yl)carbamate

N-(9-ethylcarbazol-3-yl)-2-[[2-[(9-ethylcarbazol-3-yl)carbamoyl]phenyl]disulfanyl]benzamide