5,9-Dimethyl-7H-dibenzo(c,g)carbazole ,its CAS NO. is 88193-04-8,the synonyms is CCRIS 1743 ; 5,9-Dimethyl-7H-dibenzo(c,g)carbazole ; 7H-Dibenzo(c,g)carbazole, 5,9-dimethyl- .