33668-12-1 5,11-Dimethyl-6H-pyrido(4,3-b)carbazole 5-23-09-00417 (Beilstein Handbook Reference) 519-23-3 55042-50-7 6H-Pyrido(4,3-b)carbazole, 5,11-dimethyl- BRN 0221300 CCRIS 2003 CP 5 EINECS 208-264-0 Ellipticine Elliptisine ICIG 770 NSC 71795 NSC-71795