Synonyms: Dinaphtho(2,3-i:2',3'-i')benzo(1,2-a:4,5-a')dicarbazole-5,7,12,17,19,24(6H,18H)-hexone;2172-33-0;EINECS 218-524-5;Vat Orange 11;AC1L2O2I;AC1Q6E06;AR-1I5891;6,18-Dihydrodinaphtho(2,3-i:2',3'-i')benzo(1,2-a:4,5-a')dicarbazole-5,7,12,17,19,24-hexone;Dinaphtho(2,3-i:2',3'-i)benzo(1,2-a:4,5-a')dicarbazole-5,7,12,17,19,24-hexone, 6,18-dihydro-;dinaphtho[2,3-i:2,3-i']benzo[1,2-a:4,5-a']dicarbazole-5,7,12,17,19,24(6H,18H)-hexone