3306-93-2
ethyl 6,11-dioxonaphtho[2,3-b]indolizine-12-carboxylate
→
6542-18-3
6,11-dioxonaphtho[2,3-b]indolizine-12-carboxamide
109964-49-0
6,11-dioxo-6,11-dihydrobenzo[f]pyrido[1,2-a]indole-12-carboxylic acid