Synonyms: 3H-Naphtho(1,2,3-de)quinoline-1-carboxylic acid, 6-bromo-2,7-dihydro-4-methyl-2,7-dioxo-, ethyl ester;3'-Carbethoxy-2-methyl-4-bromoanthrapyridone;NSC 239331;Ethyl 6-bromo-2,7-dihydro-4-methyl-2,7-dioxo-3H-dibenz(f,ij)isoquinoline-1-carboxylate;ethyl 6-bromo-4-methyl-2,7-dioxo-2,7-dihydro-3H-naphtho[1,2,3-de]quinoline-1-carboxylate