3'-Carbethoxy-2-methyl-4-bromoanthrapyridone 3H-Dibenz[f,ij]isoquinoline-1-carboxylic acid, 6-bromo-2,7-dihydro-4-methyl-2,7-dioxo-, ethyl ester 51418-86-1 6-Bromo-1-carbethoxy-4-methyl-2,7-dibenz[f,ij]isoquinoline-2,7-dione NSC239331