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 EINECS 257-188-4 Ethyl 6-bromo-2,7-dihydro-4-methyl-2,7-dioxo-3H-dibenz(f,ij)isoquinoline-1-carboxylate NSC 239331