2-[[4-(2-carboxyanilino)-3,6-dioxocyclohexa-1,4-dien-1-yl]amino]benzoic acid

N-(3,6-dioxo-cyclohexa-1,4-dienyl)-anthranilic acid

ethyl 4-phenylpyridine-3-carboxylate

ethyl 6-hydroxy-4-phenylbenzofuro[2,3-b]pyridine-3-carboxylate

2-(methoxymethoxymethyl)cyclohexa-2,5-diene-1,4-dione