6,11-二氢-5H-苯并[b]咔唑-6,11-二酮

ethyl 5-hydroxy-4,7-dioxo-1-benzofuran-6-carboxylate

2-propan-2-yloxynaphthalene-1,4-dione

4-hydroxy-3-(4-methoxyphenyl)naphthalene-1,2-dione

4-hydroxy-3-nitronaphthalene-1,2-dione