1,4,7,10-tetrahydro-1,10-phenanthroline-4,7-dione

5-[[2-[(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)methylamino]anilino]methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

1,4,7,10-tetrahydro-3,8-dicarboxy-1,10-phenanthroline-4,7-dione

1,4,7,10-tetrahydro-3,8-bis(ethoxycarbonyl)-1,10-phenanthroline-4,7-dione

1,2-苯二胺