3-氨基吩恶嗪酮

3,7,8,10-四甲基-苯并[g]蝶啶-2,4(3H,10H)-二酮

4'-ethyl-1,1',6',7'-tetramethyl-1',4'-dihydro-spiro[imidazolidine-4,2'-quinoxaline]-2,5,3'-trione

2-二甲基氨基环己-2,5-二烯-1,4-二酮

苯醌