2,2-二甲基-1,3-苯并噁嗪-4-酮

2H-1,3-苯并噁嗪-2,4(3H)-二酮

6-[amino(methylsulfanyl)methylidene]cyclohexa-2,4-dien-1-one

6-(5-methyl-1,2,4-oxadiazol-3-ylidene)cyclohexa-2,4-dien-1-one