四氢-6-十一烷基-2H-吡喃-2-酮

5,6-dihydro-4H-1-benzofuran-2-one

7a-hydroxy-2-oxo-4,5,6,7-tetrahydro-1H-indole-3-carbonitrile

5,6,7,8-四氢[1,2,5]恶二唑并[3,4-b]喹喔啉

3,3-dimethyl-4-oxido-1-oxo-5,6,7,8-tetrahydro-2H-quinoxalin-1-ium-2-ol