2-氟-3-羟基-5,5-二甲基-2-环己烯-1-酮

6,6-二甲基-6,7-二氢-1-苯并呋喃-4(5H)-酮

8-hydroxy-3,3-dimethyl-2,4-dihydrodibenzofuran-1-one

3,3,9,9-tetramethyl-3,4,9,10-tetrahydrobenzo<1,2-b:4,5-b'>bis(benzofuran-1,7(2H,8H)-dione)

(5,5-dimethyl-3-oxocyclohexen-1-yl) trifluoromethanesulfonate