5-甲基-2(3H)-呋喃酮

(3E)-3-(furan-2-ylmethylidene)oxolan-2-one

alpha-(3,5-二-叔-丁基-4-羟基苄亚基)gamma-丁内酯

3-[[4-(dimethylamino)phenyl]methylidene]oxolan-2-one

(Z)-α-butylidene-γ-butyrolactone