(2Z,4Z,6Z,8Z)-4,8,13,17-tetramethyl-11-oxabicyclo[11.4.0]heptadeca-1(17),2,4,6,8-pentaen-10-one

4-甲基-2(H)-呋喃酮

DL-3-甲基-Γ-丁内酯

溴乙烷

3-(O,O-diethylphosphonomethyl)-4-hydroxy-2-butenoic lactone