6-allyl-1,4-dioxaspiro<4,4>non-7-ene

6-pentyl-1,4-dioxaspiro<4.4>non-7-ene

4-氧代-四氢-硫代吡喃-3-羧酸甲酯

6-pentyl-1,4-dioxa-8-thiaspiro[4.5]decane

3-n-pentyl-3-(methoxycarbonyl)-4-thianone