ethyl 7-(1,3-benzodioxol-5-yl)hepta-2,6-dienoate

ethyl hept-2-enoate

叔丁基 4-(2-乙氧基-2-氧代亚乙基)哌啶-1-羧酸

(2-ethoxy-2-oxoethyl)phosphonic acid

环己烷亚基乙酸乙酯