3-[2-(3-hydroxybutyl)-1,3-dioxolan-2-yl]prop-2-enoic acid

(+/-)-4-(2-furyl)-butan-2-ol acetate

(E)-3-(2-(3-acetoxybutyl)-1,3-dioxolan-2-yl)acrylic acid

7-acetoxy-4-oxooct-2-enoic acid

(+/-)-(E)-7-acetoxy-4-oxo-2-octenoic acid