羟基乙酸

丙酮

2,2-dimethyl-5-oxo-1,3-dioxolane-4-carboxylic acid

3-甲基-1,2-丁二烯

3,3,5-trimethyl-5-(3,5,5-trimethyl-1,2,4-trioxolan-3-yl)-1,2,4-trioxolane