1,8,8-trimethyl-6,10-dioxa-spiro[4.5]decane

2,2-bis(4-oxopentyl 2',2'-dimethylpropylene ketal)piperidine

3-(methoxymethoxy)-2,2-dimethylpropan-1-ol

5,5-dimethyl-1,3-dioxan-4-ol

二甲基丙二酸