(S)-(1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 2-(chloromethyl)butanoate

(1R,3R,4S)-p-menthan-3-yl (2R)-2-hydroxymethylbutyrate

(1R,3R,4S)-p-menthan-3-yl hydrogen (R)-ethylmalonate

乙基丙二酸

惕各酸异丙酯