2-丙-2-基丁二酸

(α-hydroxy-isopropyl)-succinic acid diethyl ester

d-柠檬烯

2,7,7-trimethyl-tricyclo[4.1.1.02,4]octane-3-carboxylic acid

((1R,3Ξ,4Ξ)-3,4-dihydroxy-2,2,3-trimethyl-cyclopentyl)-acetic acid