β-紫罗兰酮

(2Z,5Z,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,5,8-triene-1,4,7-triol

13-顺式视黄醇

dimethyl 2-[(2E)-3-(dimethylamino)-1-methyl-2-propenylidene]malonate

dimethyl 2-[(3E,6E)-1-methyl-5-oxo-7-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1,3,6-heptatrienyl]malonate