维生素A酸

rac-(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethyl-3-hydroxy-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenoic acid ethyl ester

ethyl (2E,4E,6E,8E)-9-(3-acetoxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenoate

(2E,4E)-[5-(2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadien-1-yl]triphenylphosphonium bromide

ethyl (2E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenoate