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

4,4-diethoxy-2-methylbut-1-ene

1,2-dibromo-4,4-diethoxy-2-methylbutane

1-bromo-4,4-diethoxy-2-methylbut-1-ene

11-cis,13-cis-retinal