Acetic acid (2E,4E)-6-hydroxy-3-methyl-hexa-2,4-dienyl ester

Acetic acid (2E,4E)-6,6-diethoxy-3-methyl-hexa-2,4-dienyl ester

2,6-dimethyl-8-hydroxy-2,4,6-octatrien-1-oic acid ethyl ester

(2E,4E)-6-hydroxy-4-methyl-hexa-2,4-dienal

all-E-3',4'-didehydro-2'-apo-β,ψ-caroten-2'-al