1-(2-hydroxy-3,4-dimethylphenyl)ethanone

(E)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexenyl)-2-butenal

(7E)-9-ethynyl-β-ionol

(E)-3-(4-methylthio-1,3-dithiane-2-yl)-2-methyl-propenal

all-trans-Retinonitrile