(3R,3'S,5'R)-3,3'-Dihydroxy-β,K-carotin-6'-on Retinylpalmitat Retinylacetat 4-(2,6,6-Trimethylcyclohex-1-en-1-yl)-but-3-en-2-on β,ε-Carotin-3,3'-diol Vitamin A 17β-Hydroxy-17-methylandrosta-4,9(11)-dien-3-on 1-(2,6,6-Trimethyl-1-cyclohexen-1-yl)pent-1-en-3-on Lanosterin 2,6,6-Trimethyl-1-cyclohexen-1-acetaldehyd Canthaxanthin 16-Methyl-20-oxopregna-5,16-dien-3-β-ylacetat Vitamin-A-s?ure 1,2,3,4,5,6-Hexamethylbicyclo(2,2,0)hexa-2,5-dien