1,3-Cyclohexanedione, 2-(3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenylidene)-5-(4-methoxyphenyl)-, (all-E)- 2-(3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenylidene)-5-(4-methoxyphenyl)-1,3-cyclohexanedione (all-E)- 2-Retinylidene-5-p-methoxyphenyl-1,3-cyclohexanedione, trans- 73685-21-9 all-trans-2-Retinylidene-5-p-methoxyphenyl-1,3-cyclohexanedione