18-Hydroxyretinoic acid 2,4,6,8-Nonatetraenoic acid, 3,7-dimethyl-9-(6,6-dimethyl-2-(hydroxymethyl)-1-cyclohexen-1-yl)-, (E)- 63531-93-1 Retinoic acid, 18-hydroxy- (9CI) Ro 12-4825 all-trans-9-(2-(Hydroxymethyl)-6,6-dimethyl-1-cyclohexen-1-yl)-3,7-dimethyl-2,4,6,8-nonatetraenoic acid