104514-48-9 16639-19-3 Retinyl beta-glucuronide Retinylglucuronide beta-D-Glucopyranosiduronic acid, 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenyl, (all-E)-