Vitamin A alcohol维生素 A1AxerophtholVitamin A1抗干眼醇Retinol视黄醇全反式-3,7-二甲基-9-(2,6,6-三甲基-1-环己烯-1-基)-2,4,6,8-壬四烯-1-醇维生素 A 醇维生素 AVitamin Aall-trans-3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraen-1-ol
Unit Definition 1 U corresponds to 1 international U acc. to Ph Eur II, 217 (1983) Biochem/physiol Actions Retinal, retinol and retinoic acid are the aldehyde, alcohol and acid forms of vitamin A. The retinoids exist as many geometric isomers due to the unsaturated bonds in the aliphatic chain.Retinol is biological active in a wide range of processes.