.Beta.-Retinoic acid 2,4, 6,8-Nonatetranoic acid, 3,7-dimethyl-9-(2,6, 6-trimethyl-1-cyclohexen-1-yl)-, (2E, 4E, 6E, 8E)- 302-79-4 AIDS-000179 AIDS000179 Aberel Airol Aknefug Aknoten All-trans-Retinoic acid All-trans-Vitamin A acid Dermairol Eudyna NSC122758 Retin-A Retinoic acid Tretinoin, all-trans- Vitamin A1 acid, all-trans-