英文别名(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethyl-3-oxo-1-cyclohexenyl)nona-2,4,6,8-tetraenoic acid; 4-oxo-Retinoic acid; all-trans 4-Keto Retinoic Acid; Tretinoin Impurity 7; (E)-3,7-Dimethyl-9-(2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenoic acid; 4-Ketoretinoic acid; 4-Oxo-all-trans-retinoic acid; Retinoic acid, 4-oxo-; 4-oxo-all-rans-retinoic acid; 4-Oxoretinoic Acid; 4-keto-Retinoic Acid; 4-Oxotretinoin; 4-Oxo-atRA; (2E,4E,6E,8E)-3,7-Dimethyl-9-(2,6,6-trimethyl-3-oxocyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoic acid 
