英文别名2-OXOCYCLOPENTANECARBOXYLIC ACID; 2-OXYCYCLOPENTANECARBOXYLIC ACID; 2-Carboxycyclopentanone; 2-Oxocyclopentane-1-carboxylic acid; CYCLOPENTANONE-2-CARBOXYLATE; Loxoprofen Impurity 59; oxocyclopentanecarboxylic acid; Cyclopentanecarboxylic acid,2-oxo; 5-oxocyclopentane-1-carboxylate; 2-Oxo-cyclopentancarbonsaeure 
