has role is protonated form of has functional parent monocarboxylic acid propionic acid non-steroidal anti-inflammatory drug non-narcotic analgesic antipyretic EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor cyclopentanones prodrug racemate loxoprofen CHEBI:76172 A monocarboxylic acid that is propionic acid in which one of the hydrogens at position 2 is substituted by a 4-[(2-oxocyclopentyl)methyl]phenyl group. A prodrug that is rapidly converted into its active <i>trans</i>-alcohol metabolite following oral administration. loxoprofen(1-)