OR 462;Nitecapone;3-(3,4-dihydroxy-5-nitrobenzylidene)pentane-2,5-dione;3-(3,4-Dihydroxy-5-nitrobenzylidene)pentane-2,4-dione;3-[(3,4-Dihydroxy-5-nitrophenyl)methylene]-2,4-pentanedione;2,4-Pentanedione, 3-[(3,4-dihydroxy-5-nitrophenyl)methylene]-;GSH,Nitecapone,glutathione,OR-462,Inhibitor,ROS,Parkinson,COMT,OR 462,inhibit,OR462,allodynia