1495
The antioxidant capacities of novel heterocyclic compounds , including the compounds acting either by prevention of formation or catalyzed decomposition of peroxynitrite anion ( ONOO - ) , namely the peroxynitrite decomposition catalysts or as superoxide ( O2 * - ) - scavengers which are the functional mimetics of superoxide dismutase ( SOD ) enzymes ( SODm ) , as well as the derivatives of 6 - nitro - 3 , 4 - methylenedioxyphenyl - Nacylhydrazone ( LASSBio - 881 ) or gamma - butyrolactone ( LPP1 , BM113 , BM113A , BM138 and BM138A ) are also discussed as potent and promising future heterocyclic analgesics .
 peroxynitrite, ONOO -, peroxynitrite, superoxide, O2 * -, superoxide, 6 - nitro - 3 , 4 - methylenedioxyphenyl - Nacylhydrazone, LASSBio - 881, gamma - butyrolactone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 peroxynitrite, ONOO -, peroxynitrite, superoxide, O2 * -, superoxide, 6 - nitro - 3 , 4 - methylenedioxyphenyl - Nacylhydrazone, LASSBio - 881, gamma - butyrolactone