3,3,5,5-四甲基-1-吡咯啉-N-氧化物是一种自旋捕集试剂。电子自旋共振捕捉技术作为一种简便而有效的手段,正广泛应用于活泼自由基的监测。五元环硝酮类自旋捕捉剂能够有效捕捉和鉴定多种类型的活泼自由基,尤其是氧自由基。
Three new nitrones, 5-n-propyl-5-methyl-1-pyrroline-N-oxide (PMPO), 5-n-hexyl-5-methyl-1-pyrroline-N-oxide (HMPO), and 5-n-decyl-5-methyl-1-pyrroline-N-oxide (DeMPO), amphiphilic versions of the spin trap 5,5-dimethyl-1-pyrroline-N-oxide (DMPO), have been synthesized. A comparative study of the absolute rate constants for formation and decay of the tert-butoxyl spin adducts to these cyclic nitrones as well as 3,3,5,5-tetramethyl-1-pyrroline-N-oxide (M4PO) has been undertaken using esr kinetic techniques.