Synthesis and EPR Evaluation of the Nitrone PBN-[tert-13C] for Spin Trapping Competition
2002 ◽
Vol 57
(1)
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pp. 127-132
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Keyword(s):
N-[tert-13C]Butyl C-phenyl nitrone (PBN-[tert-13C]) has been synthesized for an EPR spin trapping competition study. The newly synthesized PBN-[tert-13C] shows different 13C-hyperfine splitting constants (a13C) when it traps free radicals as compared to another 13C-labeled PBN analogue, N-tert-butyl C-phenyl [nitronyl-13C]nitrone (PBN-[nitronyl-13C]). The PBN- [tert-13C] hydroxyl adduct gives a larger a13C value (5.14 G) as compared to the PBN-[nitronyl-13C] hydroxyl adduct (4.36 G). This gain ofthe a13C value decreases the chance of EPR signal overlap, thus providing a more resolved EPR spectrum when PBN-[tert-13C] is used as an internal standard for EPR spin trapping competition studies of hydroxyl radical formation.
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1994 ◽
Vol 42
(7)
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pp. 1407-1410
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1993 ◽
pp. 2039
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Keyword(s):
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1996 ◽
Vol 51
(1)
◽
pp. 139-143
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Keyword(s):
1993 ◽
Vol 15
(5)
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pp. 528
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