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. Author manuscript; available in PMC: 2013 Sep 17.
Published in final edited form as: Chem Res Toxicol. 2012 Jul 3;25(9):1842–1861. doi: 10.1021/tx3000494

Scheme 3.

Scheme 3

Reaction pathways for the MS3 fragmentation of the y2 fragment ions of product 3-h and 3-d-X after incorporation of three deuterons during the reaction of AAPH with GSH/GSH* in D2O. X stands for deuterium incorporation at Cys[αC], Cys[βC], or Gly[αC].