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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Free Radic Biol Med. 2009 Apr 8;47(1):72–78. doi: 10.1016/j.freeradbiomed.2009.04.002

Table 2.

Electrospray ionization mass spectrometry of Mn(III) N-alkylpyridylporphyrins. Samples at 5 μM concentration were prepared in a H2O-acetonitrile (1:1, v/v; containing 0.1 % v/v HFBA).

Peak Assignment m/z
MnTnBu-3-PyPCl5 MnTnHex-3-PyPCl5 MnTnHep-2-PyPCl5
Found Calculated Found Calculated Found Calculated
[MnT(alkyl)-2,3-PyP5+ + 2HFBA−]3+/3 442.3, 442.1 479.7 479.7 498.4 498.2
[MnT(alkyl)-2,3-PyP5+ + HFBA—2H+]2+/2 - 600.6 612.5 612.2 639.5 640.2
[MnT(alkyl)-2,3-PyP5+ + 2HFBA− - H+]2+/2 663.2, 662.6 - 718.7 746.8 746.7
[MnT(alkyl)-2,3-PyP5+ + 3HFBA−]2+/2 769.5 769.6 825.7 825.7 853.5 853.8