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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2013 Jan 24;24(4):469–480. doi: 10.1007/s13361-012-0543-3

Table 3.

The m/z values and branching ratios of the fragment ions formed upon CAD of the protonated products of addition of the THF radical (or deuterated THF radical) to the pyridine ring at the ortho-position, followed by loss of a hydrogen atom

Production MS2 fragment ions and
their branching ratios		 MS3 fragment ions and
their branching ratios
graphic file with name nihms438868t4.jpg m/z 132 (−H2O) 80% m/z 130 (−H2) 90%
m/z 117 (−CH3) 10%
m/z 120 (−CH2O) 17%
m/z 106 (−C2H4O) 3%
graphic file with name nihms438868t5.jpg m/z 138 (−DHO) 78% m/z 134 (−D2) 87%
m/z 120 (−CD3) 13%
m/z 125 (−CD2O) 19%
m/z 109 (−C2D4O) 3%
graphic file with name nihms438868t6.jpg m/z 139 (−DHO) 80% m/z 135 (−D2) 93%
m/z 121 (−CD3) 7%
m/z 126 (−CD2O) 17%
m/z 110 (−C2D4O) 3%
graphic file with name nihms438868t7.jpg m/z 139 (−DHO) 79% m/z 135 (−D2) 86%
m/z 121 (−CD3) 14%
m/z 126 (−CD2O) 19%
m/z 110 (−C2D4O) 2%