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. Author manuscript; available in PMC: 2014 Aug 19.
Published in final edited form as: Chem Res Toxicol. 2013 Jul 24;26(8):1209–1217. doi: 10.1021/tx400121n

Figure 2.

Figure 2

LC-ESI-MS/MS chromatograms obtained upon analysis of Fraction 1 (Scheme 1) of a human urine sample for free NNAL(2), using the 50 mm column. A and B, monitoring of m/z 210 → m/z 93 for quantitation of NNAL and m/z 216 → m/z 98 for the internal standard [13C6]NNAL. C and D, qualifier ions for NNAL, m/z 210 → m/z 180 and [13C6]NNAL, m/z 216 → m/z 186.