Experimental: Stock solutions of each of the triazine compounds listed in Table 1 were prepared at concentrations of 1 mg/ml in 2:1 methanol/water. Alpha-Cyano-4-hydroxyxinnamic acid (CHCA, formula = C 10 H 7 NO 3 ) was used as the MALDI matrix. CHCA was dissolved in 1:1 water/ acetonitrile containing 0.1% trifluoroacetic acid at a concentration of 10 mg/mL. A 0.5 μL mixture of sample and CHCA (1/1, v/v) was deposited and dried on the MALDI target plate. The SpiralTOF was operated in positive-ion mode using the full 17-meter flight path. Matrix peaks were used as internal mass reference standards for calibration with the native MS Tornado software.