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. Author manuscript; available in PMC: 2014 Dec 17.
Published in final edited form as: Anal Chem. 2013 Nov 22;85(24):11966–11972. doi: 10.1021/ac402906d

Figure 6.

Figure 6

Reactive DESI-MS spectra of mixture composed of 5 μM RNase A and 200 mM sulfolane (in 20 mM NH4OAc aqueous solution; 5 μL min-1) in the sample transfer capillary (“S”) and the DESI probe (“D”) spraying (5 μL min-1) 50 μM of (a) CMP, (b) CDP, and (c) CTP in 20 mM NH4OAc aqueous solution. (d) Sulfolane (200 mM) was mixed with CTP and sprayed through the DESI probe. (apo – open circles; holo – filled circles)