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. Author manuscript; available in PMC: 2009 Dec 3.
Published in final edited form as: Anal Chem. 2009 Mar 1;81(5):1881–1887. doi: 10.1021/ac801745d

Figure 3.

Figure 3

NanoLC—MS analysis of DES(prop) in urine. (A) Total ion chromatogram (TIC) of the urine sample using the enhanced MS (EMS) mode (m/z 400–1600), part B) Reconstructed ion chromatogram (RIC) corresponding to DESs(prop) (m/z 750.4) in the urine sample, (C) MS spectrum of urine at the elution time of DESs(prop) (9.74 min). A 50 µL urine sample was digested in HCl, purified on an MCX cartridge, and propionylated. See Experimental Section for conditions.