Figure 2

Characterization of TSPC derivatization.
(A) Derivatization of D/L-2HG by TSPC. (B) Product ions spectrum of TSPC labeled L-2HG. (C) The extracted-ion chromatograms of D-2HG and L-2HG before and after TSPC labeling. The gradient elution method was used for the separation of TSPC labeled D-2HG and L-2HG.