N-Phosphorylation labeling was utilized to analyze small metabolites using matrix-assisted laser desorptionâionization time-of-flight mass spectrometry (MALDI-TOF MS). The incorporation of a neutral phosphoryl group with high gas-phase proton affinity not only improved the ionization efficiency of the target molecules, but also greatly reduced the matrix background interference.
利用基质辅助激光解吸电离飞行时间质谱法(MALDI-TOF MS)对小分子代谢物进行了N-
磷酸化标记分析。加入具有高气相质子亲和力的中性
磷酸基团不仅提高了目标分子的电离效率,还大大减少了基质背景干扰。