The present invention provides a set of novel isobaric chemical tags, also referred herein as SUGAR (Isobaric Multiplex Reagents for Carbonyl Containing Compound). These labeling tags are compact and easy to synthesize at high yield and purity in just a few steps using commercially available starting materials. The tagging reagents of the present invention comprise: a) a reporter group, having at least one atom that is optionally isotopically labeled; b) a balancing group, also having at least one atom that is optionally isotopically labeled, and c) an aldehyde, ketone, or carboxylic acid reactive group. The multiplex SUGAR tags are able to react with an aldehyde, ketone, or carboxylic acid group of the molecule to be tagged, which offers the capability for labeling and quantitation of glycans, proteins/peptides, and fatty acids.
本发明提供了一套新型等位
化学标记,在此也称为 SUGAR(含羰基化合物的等位多重试剂)。这些标记试剂结构紧凑,易于合成,只需几步即可使用市售的起始材料获得高产率和高纯度。本发明的标记试剂包括:a) 一个报告基团,至少有一个原子可选地进行同位素标记;b) 一个平衡基团,至少有一个原子可选地进行同位素标记;c) 一个醛、酮或
羧酸反应基团。多重 SUGAR 标记能与待标记分子的醛、酮或
羧酸基团反应,从而提供了标记和定量聚糖、蛋白质/肽和
脂肪酸的能力。