Method of labeling phosphorylated peptide, method of selective adsorption therefor, complex compound for use therein, process for producing the complex compound and starting compound of the complex compound

摘要

Provided are a method for easily detecting phosphorylated peptides, namely, proteins, in samples derived from living organisms or the like, a method for selectively adsorbing the phosphorylated peptides, and compounds that are highly coordinated to the phosphorylated peptides and usable in the methods. The complex compound is represented by the formula: CHEM wherein X is a linker moiety, and Y is a labeling group. The compound (I) is highly coordinated to a phosphorylated peptide. and has a labeling group. Accordingly, with use of the compound (I), the phosphorylated peptide can be easily identified.