An object of the present invention is to provide a reagent for protein analysis that has still greater 1) rapidity and 2) high operability, that can be detected with 3) high sensitivity, and that can be detected using 4) a gel imager that carries out excitation with visible light or a detecting device having a highly versatile UV light source (UV transilluminator), and a method for protein analysis.
The present invention relates to a composition for analysis of a protein, the composition containing a compound represented by Formula I
or a salt thereof; when the composition is applied to a support containing a separated protein, staining and fixation of the protein being carried out thereby, and no destaining of the support after application being required.