Sensitivity booster for mass detection enables unambiguous analysis of peptides, proteins, antibodies, and protein bioconjugates.

A chemical tag enhances peptide detection by multiple orders in mass spectrometry. The substantial improvement in the peptide mapping along with simplified and enhanced fragmentation pattern enables the unambiguous sequencing of a protein and antibody. The chemoselective sensitivity booster provides a tool for remarkably improved analysis of protein bioconjugates.