Suzuki-Miyauara cross-coupling has been used for mass-spectrometry-based chemoproteomics, including for target deconvolution and site of labeling studies. We also demonstrated that Suzuki-Miyauara cross coupling and CuAAC can be combined for dual target labeling for mass spectrometry-based proteomics. Furthermore, multiplexed CuAAC Suzuki-Miyaura chemoproteomics platform has been successfully applied to identify the protein targets of bifunctional cysteine- and lysine-reactive crosslinking probes.