What are the huge mess peaks (6-5ppm) in peptide proton NMR?

Hi, This is our peptide proton NMR with water suppression. The solvent we are using is 90% 20mM phosphate buffer + 10% D2O (pH=7). The problem we had is that the NMR of this peptide has the mess...

25 March 2025 850 0 View