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A) Proposed reaction of BDP-NAC in the presence of H2O2 leading to the release of NAC–SSH. B) LC chromatograms highlighting the conversion of BDP-NAC into NAC persulfide (NAC-SSH) in the presence of H2O2. Timepoints are noted above each LC chromatogram. The peak eluting at 2.9 min corresponds to BDP-NAC, and the peak at 3.4 min corresponds to NAC-SSH (see Figure S20 for corresponding mass spectrometry data).
