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Boronate-based optical probes for H2O2. Treatment of colorless, non-fluorescent Peroxyfluor-1 (PF1) with hydrogen peroxide yields bright green fluorescein. Peroxyresorufin-1 (PR1) and Peroxyxanthone-1 (PX1) give red and blue fluorescent compounds upon treatment with hydrogen peroxide. Mono-boronate analogs Peroxycrimson-1 (PC1) and Peroxygreen-1 (PG1) are minimally fluorescent compounds that give turn-on responses to physiological levels of hydrogen peroxide.
