Figure 2.

Evaluation of 1 and 2 reactivity with GSH in the absence or in the presence of GSTP1-1. Spectrophotometric analysis. UV–visible spectra of 20 μM 1 (left) and 2 (right) dissolved in buffer A, pH 6.5, recorded at 25 °C (panels A and C) or dissolved in buffer A, pH 7.4, recorded at 37 °C (panels B and D), before and at different times (0–60 min) after the addition of 1 mM GSH (panels A and B) or 1 mM GSH and 20 μM of GSTP1-1 (panels C and D).