Figure 3.

Selectivity profile of MeRho-Az toward reactive sulfur, oxygen, and nitrogen species. From left to right: blank, NaHS, l-cysteine, dl-homocysteine, glutathione, Na₂S₂O₃, Na₂SO₃, Na₂SO₄, H₂O₂, and DEA NONOate. Conditions: 5 μM MeRho-Az, 250 μM RSONs, PIPES buffer (50 mM, 100 mM KCl, pH 7.4), λ_ex = 476 nm, λ_em = 480–650 nm, 37 °C. Data were acquired after 60 min incubation at 37 °C.