MXS is a mitochondria-targeted fluorescent probe for hypochlorous acid (HOCl).1 It selectively fluoresces in the presence of OCl- over O2, H2O2, NO, NO2-, NO3-, O2-, ONOO-, and •OH when used at a concentration of 10 µM. MXS has been used to monitor real-time mitochondrial HOCl levels in living cells. It displays excitation/emission maxima of 530/654 nm, respectively.
1.Gong, J., Liu, C., Cai, S., et al.Novel near-infrared fluorescent probe with a large Stokes shift for sensing hypochlorous acid in mitochondriaOrg. Biomol. Chem.18(38)7656-7662(2020)