cay 10731

CAY10731 is a fluorescent probe for hydrogen sulfide (H2S).[1] Upon reaction with H2S, fluorescein (FITC) is released and its fluorescence can be used to detect H2S. FITC displays excitation emission maxima of 485 535 nm, respectively. CAY10731 is selective for H2S over glutathione (GSH), cysteine, H2O3-, SO3-, and H2O2 as well as tBuO and OH radicals. It has been used to detect H2S in rat hippocampal slices and nematodes.