A novel fluorescent probe for imaging endogenous hydrogen sulphide via the CSE enzymatic pathwayElectronic supplementary information (ESI) available. See DOI: 10.1039/c5cc03927d

In this paper, we developed a novel fluorescent probe B601 for endogenous H 2 S detection. In the probe B601 , the fast responding and highly selective reaction site towards H 2 S, incorporating the membrane permeable BODIPY fluorescent dye, enables the probe to be applied for the detection of endogenous H 2 S via the CSE enzymatic pathway. The capability of monitoring endogenous H 2 S via the CSE enzymatic pathway was proved by utilizing a novel designed probe.