A newly designed cell-permeable SNARF derivative as an effective intracellular pH indicatorElectronic supplementary information (ESI) available: Further experimental details and data. See DOI: 10.1039/c003167d

We have successfully developed a new cell-permeable SNARF derivative that is activated inside the cell by ester hydrolysis and is notable for having reduced background fluorescence. We have successfully developed a new cell-permeable SNARF derivative that is activated inside the cell by ester hydrolysis and is notable for having reduced background fluorescence.