Description: Pyranine (Solvent Green 7) is reported as a new class of fluorescent chemosensor for the Cu+ ion. Target: Others. Smiles: O=S(C1=C(C2=C34)C=CC4=C(O)C=C(S(=O)(O[Na])=O)C3=CC=C2C(S(=O)(O[Na])=O)=C1)(O[Na])=O. References: Saha T, et al. In vitro sensing of Cu(+) through a green fluorescence rise of...

Cell-impermeable fluorescent pH indicator used for slightly acidic pH range, pKa = 6.4

8-Hydroxypyrene-1,3,6-trisulfonic acid (HPTS) is a cell-impermeable fluorescent pH probe. It displays excitation maxima of 403 and 450 nm, the intensities of which decrease and increase, respectively, as pH increases from 5 to 9 and an emission maximum of 510 nm. HPTS has been used in excitation ratio imaging to...