HPF

The biology of highly reactive oxygen radical species is of great interest in many biomedical research disciplines, including neurodegeneration, aging, cancer, and infectious diseases. There are a number of fluorescent reagents, such as 2,7-dichlorodihydrofluorescein (DCDHF), that can be used to detect free radicals, but they have significant limitations due to their facile oxidation by light and numerous non-radical oxidants such as hydrogen peroxide (H2O2). HPF is a cell-permeable aromatic amino-fluorescein derivative that has little intrinsic fluorescence. It undergoes oxidation only by highly reactive oxygen species (hROS) such as the hydroxyl radical, peroxynitrite, and hROS generated from a peroxidase/H2O2 system. It is inert to hypochlorite ion, nitric oxide, hydrogen peroxide (H2O2), superoxide, and other oxidants. Upon oxidation, HPF is converted to the highly fluorescent molecule fluorescein, with excitation/emission maxima of 490/515 nm, respectively, allowing the simple direct detection of highly reactive biological radicals.Formal Name: (2-[6-(4'-hydroxy)phenoxy-3H-xanthene-3-on-9-yl]benzoic acid. CAS Number: 359010-69-8. Molecular Formula: C26H16O6. Formula Weight: 424.4. Purity: >98%. Formulation: (Request formulation change), A solution in methyl acetate. Solubility: DMF: 20 mg/ml, DMSO: 20 mg/ml, Ethanol: 20 mg/ml, Ethanol:PBS (pH 7.2)(1:8): .15 mg/ml. lambdamax: 228, 277 nm. SMILES: OC(C=C1)=CC=C1OC2=CC3=C(C=C2)C4(C(C=CC=C5)=C5C(O4)=O)C6=CC=C(O)C=C6O3. InChi Code: InChI=1S/C26H16O6/c27-15-5-8-17(9-6-15)30-18-10-12-22-24(14-18)31-23-13-16(28)7-11-21(23)26(22)20-4-2-1-3-19(20)25(29)32-26/h1-14,27-28H. InChi Key: NPOSMYDPUKBGQL-UHFFFAOYSA-N.