GRADE & PURITYBioReagent?BioReagent grade — tested suitable for life-science and molecular-biology use. Use for cell culture, assays, and biochemical work needing biological compatibility.for Fluorescence analysis?Fluorescence-analysis grade — very low fluorescent impurities for clean spectra. Use in fluorescence assays where background interferes.for Microscopy?Microscopy grade — reagents/stains suited to sample prep and imaging. Use in microscopy where clarity and low background are needed.≥90%(HPCE)
BioReagent, for Microscopy, for Fluorescence analysis, ≥90%(HPCE) BioReagent,for Fluorescence analysis,for Microscopy for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Protected from light,Store at -20°C,Desiccated Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
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Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Visão geral
ZnAF‑1F and ZnAF‑2F do not fluoresce in the presence of other biologically important cations such as Ca²⁺ and Mg²⁺, and are insensitive to change of pH. The complexes with Zn²⁺ of previously developed ZnAFs, ZnAF‑1, and ZnAF‑2 decrease in fluorescence intensity below pH 7.0 owing to protonation of the phenolic hydroxyl group of fluorescein, whose pKa value is 6.2. On the other hand, the Zn²⁺ complexes of ZnAF‑1F and ZnAF‑2F emit stable fluorescence under neutral and slightly acidic conditions because the pKa values are shifted to 4.9 by substitution of electron‑withdrawing fluorine at the ortho position of the phenolic hydroxyl group. Spectral data: λex 492 nm; λem 517 nm in PBS.
This compound belongs to the class of organic compounds known as xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene rings joined to each other by a pyran ring.
External Descriptors
Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.
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