Description
Fluorescein di-beta-D-galactopyranoside is a fluorogenic glycoside substrate used in biochemical and cell-biology applications. It carries CAS number 17817-20-8, the empirical formula C₃₂H₃₂O₁₅, and a molar mass of 656,59 g/mol. Upon enzymatic cleavage of the beta-D-galactopyranoside moieties, the fluorescein core can generate a strong fluorescent signal, making the compound valuable for beta-galactosidase assays, reporter-gene readouts, and related activity measurements. size supports method setup, calibration, and small-series experiments while limiting reagent consumption. Laboratories working in enzymology, molecular biology, or high-sensitivity detection workflows can incorporate this substrate into plate-based or cuvette formats according to established protocols. Available from manufacturer Carl ROTH within the biochemicals range, the material is positioned for research use where a defined fluorescein digalactoside probe is required. Clear molecular parameters facilitate documentation, ordering, and integration into standard operating procedures for fluorescence-based analytical work.
This article is part of Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- Colour: light yellow to yellow
- Form: powder
- Purity (HPLC): ≥98 %
- ¹H-NMR Spectrum: complies
- CAS number: 17817-20-8
- Pack sizes: 5 mg, 10 mg, 25 mg, 50 mg
- Empirical formula: C₃₂H₃₂O₁₅
- Molar mass: 656,59 g/mol
- Storage temperature: -20 °C
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Avertissement
Hazard Statements (H-Phrases)
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Questions about Fluorescein di-beta-D-galactopyranoside, 5 mg
What is this article?
Fluorescein di-beta-D-galactopyranoside, 5 mg is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Fluorescent dyes & labels, inside Dyes, stains & indicators, in Produits chimiques.
A fluorescent dye absorbs at one wavelength and emits at a longer one. As a label it is attached to a protein, a nucleic acid or a cell. Excitation and emission maxima, and the reactive group if it must conjugate, are the specification. The colour name does not tell you the wavelengths.
A dye or a stain binds, or changes colour, so that something invisible becomes visible. An indicator changes at a pH or a redox point. A fluorescent dye absorbs one wavelength and emits another, which is how a microscope or a plate reader picks it out. The excitation and emission, or the transition interval, are the specification. The colour name on the label is not. Structures are on PubChem under IUPAC names. Methods are in the PubMed literature.
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The category is Dyes, stains & indicators. The sub-category is Fluorescent dyes & labels. The catalogue is Produits chimiques.
Shelves beside this one are Microscopy stains & staining solutions and Dyes & pigments.
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