Fluorescein5(6)-isothiocyanate
90%, 5- and 6-isomer mixture
- Product Code: 127131
Alias:
Fluorescein isothiocyanate; 5(6)-fluorescein isothiocyanate, 4'(or 5')-fluorane isothiocyanate
CAS:
27072-45-3
| Molecular Weight: | 389.38 g./mol | Molecular Formula: | C₂₁H₁₁NO₅S |
|---|---|---|---|
| EC Number: | 248-207-7 | MDL Number: | MFCD00005063 |
| Melting Point: | >360 °C(lit.) | Boiling Point: | |
| Density: | Storage Condition: | 2-8°C |
Product Description:
Used extensively as a fluorescent labeling reagent in biochemistry and molecular biology for tagging proteins, antibodies, and other biomolecules. It enables visualization and tracking of these molecules in techniques like fluorescence microscopy, flow cytometry, and immunoassays. Its isothiocyanate group reacts with primary amines, forming stable thiourea bonds for covalent attachment. Commonly applied in diagnostics, cellular imaging, and research to study molecular interactions, localization, and dynamics in biological systems.
Product Specification:
| Test | Specification |
|---|---|
| Appearance | Light Yellow To Yellow To Orange To Brown Powder To Crystal |
| Purity (%) | 89.5-100 |
| Infrared Spectrum | Conforms To Structure |
| NMR | Conforms To Structure |
| Solubility (1mg/mL, Acetone) | Very Faint Yellow To Yellow And Very Faint Green-Yellow To Green-Yellow Liquid |
| Carbon (C) | 54.1-71.0 |
| Nitrogen (N) | 3.0-4.0 |
Sizes / Availability / Pricing:
| Size (g) | Availability | Price | Quantity |
|---|---|---|---|
| 0.050 | 10-20 days | $31.07 |
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| 0.250 | 10-20 days | $85.73 |
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| 1.000 | 10-20 days | $301.24 |
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Fluorescein5(6)-isothiocyanate
Used extensively as a fluorescent labeling reagent in biochemistry and molecular biology for tagging proteins, antibodies, and other biomolecules. It enables visualization and tracking of these molecules in techniques like fluorescence microscopy, flow cytometry, and immunoassays. Its isothiocyanate group reacts with primary amines, forming stable thiourea bonds for covalent attachment. Commonly applied in diagnostics, cellular imaging, and research to study molecular interactions, localization, and dynamics in biological systems.
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| Stable in pH range | - |
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| INCI | - |
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