FAM hydrazide, 6-isomer
| Cat. # | Quantity | Price | Lead time | Buy this product |
|---|---|---|---|---|
| 15170 | 1 mg | $110 | in stock | |
| 25170 | 5 mg | $210 | in stock | |
| 45170 | 25 mg |
$410
|
in stock | |
| 55170 | 50 mg |
$695
|
in stock | |
| 65170 | 100 mg |
$1190
|
in stock |
Fluorescein (FAM) is a xanthene dye, a parent of fluorescein dye series. This is a hydrazide derivative for the labeling of carbonyl compounds, aldehydes, and ketones.
Fluorescein is a bright dye that is compatible with a great number of instruments.
Carbohydrates are also often labeled with hydrazides by a protocol involving their oxidation with periodate first, and reacting with dye hydrazide after it.
FAM absorbance and emission spectra
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General properties
| Appearance: | yellow/orange solid |
| Mass spec M+ increment: | 371.1 |
| Molecular weight: | 426.81 |
| CAS number: | 2183440-65-3 (hydrochloride); 151890-73-2 |
| Molecular formula: | C21H15N2ClO6 |
| IUPAC name: | Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxylic acid, 3',6'-dihydroxy-3-oxo-, hydrazide, hydrochloride |
| Solubility: | good in DMF, DMSO, alcohols |
| Quality control: | NMR 1H, HPLC-MS (95%) |
| Storage conditions: | Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate. |
| MSDS: | Download |
| Product specifications |
Spectral properties
| Excitation/absorption maximum, nm: | 492 |
| ε, L⋅mol−1⋅cm−1: | 74000 |
| Emission maximum, nm: | 522 |
| Fluorescence quantum yield: | 0.93 |
| CF260: | 0.22 |
| CF280: | 0.17 |
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