OG 488, SE
Tocris Bioscience, part of Bio-Techne | Catalog # 6257
Green fluorescent dye; supplied as NHS ester
Discontinued Product
6257 has been discontinued.
View all Standard Fluorescein, Coumarin and Rhodamine-based products.
Key Product Details
| Description: | Green fluorescent dye; supplied as NHS ester |
| Chemical Name: | 2',7'-Difluoro-3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-5-carboxylic acid 2,5-dioxo-1-pyrrolidinyl ester |
| Molecular Weight: | 509.37 |
Biological Activity for OG 488, SE
OG 488, SE is a green fluorescent dye. pH-insensitive in physiological pH range (pKa = 4.6). Can be used to monitor pH change in acidic organelles or pathways. Excitation/emission λ 501/526 nm.
Optical Data for OG 488, SE
| Emission Color | Green |
|---|---|
| Brightness | |
| λabs | 496 nm |
| λem | 516 nm |
| Extinction Coefficient (ε) | 76,000 M-1cm-1 |
| Quantum Yield (φ) | 0.9 |
| Closest Laser line | 488 nm |
| Reactive Group | NHS ester |
| Reactivity | Primary amines |
| pH Sensitivity | pH-insensitive in physiological pH range (pKa = 4.6) |
| Correction Factor 280 | 0.12 |
| Application | Imaging, acidic organelle probe, flow, STED |
| Alternative For | TFAX 488, SE, 5(6)-SFX (Fluorescein), SE, FITC, |
Plan Your Experiments
Use our spectra viewer to interactively plan your experiments, assessing multiplexing options. View the excitation and emission spectra for our fluorescent dye range and other commonly used dyes.
Spectra Viewer
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