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| Product Name | Bright Red NHS Ester Fluorescent Labeling Dye (Ex/Em 590/617 nm) |
| Catalog No. | RERE-0007 |
| Description | A bright red fluorophore supplied as the amine-reactive NHS ester. It labels the primary amine groups of proteins, amine-modified oligonucleotides and other amine-bearing molecules, and is most often applied to protein and antibody tagging. Emission at 617 nm keeps the signal clear of green channels, so it pairs well with green- and orange-emitting labels in multi-colour experiments. |
| Intended Use | Primary-amine labelling of proteins, antibodies, amine-modified oligonucleotides and other amine-containing molecules. |
| Principle / Technology | The NHS ester forms stable amide bonds with primary amines (R-NH2), attaching the bright red fluorophore to the target molecule. |
| Detection Method | Fluorescence detection with excitation/emission of 590/617 nm. |
| Sample Type | Purple solid. |
| Performance Range / Specifications | CAS 1638544-48-5; molecular formula C39H35N3O13S2(2-); molecular weight 817.84 g/mol; appearance purple solid; purity ≥70%; Ex/Em 590/617 nm. |
| Specificity | Selective for primary amines; red emission with good separation from green and orange labels. |
| Reaction Conditions / Protocol | Prepare a dry stock in anhydrous solvent, react with the amine-bearing substrate under the chosen buffer conditions, then purify the conjugate away from free dye. |
| Components / Formulation | One vial of dye; solvents and purification media are provided by the user. |
| Storage Conditions | Store at -25 to -15 °C, protected from light. |
| Shelf Life | 12 months under the recommended storage conditions. |
| Package Specifications | 1 mg, 5 mg, 10 mg or 50 mg |
| Product Form | Purple solid. |
| Quality Control | Released at purity ≥70% against the documented specification. |
| Key Features | - Bright red emission clear of green and orange channels - Direct primary-amine coupling - Four pack sizes from 1 mg to 50 mg - Suits protein and antibody tagging - One-year shelf life protected from light |
| Purity | ≥70% |
| Activity / Unit Definition | No unit definition; performance is defined by its spectra and amine coupling. |
| Molecular Weight | CAS 1638544-48-5; molecular formula C39H35N3O13S2(2-); molecular weight 817.84 g/mol. |
| Source / Origin | Synthetic small-molecule fluorophore, supplied as a purified solid. |
| pH Range / Optimal pH | Does not apply; pH is not a meaningful specification for this product type. |
| Expiration Date / Stability | Stable through the stated shelf life when kept protected from light at the recommended storage temperature. |
| Regulatory / Compliance | Restricted to research applications. |
| Compatibility | Compatible with standard fluorescence instrumentation - microscopes, plate readers, flow cytometers or imaging systems as appropriate to the format. |
| Recommended Buffer System | No buffer is included; prepare anhydrous stock fresh before use. |
| Application Notes / Precautions | Handle protected from light, minimise freeze-thaw cycles by preparing aliquots, and verify that the detection channel matches the dye before use. |
| Batch-to-Batch Consistency | Each production lot is released against fixed acceptance criteria, keeping performance consistent between orders. |
| Model Type | Amine-reactive fluorescent dye (NHS ester) |
| Starting Material / Tissue Site | Synthesised red fluorophore, esterified as the NHS ester |
| Delivery Standard | Pack sizes 1 mg, 5 mg, 10 mg and 50 mg |
| Turnaround Time | No turnaround figure is published; shipping is arranged when the order is confirmed. |
| Readouts / Downstream Assays | Excitation/emission 590/617 nm on a red channel. |
For research use only, not for clinical use.
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