Azide MegaStokes dye 673
Azide MegaStokes dye 673 (CAS: 1246853-81-5; C23H25N5O5S; MW: 483.54) is a fluorescent dye featuring a unique absorption and emission profile. It is utilised as a key reagent in chemical biology and synthesis, particularly for fluorescent labelling and probe development. Its azide functionality allows for facile conjugation via click chemistry, making it valuable in various bioconjugation applications. This compound is supplied by Tech Serve Solutions for research and development purposes.
- IUPAC
- 1-(3-Azidopropyl)-4-[2-[7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl]ethenyl]-3-sulfo-pyridinium inner salt

Fluorescent Labelling
Azide MegaStokes dye 673 can be employed for the fluorescent labelling of biomolecules and other targets. Its distinct spectral properties, with an emission maximum at 673 nm, facilitate detection in various biological imaging and assay systems.
Bioconjugation Chemistry
The presence of an azide group enables Azide MegaStokes dye 673 to participate in click chemistry reactions, such as copper-catalyzed azide-alkyne cycloaddition (CuAAC). This allows for the efficient and specific conjugation to molecules bearing alkyne functionalities.
Fluorescent Probe Development
This dye serves as a building block for the synthesis of novel fluorescent probes. Its spectral characteristics and reactive handle make it suitable for creating sensitive detection tools for biochemical and cellular research.
| Molecular weight | 483.54 |
|---|---|
| Empirical formula | C23H25N5O5S |
| Storage temperature | −20°C |
| Fluorescence | λex 542 nm; λem 673 nm in ethanol |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Azide MegaStokes dye 673 used for?
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Azide MegaStokes dye 673 is used in fluorescent labelling, bioconjugation chemistry via click reactions, and the development of fluorescent probes for research purposes.
What is the CAS number and chemical formula for Azide MegaStokes dye 673?
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The CAS number is 1246853-81-5 and the empirical formula is C23H25N5O5S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Azide MegaStokes dye 673 for research and development. The specific assay and purity are detailed in the product's Certificate of Analysis. Tech Serve Solutions does not represent this product as USP, BP, or EP grade.
How should Azide MegaStokes dye 673 be handled and stored?
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Azide MegaStokes dye 673 has a WGK rating of 3 in Germany, indicating it is hazardous. It should be stored at -20°C and handled with appropriate personal protective equipment in a well-ventilated area, following standard laboratory safety protocols for hazardous chemicals.
How is Azide MegaStokes dye 673 packed, shipped, and exported?
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Azide MegaStokes dye 673 is carefully packaged to ensure safe transit and is available for global export by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical compounds.
How can I request a sample or quote for Azide MegaStokes dye 673?
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To request a sample or a quotation for Azide MegaStokes dye 673, please contact the Tech Serve Solutions sales team through our website or by phone.
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