3-Carbamoyl-PROXYL
3-Carbamoyl-PROXYL (CAS 4399-80-8) is a stable nitroxide radical with the molecular formula C9H17N2O2. This chemical synthesis reagent is recognised for its utility as a spin label. Its paramagnetic properties enable the non-invasive detection of free radicals <i>in vivo</i>, making it a valuable tool in Electron Spin Resonance (ESR) imaging for biological and chemical research applications.
- IUPAC
- 3-Carbamoyl-2,2,5,5-tetramethyl-1-pyrrolidineoxy,3-Carbamoyl-2,2,5,5-tetramethylpyrrolidin-1-yloxy, free radical
- Synonyms
- 3-Carbamoyl-2,2,5,5-tetramethyl-1-pyrrolidineoxy3-Carbamoyl-2,2,5,5-tetramethylpyrrolidin-1-yloxy, free radical

Spin Labelling for ESR Imaging
As a spin label, 3-Carbamoyl-PROXYL is instrumental in Electron Spin Resonance (ESR) imaging. It allows for the non-invasive detection and study of free radicals within biological systems.
Radical Chemistry Research
This compound serves as a stable radical in various chemical synthesis and research applications. Its paramagnetic nature is exploited to investigate radical reaction mechanisms and kinetics.
Biomedical Research Tool
Its ability to probe radical species in vivo makes it a valuable reagent for researchers in biomedical fields seeking to understand oxidative stress and related phenomena.
| Molecular weight | 185.24 |
|---|---|
| Empirical formula | C9H17N2O2 |
| Storage temperature | 2-8°C |
| Application | A spin label useful for non-invasive detection of free radicals in vivo by electron spin resonance imaging. |
| Melting point | 173-175 °C(lit.) |
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 3-Carbamoyl-PROXYL used for?
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3-Carbamoyl-PROXYL is used as a spin label for the non-invasive detection of free radicals <i>in vivo</i> by electron spin resonance imaging, and in radical chemistry research.
What is the CAS number and formula for 3-Carbamoyl-PROXYL?
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The CAS number for 3-Carbamoyl-PROXYL is 4399-80-8, and its empirical formula is C9H17N2O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Carbamoyl-PROXYL as a research-grade chemical. TSS does not represent this product as USP, BP, or EP grade.
How should 3-Carbamoyl-PROXYL be handled and stored?
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3-Carbamoyl-PROXYL should be stored at 2-8°C. Users should consult the Safety Data Sheet for comprehensive handling information. It is classified under WGK Germany 3.
Is 3-Carbamoyl-PROXYL a controlled substance?
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The provided data does not indicate that 3-Carbamoyl-PROXYL is a controlled substance.
How is 3-Carbamoyl-PROXYL packed, shipped, and exported?
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3-Carbamoyl-PROXYL is carefully packed and exported by Tech Serve Solutions, adhering to all relevant shipping regulations for chemical compounds.
How can I request a sample or quote for 3-Carbamoyl-PROXYL?
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To request a sample or quote for 3-Carbamoyl-PROXYL, please contact the Tech Serve Solutions sales team through our website or by phone.
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