3β-DOXYL-5α-cholestane, free radical
3β-DOXYL-5α-cholestane, free radical (CAS 55569-61-4), molecular formula C31H55NO2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- 4′,4′-Dimethylspiro(5α-cholestane-3,2′-oxazolidin)-3′-yloxy, free radical

| Molecular weight | 473.77 |
|---|---|
| Empirical formula | C31H55NO2 |
| Storage temperature | 2-8°C |
| Application | Free radical spin label used for EPR studies.• Studying transversal relaxation of nitroxides for PELDOR in phospholipid membranes1• Comparative studies of effect of cholesterol on bicelle model membranes2• Spin probe for studying electron spin-lattice relaxation times in aqueous dispersions via saturation recovery3• Probing cooperative and local modes of poly(Me acrylate) sample using ESR4• Studying random disorder effects of hydrophyobic aerosil on order and dynamics of the probe in 5CB nematic liquid crystals5 |
| Melting point | 176-178 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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 3β-DOXYL-5α-cholestane, free radical?
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3β-DOXYL-5α-cholestane, free radical (CAS 55569-61-4), molecular formula C31H55NO2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of 3β-DOXYL-5α-cholestane, free radical does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3β-DOXYL-5α-cholestane, free radical in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of 3β-DOXYL-5α-cholestane, free radical?
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3β-DOXYL-5α-cholestane, free radical has CAS number 55569-61-4 and molecular formula C31H55NO2. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for 3β-DOXYL-5α-cholestane, free radical?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of 3β-DOXYL-5α-cholestane, free radical ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should 3β-DOXYL-5α-cholestane, free radical be stored?
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Store 3β-DOXYL-5α-cholestane, free radical in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is 3β-DOXYL-5α-cholestane, free radical used for?
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3β-DOXYL-5α-cholestane, free radical is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for 3β-DOXYL-5α-cholestane, free radical?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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