22-Dehydro 25-Hydroxy Cholesterol 3-Acetate CAS 157171-88-5
| CAS No. | 157171-88-5 |
| Molecular Formula | C29H46O3 |
| Molecular Weight | 442.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 22-Dehydro 25-Hydroxy Cholesterol 3-Acetate.
CATO supplies 22-Dehydro 25-Hydroxy Cholesterol 3-Acetate (CAS 157171-88-5), a certified reference material (molecular formula C29H46O3, MW 442.67 g/mol) for analytical method development and quality control.
Based on its molecular formula C29H46O3, 22-Dehydro 25-Hydroxy Cholesterol 3-Acetate contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 442.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 22-Dehydro 25-Hydroxy Cholesterol 3-Acetate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H46O3 |
| Molecular Weight | 442.67 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
Related Dehydro Standards
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Recommended Standards
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- 1-(3,4-dichlorophenyl)-4,4-difluorobutane-1,3-dione (CAS 832737-94-7)
- 4-Bromo-6-(trifluoromethyl)nicotinaldehyde (CAS 1060810-63-0)
- Benidipine Impurity 18 (CAS CATO-C4X-112018)
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- Semaglutide impurity 99 (CAS CATO-C4X-222699)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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