Cholesterol 4alpha-Methyl 7-En Analog CAS 481-25-4
| CAS No. | 481-25-4 |
| Molecular Formula | C28H48O |
| Molecular Weight | 400.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Cholesterol 4alpha-Methyl 7-En Analog (CAS 481-25-4) is a high-purity analytical reference standard with the molecular formula C28H48O and a molecular weight of 400.68 g/mol.
Cholesterol 4alpha-Methyl 7-En Analog (C28H48O) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C28H48O |
| Molecular Weight | 400.68 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Cholesterol Standards
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Recommended Standards
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- Methost-8-enol (CAS 5241-22-5)
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