5-CHOLESTEN-3-OL-22-ONE CAS 19243-30-2
| CAS No. | 19243-30-2 |
| Molecular Formula | C27H44O2 |
| Molecular Weight | 400.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-CHOLESTEN-3-OL-22-ONE (CAS 19243-30-2) is a high-purity analytical reference standard with the molecular formula C27H44O2 and a molecular weight of 400.64 g/mol.
The molecular framework of 5-CHOLESTEN-3-OL-22-ONE (C27H44O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C27H44O2 |
| Molecular Weight | 400.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related CHOLESTEN Standards
- 4-CHOLESTEN-6α-OL-3-ONE (CAS 570-90-1)
- 5-CHOLESTEN-3β-OL METHYL ETHER (CAS 1174-92-1)
- 5-Cholesten-24(RS)-methyl-d3-3β-ol (CAS 23929-42-2)
- 4-Cholesten-3-one-2,2,4,6,6-d5 (CAS 72560-60-2)
- 1, (5α)-CHOLESTEN-3-ONE (CAS 566-44-9)
- 4-Cholesten-3β-Ol (CAS 517-10-2)
- 4-Cholesten-3-one-4-13C (CAS 68165-57-1)
- 7, (5a)-CHOLESTEN-3-ONE (CAS 15459-85-5)
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