(5α,22R,23R,24S)-22,23-Dihydroxyergostane-3,6-dione CAS 124853-28-7
| CAS No. | 124853-28-7 |
| Molecular Formula | C28H46O4 |
| Molecular Weight | 446.66 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.
(5α,22R,23R,24S)-22,23-Dihydroxyergostane-3,6-dione (CAS 124853-28-7) is a high-purity analytical reference standard with the molecular formula C28H46O4 and a molecular weight of 446.66 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, (5α,22R,23R,24S)-22,23-Dihydroxyergostane-3,6-dione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 446.66 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H46O4 |
| Molecular Weight | 446.66 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
Recommended Standards
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