Dexamethasone 21-Mesylate CAS 2265-22-7
| CAS No. | 2265-22-7 |
| Molecular Formula | C23H31FO7S |
| Molecular Weight | 470.55 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.
Dexamethasone 21-Mesylate (CAS 2265-22-7) is a high-purity analytical reference standard with the molecular formula C23H31FO7S and a molecular weight of 470.55 g/mol.
Dexamethasone 21-Mesylate (C23H31FO7S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Dexamethasone 21-Mesylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C23H31FO7S |
| Molecular Weight | 470.55 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Dexamethasone Standards
- Dexamethasone Impurity 108 (CAS CATO-C4X-1165108)
- Dexamethasone Impurity 109 (CAS CATO-C4X-1165109)
- Dexamethasone Impurity 117 (CAS CATO-C4X-1165117)
- Dexamethasone Impurity 128 (CAS CATO-C4X-1165128)
- Dexamethasone Sodium Phosphate EP Impurity C (CAS CATO-C4X-116522)
- Dexamethasone Sodium Phosphate Impurity B (CAS 360-63-4)
- Dexamethasone Sodium Phosphate EP Impurity D (CAS CATO-C4X-116528)
- Dexamethasone Sodium Phosphate EP Impurity E (CAS CATO-C4X-116529)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com