Betamethasone 21-Acetate CAS 987-24-6
| CAS No. | 987-24-6 |
| Molecular Formula | C24H31FO6 |
| Molecular Weight | 434.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 434.50 g/mol gives Betamethasone 21-Acetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Betamethasone 21-Acetate (CAS 987-24-6) is a high-purity analytical reference standard with the molecular formula C24H31FO6 and a molecular weight of 434.50 g/mol.
Based on its molecular formula C24H31FO6, Betamethasone 21-Acetate contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 434.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C24H31FO6 |
| Molecular Weight | 434.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
Related Betamethasone Standards
- Betamethasone Impurity 56 (CAS 5534-12-3)
- Betamethasone impurity 99 (CAS CATO-C4X-143799)
- Betamethasone Impurity 84 (CAS CATO-C4X-143784)
- Betamethasone 21-Acetate-d3 (CAS CATO-CCAD303552)
- Betamethasone Impurity 123 (CAS CATO-C4X-1437123)
- Betamethasone Valerate EP Impurity F (CAS 16125-28-3)
- Betamethasone Impurity 32 (CAS CATO-C4X-147432)
- Betamethasone Impurity 87 (CAS 1549-35-5)
Recommended Standards
- Triamcinolone Acetonide (CAS 76-25-5)
- Paramethasone Acetate (CAS 1597-82-6)
- Halcinonide Impurity 11 (CAS CATO-C4X-279511)
- Flunisolide (CAS 3385-03-3)
- 2-(3,4-Dimethoxyphenyl)-N-(4-fluorophenyl)thiazole-4-carboxamide (CAS 400080-54-8)
- 3-Acetyl-5-hydroxy-5-methyl-4-phenyl-1,5-dihydro-2H-pyrrol-2-one (CAS 343375-36-0)
- N-(Prop-2-yn-1-yl)oxazol-2-amine (CAS 1899056-77-9)
- (4-Amino-2-nitrophenyl)boronic acid (CAS 89466-06-8)
- 1,2-Dibromo-4,5-bis(trifluoromethyl)benzene (CAS 64219-36-9)
- L-Prolyl-L-proline hydrochloride (CAS 76932-06-4)
- (6-Amino-2-oxo-benzooxazol-3-yl)-acetic acidmethyl ester 883545-12-8 (CAS 883545-12-8)
- 4-Chloro-2-(4-methoxypyridin-2-yl)-6-methylpyrimidine (CAS 1416439-97-8)
- 6-Chloro-5-fluoropyridin-2-amine (CAS 1256808-75-9)
- Tirzepatide Impurity 35 (CAS CATO-C4X-324035)
Why CATO?
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