Betamethasone-17-butyrate-21-propionate CAS 5534-02-1
| CAS No. | 5534-02-1 |
| Molecular Formula | C29H39FO7 |
| Molecular Weight | 518.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Betamethasone-17-butyrate-21-propionate.
Betamethasone-17-butyrate-21-propionate (CAS 5534-02-1), molecular formula C29H39FO7 and molecular weight 518.61 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system, Betamethasone-17-butyrate-21-propionate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 518.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Betamethasone-17-butyrate-21-propionate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H39FO7 |
| Molecular Weight | 518.61 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | F-containing |
Related Betamethasone Standards
- Betamethasone Dipropionate EP Impurity E (CAS 5534-09-8)
- Betamethasone-D10 Dipropionate (CAS 5593-20-4 (unlabelled))
- Betamethasone-d10 Dipropionate (CAS CATO-CS357077)
- Betamethasone Impurity 115 (CAS 1564242-51-8)
- Betamethasone Impurity 113 (CAS CATO-C4X-1437113)
- Betamethasone Dipropionate-d6 (CAS CATO-C4X-1437107)
- Betamethasone Impurity 31 (CAS CATO-C4X-143731)
- Betamethasone Dipropionate EP Impurity I (CAS 80163-83-3)
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Why CATO?
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