Betamethasone Impurity 43 CAS 4735-65-3
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 4735-65-3 |
| Molecular Formula | C24H31BrO6 |
| Molecular Weight | 495.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Betamethasone Impurity 43 (CAS 4735-65-3) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C24H31BrO6. Molecular weight: 495.40 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C24H31BrO6 |
| Molecular Weight | 495.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
Related Betamethasone Standards
- Betamethasone impurity 52 (CAS 97168-90-6)
- Betamethasone impurity 67 (CAS 13796-49-1)
- Betamethasone Impurity 144 (CAS CATO-C4X-1437144)
- Betamethasone benzoate (CAS 22298-29-9)
- Betamethasone Impurity 80 (CAS 25092-10-8)
- Betamethasone Valerate EP Impurity H (CAS 52619-18-8)
- Betamethasone Succinate (CAS 27297-42-3)
- Betamethasone Dipropionate EP Impurity D (CAS 5514-81-8)
Recommended Standards
- Bromodesonide (CAS CATO-C4X-13013)
- Aprepitant Impurity 70 (CAS 419574-15-5)
- N-(2,4-Difluorophenyl)-1-methyl-3-(trifluoromethyl)-5-({[3-(trifluoromethyl)phenyl]methyl}sulfanyl)-1H-pyrazole-4-carboxamide (CAS 321553-24-6)
- Vonoprazan Fumarate Impurity 15 (CAS 636-73-7)
- Levocarnitine Impurity 21 (CAS CATO-C4X-129221)
- Mabuterol Impurity 4 (CAS CATO-C4X-14544)
- 5-(3,4-Dimethoxyphenyl)-4h-1,2,4-triazol-3-amine (CAS 289710-95-8)
- 2-Fluoro-5-(3-fluoropiperidin-4-yl)aniline dihydrochloride (CAS 2306262-19-9)
- N-Benzyl-5-bromopyrimidin-2-amine (CAS 38373-55-6)
- Protein Kinase C (alpha) Peptide (CAS 159939-84-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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