Betamethasone impurity 54 sodium salt CAS CATO-C4X-143754
| CAS No. | CATO-C4X-143754 |
| Molecular Formula | C22H29O8P |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 476.44 g/mol gives Betamethasone impurity 54 sodium salt distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Betamethasone impurity 54 sodium salt (CAS CATO-C4X-143754) is a certified pharmaceutical impurity reference standard with the molecular formula C22H29O8PHNa and a molecular weight of 476.44 g/mol.
Based on its molecular formula C22H29O8PHNa, Betamethasone impurity 54 sodium salt contains a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 476.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C22H29O8P HNa |
| Molecular Weight | 476.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Betamethasone Standards
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Recommended Standards
- Tedizolid Impurity 79 (CAS 1551262-90-8)
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- 3-Ethyl-2-pentene (CAS 816-79-5)
- N-(5-(Benzo[d][1,3]dioxol-5-yl)-1,3,4-oxadiazol-2-yl)butyramide (CAS 921900-04-1)
- 3-Fluoro-6-iodo-2-nitrotoluene (CAS 1803766-15-5)
- H-Met-D-Met-OH (CAS 89680-18-2)
- Acetamiprid-N-Desmethyl (CAS 190604-92-3)
- Liraglutide Impurity 19 TFA Salt (CAS CATO-C4X-199219)
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