Betamethasone Unknown Impurity 3 CAS CATO-CPS-2303001
| CAS No. | CATO-CPS-2303001 |
| Molecular Formula | C22H30FO8P |
| Molecular Weight | 472.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Betamethasone Unknown Impurity 3 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.
Betamethasone Unknown Impurity 3 (CAS CATO-CPS-2303001) is a certified pharmaceutical impurity reference standard with the molecular formula C22H30FO8P and a molecular weight of 472.44 g/mol.
Structurally, Betamethasone Unknown Impurity 3 (C22H30FO8P) contains a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.5, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 472.44 g/mol, it falls into the moderately-high-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C22H30FO8P |
| Molecular Weight | 472.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| 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) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Betamethasone Standards
- Betamethasone impurity 103 (CAS CATO-C4X-1437103)
- Betamethasone Impurity 132 (CAS CATO-C4X-1437132)
- Betamethasone Impurity 135 (CAS CATO-C4X-1437135)
- Betamethasone impurity 45 (CAS 1215899-29-8)
- Betamethasone impurity 55 (CAS 1202002-02-5)
- Betamethasone impurity 56 (CAS 1202002-00-3)
- Betamethasone impurity 96 (CAS CATO-C4X-143796)
- Betamethasone Acetate EP Impurity C (CAS 330157-05-6)
Recommended Standards
- 3-{[(4-chlorophenyl)methyl]sulfanyl}-5-({[(4-chlorophenyl)methyl]sulfanyl}methyl)-4-phenyl-4H-1,2,4-triazole (CAS 344269-64-3)
- Folic Acid Impurity 35 (CAS 2311-81-1)
- Folic acid impurity 58 (CAS CATO-C4X-139558)
- N-Nitroso Minocycline EP Impurity C (CAS 28698-93-3)
- Alectinib Impurity 39 (CAS CATO-C4X-283639)
- Bromfenac Impurity 76 (CAS 1623751-93-8)
- Anamorelin Impurity 2 (CAS 347391-97-3)
- 2-bromo-3-(1,3-dioxolan-2-yl)phenol (CAS 1160182-45-5)
- Trans-dimethyl 3-methylcyclopropane-1,2-dicarboxylate (CAS 28363-79-3)
- 3-Bromo-5-methoxy-1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazole (CAS 1338495-01-4)
- 1-Boc-pyrazole (CAS 219580-32-2)
- 1-Amino-3-bromopyridin-1-ium iodide (CAS 36474-98-3)
- 2-Nitro-5-phenylpyridin-3-amine (CAS 1097196-50-3)
- D-Ser32-Tirzepatide (CAS CATO-CPTD788677)
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