Budesonide Impurity 26 CAS 77017-17-5
| CAS No. | 77017-17-5 |
| Molecular Formula | C21H26O5 |
| Molecular Weight | 358.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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 Budesonide Impurity 26.
Budesonide Impurity 26 (CAS 77017-17-5) is a certified pharmaceutical impurity reference standard with the molecular formula C21H26O5 and a molecular weight of 358.43 g/mol.
The molecular framework of Budesonide Impurity 26 (C21H26O5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Budesonide Impurity 26 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.
Physical & Chemical Properties
| Molecular Formula | C21H26O5 |
| Molecular Weight | 358.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related Budesonide Standards
- Budesonide Impurity 15 (CAS CATO-C4X-138915)
- Budesonide Impurity 18 (CAS CATO-C4X-138918)
- Budesonide Impurity 20 (CAS CATO-C4X-138920)
- Budesonide Impurity 47 (CAS CATO-C4X-138947)
- Budesonide Impurity 74 (CAS CATO-C4X-138974)
- Budesonide Impurity N2 (CAS 39672-76-9)
- Budesonide Impurity 58 (CAS CATO-C4X-138958)
- Budesonide Impurity 64 (CAS 69155-84-6)
Recommended Standards
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- Testosterone Impurity N11 (CAS 1963-03-7)
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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