Umeclidinium Impurity 19 CAS 2253743-32-5
| CAS No. | 2253743-32-5 |
| Molecular Formula | C26H27NO |
| Molecular Weight | 369.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Umeclidinium Impurity 19 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.
CATO supplies Umeclidinium Impurity 19 (CAS 2253743-32-5), a pharmacopoeial impurity reference standard (molecular formula C26H27NO, MW 369.50 g/mol) used for the identification and quantification of trace impurities in APIs.
Umeclidinium Impurity 19 (C26H27NO) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C26H27NO |
| Molecular Weight | 369.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 1 |
Related Umeclidinium Standards
- Umeclidinium Impurity 18 (CAS CATO-C4X-133918)
- Umeclidinium Impurity 9 (CAS CATO-C4X-13399)
- Umeclidinium Impurity 10 (CAS 461648-39-5)
- Umeclidinium Impurity 2 (CAS CATO-C4X-13392)
- Umeclidinium Impurity 29 (CAS CATO-C4X-133929)
- Umeclidinium impurity 26 (CAS 1248400-28-3)
- Umeclidinium Impurity 16 (CAS 939900-20-6)
- Umeclidinium Bromide Impurity 25 (CAS 119102-52-2)
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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