Umeclidinium Impurity 7 CAS CATO-C4X-13397
| CAS No. | CATO-C4X-13397 |
| Molecular Formula | C19H28NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Umeclidinium Impurity 7 (CAS CATO-C4X-13397), a pharmacopoeial impurity reference standard (molecular formula C19H28NO3Br, MW 398.34 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, Umeclidinium Impurity 7 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 398.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Umeclidinium Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H28NO3 Br |
| Molecular Weight | 398.34 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Umeclidinium Standards
- Umeclidinium Bromide Impurity 25 (CAS 119102-52-2)
- Umeclidinium impurity 26 (CAS 1248400-28-3)
- Umeclidinium Impurity 1 (CAS 1509910-91-1)
- Umeclidinium impurity 22 (CAS 17229-17-3)
- Umeclidinium Impurity 15 (CAS 2230024-91-4(free base))
- Umeclidinium Impurity 19 (CAS 2253743-32-5)
- Umeclidinium Impurity 13 (CAS 2253743-36-9)
- Umeclidinium Impurity 11 (CAS 2253743-38-1)
Recommended Standards
- Pomalidomide Impurity 27 HCl (CAS CATO-C4X-135427)
- Zolpidem EP Impurity F (CAS 402470-91-1)
- Clindamycin Impurity 141 (CAS CATO-C4X-1341141)
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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