Umeclidinium Impurity 2 CAS CATO-C4X-13392
| CAS No. | CATO-C4X-13392 |
| Molecular Formula | C20H23NO |
| Molecular Weight | 293.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Umeclidinium Impurity 2 (CAS CATO-C4X-13392), a pharmacopoeial impurity reference standard (molecular formula C20H23NO, MW 293.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Umeclidinium Impurity 2 (C20H23NO) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 293.40 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Umeclidinium Impurity 2 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 | C20H23NO |
| Molecular Weight | 293.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Umeclidinium Standards
- Umeclidinium Impurity 10 (CAS 461648-39-5)
- Umeclidinium Impurity 9 (CAS CATO-C4X-13399)
- Umeclidinium impurity 26 (CAS 1248400-28-3)
- Umeclidinium Impurity 18 (CAS CATO-C4X-133918)
- Umeclidinium Impurity 19 (CAS 2253743-32-5)
- Umeclidinium Impurity 16 (CAS 939900-20-6)
- Umeclidinium Bromide Impurity 25 (CAS 119102-52-2)
- Umeclidinium Impurity 1 (CAS 1509910-91-1)
Recommended Standards
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