Vilanterol Impurity 91 CAS CATO-C4X-193591
| CAS No. | CATO-C4X-193591 |
| Molecular Formula | C17H25Cl2NO4 |
| Molecular Weight | 378.29 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.
Vilanterol Impurity 91 (CAS CATO-C4X-193591) is a certified pharmaceutical impurity reference standard with the molecular formula C17H25Cl2NO4 and a molecular weight of 378.29 g/mol.
Based on its molecular formula C17H25Cl2NO4, Vilanterol Impurity 91 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 378.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Vilanterol Impurity 91 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 | C17H25Cl2NO4 |
| Molecular Weight | 378.29 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Vilanterol Standards
- Vilanterol Impurity 67 (CAS CATO-C4X-193567)
- Vilanterol Impurity 13 (CAS CATO-C4X-193513)
- Vilanterol Impurity 14 (CAS CATO-C4X-193514)
- Vilanterol Impurity 40 (CAS 503070-57-3)
- Vilanterol Impurity 6 (CAS CATO-C4X-19356)
- Vilanterol Impurity 7 (CAS CATO-C4X-19357)
- Vilanterol Impurity 34 (CAS 503070-64-2)
- Vilanterol Impurity 70 (CAS CATO-C4X-193570)
Recommended Standards
- Pyrene 1,3,6,8-tetracarboxylic acid (CAS 861023-19-0)
- 1-(4-Fluorophenoxy-d4)-2-(3,5-dinitrobenzoate)3-butyn-2-ol (CAS 1346599-32-3)
- PEG2-bis(phosphonic acid diethyl ester) (CAS 500347-73-9)
- 3-Methoxy-4-((3-(3-(trifluoromethyl)phenyl)-1,2,4-oxadiazol-5-yl)methoxy)benzaldehyde (CAS 1387998-13-1)
- Entacapone EP Impurity I (CAS 1364322-42-8)
- Fluralaner Impurity 7 (CAS CATO-C4X-21807)
- Meclizine Impurity N2 (CAS 713071-37-5)
- 7-Phenoxy-3-phenyl-2,3-dihydro-1H-inden-1-ol (CAS 337921-74-1)
- n-Isobutyl-3-isopropyl-1,2,4-oxadiazol-5-amine (CAS 1249792-53-7)
- 2-Chloro-1-phenyl-1H-benzo[d]imidazole (CAS 24547-45-3)
- 5-Fluoro-2,3-dihydroisoquinolin-4(1H)-one (CAS 2864383-49-1)
- Osteogenic Growth Peptide (CAS 132996-61-3)
- Ethyl 2-aminobenzo[d]thiazole-7-carboxylate (CAS 677304-89-1)
- HA Peptide (CAS 92000-76-5)
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