Vilanterol Impurity 31 CAS CATO-C4X-193531
| CAS No. | CATO-C4X-193531 |
| Molecular Formula | C21H35NO4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Vilanterol Impurity 31 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Vilanterol Impurity 31 (CAS CATO-C4X-193531) is a certified pharmaceutical impurity reference standard with the molecular formula C21H35NO4C20H16O2 and a molecular weight of 653.86 g/mol.
Vilanterol Impurity 31 (C21H35NO4C20H16O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 manufactures Vilanterol Impurity 31 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 | C21H35NO4 C20H16O2 |
| Molecular Weight | 653.86 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Vilanterol Standards
- Vilanterol impurity 90 (CAS 1027529-99-2)
- Vilanterol Impurity 54 HCI (CAS 1463889-71-5)
- Vilanterol Impurity 88 (CAS 1582675-85-1)
- Vilanterol Impurity 5 (CAS 1582675-85-1（free base）)
- Vilanterol-d4 Triphenylacetate (CAS 2021249-10-3(non-labelled))
- Vilanterol Impurity 15 (CAS 208925-08-0)
- Vilanterol Impurity 86 (CAS 2514696-13-8)
- Vilanterol Impurity 10 HCl (CAS 2514696-13-8（free base）)
Recommended Standards
- Regorafenib Impurity 15 (CAS 1343498-72-5)
- Epinastine Impurity 44 Fumarate (CAS 127785-96-0)
- Ruxolitinib Impurity 57 (CAS CATO-C4X-205857)
- 6-Methyl-5-phenylpyrimidin-4-amine (CAS 857435-92-8)
- 4-((4-(2-Ethylpiperidin-1-yl)phenyl)amino)-4-oxobutanoic acid (CAS 842970-12-1)
- 1-Methyl-5-(thiophen-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 869901-15-5)
- (3-Methyl-1,1-dioxidothietan-3-yl)methanesulfonyl chloride (CAS 2091110-80-2)
- tert-Butyl 3-iodo-5-methoxy-1H-indazole-1-carboxylate (CAS 290368-03-5)
- N-[2-(2-Dimethylamino-5-trifluoromethyl-pyridin-3-yl)-phenyl]-acetamide (CAS 1311279-39-6)
- Liraglutide(13-31)TFA Salt (CAS CATO-C4X-19929)
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