Vilanterol Impurity 27 CAS 503068-65-3 (free base)
| CAS No. | 503068-65-3 (free base) |
| Molecular Formula | C24H33Cl2NO5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 774.78 g/mol gives Vilanterol Impurity 27 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Vilanterol Impurity 27 (CAS 503068-65-3 (free base)) is a certified pharmaceutical impurity reference standard with the molecular formula C24H33Cl2NO5C20H16O2 and a molecular weight of 774.78 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Vilanterol Impurity 27 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 774.78 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 27 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 | C24H33Cl2NO5 C20H16O2 |
| Molecular Weight | 774.78 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| 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
- Teneligliptin Impurity 47 (CAS CATO-C4X-176047)
- Cefmenoxime Impurity 11 (CAS CATO-C4X-147711)
- (Z)-Ceftazidime Impurity 36 (CAS CATO-C4X-121236)
- 4-Bromo-5-methylisothiazol-3(2H)-one (CAS 25629-53-2)
- 2-(2-((1-Methyl-1H-imidazol-2-yl)thio)ethyl)piperidine (CAS 1249515-23-8)
- 5-(trifluoromethyl)-1,3,4-oxadiazole-2-carbaldehyde (CAS 100305-92-8)
- (N-Dansyl)biocytinamidoethyl Methanethiosulfonate (CAS 1041392-69-1)
- 2,4,5-Trimethylbenzoic acid (CAS 528-90-5)
- 5-Methyl-4-nitrobenzo[c][1,2,5]thiadiazole (CAS 3152-87-2)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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