Vilanterol Impurity 73 CAS CATO-C4X-193573
| CAS No. | CATO-C4X-193573 |
| Molecular Formula | C24H33Cl2NO5 |
| Molecular Weight | 486.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Vilanterol Impurity 73 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Vilanterol Impurity 73 (CAS CATO-C4X-193573), a pharmacopoeial impurity reference standard (molecular formula C24H33Cl2NO5, MW 486.43 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Vilanterol Impurity 73 (C24H33Cl2NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 486.43 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Vilanterol Impurity 73 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 |
| Molecular Weight | 486.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Vilanterol Standards
- Vilanterol (CAS 503068-34-6)
- Vilanterol Racemate (CAS 957997-33-0)
- Vilanterol Impurity 74 (CAS CATO-C4X-193574)
- Vilanterol Impurity 80 (CAS 2514963-34-7)
- Vilanterol Impurity 86 (CAS 2514696-13-8)
- Vilanterol Impurity 71 (CAS CATO-C4X-193571)
- Vilanterol Impurity 22 (CAS CATO-C4X-193522)
- Vilanterol Impurity 92 (CAS CATO-C4X-193592)
Recommended Standards
- 2-[2-(2-Phenyladamantan-2-yl)acetamido]ethyl 2,4-dichlorobenzoate (CAS 400078-90-2)
- LPA2 Antagonist 1 (CAS 1017606-66-4)
- (5E)-3-Benzyl-5-({4-[(2,4-dichlorophenyl)methoxy]phenyl}methylidene)-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 300386-79-2)
- 3,3',3''-((1,3,5-Triazine-2,4,6-triyl)tris(azanediyl))tribenzoic acid (CAS 1383425-68-0)
- Resmetirom Impurity 40 (CAS 2947651-03-6)
- Posaconazole Impurity 35 (CAS 1370190-85-4)
- Levodopa Impurity 19 (CAS 28305-04-6)
- 2,2-Difluoro-6-iodobenzo[d][1,3]dioxol-5-amine (CAS 1000802-68-5)
- 9H,9'H-2,2'-Bicarbazole (CAS 350706-55-7)
- 4-Methoxy-2-(1-methylhydrazinyl)nicotinonitrile (CAS 338412-37-6)
- 3-Bromo-1-methyl-1H-1,2,4-triazol-5-amine (CAS 1365957-74-9)
- N-Benzyl-3-(4-hydroxyphenyl)propanamide (CAS 74454-78-7)
- Rel-(2R,3S)-1-((benzyloxy)carbonyl)-2-methylpiperidine-3-carboxylic acid (CAS 1187927-04-3)
- Semaglutide impurity 101 (CAS CATO-C4X-2226101)
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