Vilanterol Impurity 83 CAS CATO-C4X-193583
| CAS No. | CATO-C4X-193583 |
| Molecular Formula | C25H31Cl2NO6 |
| Molecular Weight | 512.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 512.42 g/mol gives Vilanterol Impurity 83 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Vilanterol Impurity 83 (CAS CATO-C4X-193583, C25H31Cl2NO6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Vilanterol Impurity 83 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 512.42 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C25H31Cl2NO6 |
| Molecular Weight | 512.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Vilanterol Standards
- Vilanterol Impurity 12 (CAS CATO-C4X-193512)
- Vilanterol Impurity 88 (CAS 1582675-85-1)
- Vilanterol Impurity 92 (CAS CATO-C4X-193592)
- Vilanterol Impurity 22 (CAS CATO-C4X-193522)
- Vilanterol Impurity 32 (CAS CATO-C4X-193532)
- Vilanterol Impurity C05 (CAS 503068-37-9)
- Vilanterol Impurity 48 (CAS CATO-C4X-193548)
- Vilanterol (CAS 503068-34-6)
Recommended Standards
- (R)-2-((R)-1-Iodo-4-(trityloxy)butyl)tetrahydrofuran (CAS 651057-16-8)
- 6-(2,6-Dichlorophenyl)-2-((4-(2-(diethylamino)ethoxy)phenyl)amino)-8-methylpyrido[2,3-d]pyrimidin-7(8H)-one (CAS 185039-89-8)
- Iclepertin (CAS 1421936-85-7)
- 1,1,2,2-Tetrakis(4-nitrophenyl)ethene (CAS 47797-98-8)
- Irbesartan impurity 36 (CAS 17193-28-1)
- Melatonin Impurity 26 (CAS CATO-C4X-229226)
- Revefenacin impurity 88 (CAS CATO-C4X-203188)
- 1-(2-Amino-3-ethoxyphenyl)ethanone (CAS 106634-70-2)
- Methyl 9-(3-phenyl-4,5-dihydroisoxazol-5-yl)nonanoate (CAS 394724-67-5)
- 5-Bromo-4-fluoro-3-nitropyridin-2-amine (CAS 1935121-11-1)
- Ethyl 7-(2,4-dimethoxyphenyl)-7-oxoheptanoate (CAS 898758-20-8)
- 2-Chloro-1-(3-(naphthalen-2-yl)-5-phenyl-4,5-dihydro-1h-pyrazol-1-yl)ethan-1-one (CAS 380196-86-1)
- 1-((2-Methoxy-5-methylphenyl)sulfonyl)piperazine (CAS 460046-39-3)
- Semaglutide impurity 94 (CAS CATO-C4X-222694)
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