Vilanterol Impurity 7 CAS CATO-C4X-19357
| CAS No. | CATO-C4X-19357 |
| Molecular Formula | C15H21BrCl2O2 |
| Molecular Weight | 384.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Vilanterol Impurity 7 (CAS CATO-C4X-19357, C15H21BrCl2O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Vilanterol Impurity 7 (C15H21BrCl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C15H21BrCl2O2 |
| Molecular Weight | 384.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl/Br-containing |
Related Vilanterol Standards
- 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 67 (CAS CATO-C4X-193567)
- Vilanterol Impurity 91 (CAS CATO-C4X-193591)
- Vilanterol Impurity 33 (CAS CATO-C4X-193533)
- Vilanterol Impurity 34 (CAS 503070-64-2)
Recommended Standards
- Carfentrazone (free acid) (CAS 128621-72-7)
- 5-(Tributylstannyl)pyrazin-2-amine (CAS 446285-55-8)
- (5-(3,4-Dichlorophenyl)isoxazol-3-yl)methyl 2,6-difluorobenzoate (CAS 338777-05-2)
- [(1S)-1-[(7-bromo-2,3-dioxo-1,4-dihydroquinoxalin-5-yl)methylamino]ethyl]phosphonic acid (CAS 206648-13-7)
- Sunitinib Impurity 16 (CAS 56341-41-4)
- Flurbiprofen Impurity 46 (CAS CATO-C4X-144446)
- Ibrutinib Impurity 120 (CAS CATO-C4X-1064120)
- 1,3,5-trichloro-2-isothiocyanatobenzene 2,4,6-Trichlorophenyl isothiocyanate 22134-07-2 (CAS 22134-07-2)
- 4-Bromo-N-(tetrahydropyranyl)pyrazole, 97% (CAS 82099-98-7)
- N-benzyl-4-hydrazinyl-N-methylpyridine-3-sulfonamide (CAS 1352525-45-1)
- 2-{[(2,6-dichlorophenyl)methyl]sulfanyl}-5-[3-(1H-pyrrol-1-yl)thiophen-2-yl]-1,3,4-oxadiazole (CAS 478077-29-1)
- N-((3-Bromophenyl)(1H-indol-1-yl)methyl)acetamide (CAS 649740-13-6)
- 1-(3-Methoxypropyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 1249333-13-8)
- Liraglutide Impurity 21 TFA Salt (CAS CATO-C4X-199221)
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