Vilanterol Impurity 79 CAS CATO-C4X-193579
| CAS No. | CATO-C4X-193579 |
| Molecular Formula | C7H5BrCl2 |
| Molecular Weight | 239.92 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Vilanterol Impurity 79 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Vilanterol Impurity 79 (CAS CATO-C4X-193579), a pharmacopoeial impurity reference standard (molecular formula C7H5BrCl2, MW 239.92 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Vilanterol Impurity 79 (C7H5BrCl2) contains chlorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 239.92 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H5BrCl2 |
| Molecular Weight | 239.92 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| 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 1 (CAS CATO-C4X-19351)
- Vilanterol Impurity 2 (CAS CATO-C4X-19352)
- Vilanterol Impurity 3 (CAS 452340-96-4)
- Vilanterol Impurity 4 (CAS CATO-C4X-19354)
- Vilanterol Impurity 41 (CAS 452339-73-0)
- Vilanterol Impurity 44 (CAS CATO-C4X-193544)
- Vilanterol Impurity 69 (CAS 2514942-86-8)
- Vilanterol impurity 90 (CAS 1027529-99-2)
Recommended Standards
- 5-Bromo-2-chlorobenzyl Chloride (CAS 928758-19-4)
- 1,4-Dibromobenzene-d4 (CAS 4165-56-4)
- 5-Bromo-2,4-dichlorotoluene (CAS 85072-41-9)
- 1,6-Dibromo-cyclohexene (CAS 17202-32-3)
- Ticarcillin EP Impurity A (CAS CATO-C4X-17631)
- Azilsartan Impurity 122 (CAS CATO-C4X-1096122)
- Prucalopride Impurity 25 (CAS 149466-67-1)
- (E)-2-Hydroxy-3-(4-hydroxy-3-methylbut-2-en-1-yl)naphthalene-1,4-dione (CAS 523-34-2)
- (3,5-dimethylphenyl)magnesium bromide 3,5-Dimethylphenylmagnesium bromide 34696-73-6 (CAS 34696-73-6)
- 1'-(Tert-butoxycarbonyl)-3H-spiro[isobenzofuran-1,4'-piperidine]-3-carboxylic acid (CAS 937254-55-2)
- Isofuranodiene (CAS 57566-47-9)
- 3-Chloro-4-(1h-pyrazol-1-yl)aniline (CAS 926218-03-3)
- Boc-D-Phe-Phe (CAS 125511-90-2)
- Amyloid Precursor Frameshift Mutant C-Terminal Peptide trifluoroacetate salt (CAS 189125-14-2)
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