Vilanterol Impurity 42 CAS CATO-C4X-193542
| CAS No. | CATO-C4X-193542 |
| Molecular Formula | C17H25BrCl2O3 |
| Molecular Weight | 428.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Vilanterol Impurity 42 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.
CATO supplies Vilanterol Impurity 42 (CAS CATO-C4X-193542), a pharmacopoeial impurity reference standard (molecular formula C17H25BrCl2O3, MW 428.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C17H25BrCl2O3, Vilanterol Impurity 42 contains a steroid core, a hydroxyl group, an ether linkage, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 428.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C17H25BrCl2O3 |
| Molecular Weight | 428.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, keep sealed and dry |
| 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 77 (CAS CATO-C4X-193577)
- Vilanterol Impurity 37 (CAS 452339-70-7)
- Vilanterol Impurity 72 (CAS CATO-C4X-193572)
- Vilanterol Impurity 46 (CAS CATO-C4X-193546)
- Vilanterol Impurity 85 (CAS CATO-C4X-193585)
- Vilanterol Impurity 33 (CAS CATO-C4X-193533)
- Vilanterol Impurity 13 (CAS CATO-C4X-193513)
- Vilanterol Impurity 14 (CAS CATO-C4X-193514)
Recommended Standards
- N,1-bis(4-chlorophenyl)-6-oxo-4-(trifluoromethyl)-1,6-dihydropyridazine-3-carboxamide (CAS 477854-89-0)
- 2-Iodo-1-(phenylsulfonyl)-1H-pyrrolo[3,2-b]pyridine-5-carboxylic acid (CAS 1260383-06-9)
- N-(2-(2-Bromophenyl)benzo[d]oxazol-5-yl)-5-nitrofuran-2-carboxamide (CAS 329198-70-1)
- 5-Iodo-1-(phenylsulfonyl)-1H-pyrrolo-[2,3-b]pyridine-2-carboxylic acid (CAS 1346447-25-3)
- Acalabrutinib Impurity 3 (CAS CATO-C4X-30553)
- Baclofen impurity 13 (CAS CATO-C4X-101213)
- Lercanidipine Impurity 43 (CAS 528-75-6)
- 2-(2-(5-Isopropyl-1,3,4-oxadiazol-2-yl)-1H-indol-1-yl)acetonitrile (CAS 921549-63-5)
- 1-(2,4-Difluorobenzyl)-5-ethyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 1273926-41-2)
- tert-Butyl 2-iodo-3-methyl-3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridine-5-carboxylate (CAS 1393561-02-8)
- 1-(Piperidin-1-ylmethyl)indoline-2,3-dione (CAS 13129-69-6)
- 4,4'-(Ethyne-1,2-diyl)dianiline (CAS 6052-15-9)
- 4-Chloro-3-(trifluoromethyl)benzaldehyde (CAS 34328-46-6)
- Peptide-GMF (CAS CATO-CPTD788469)
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