Vilanterol Impurity 71 CAS CATO-C4X-193571
| CAS No. | CATO-C4X-193571 |
| Molecular Formula | C23H31Cl2NO5 |
| Molecular Weight | 472.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Vilanterol Impurity 71 (CAS CATO-C4X-193571) is a certified pharmaceutical impurity reference standard with the molecular formula C23H31Cl2NO5 and a molecular weight of 472.40 g/mol.
Structurally, Vilanterol Impurity 71 (C23H31Cl2NO5) 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 472.40 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C23H31Cl2NO5 |
| Molecular Weight | 472.40 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 Impurity 86 (CAS 2514696-13-8)
- Vilanterol (CAS 503068-34-6)
- Vilanterol Racemate (CAS 957997-33-0)
- Vilanterol Impurity 73 (CAS CATO-C4X-193573)
- Vilanterol Impurity 74 (CAS CATO-C4X-193574)
- Vilanterol Impurity 80 (CAS 2514963-34-7)
- Vilanterol Impurity 46 (CAS CATO-C4X-193546)
- Vilanterol Impurity 72 (CAS CATO-C4X-193572)
Recommended Standards
- 4-(4-Bromophenyl)-3-((naphthalen-1-ylmethyl)thio)-5-phenyl-4H-1,2,4-triazole (CAS 763139-03-3)
- Fluzoparib (CAS 1358715-18-0)
- (-)-Epigallocatechin 3-(4"-O-methyl)gallate (CAS 224434-07-5)
- L-(+)-N-[p-[[(2-Amino-7,8-dihydro-4-hydroxy-6-pteridinyl)methyl]nitrosamino]benzoyl]-glutamic Acid (CAS 15574-33-1)
- erythro-Hydro Bupropion-d9 HCl（enantiomer） (CAS CATO-C4X-120365)
- Empagliflozin Impurity 92 (CAS CATO-C4X-106592)
- Ramelteon Impurity 50 (CAS CATO-C4X-262250)
- Isoaloeresin D (CAS 181489-99-6)
- 6-[4-(4-fluorophenyl)piperazin-1-yl]-n'-hydroxypyridine-3-carboximidamide (CAS 1375476-92-8)
- Rel-(2R,3R)-3-(methoxycarbonyl)oxirane-2-carboxylic acid (CAS 119240-65-2)
- 2,3,4,4＇-Tetrahydroxybenzophenone (CAS 31127-54-5)
- 3-(4-Bromo-2-fluorophenyl)-1h-1,2,4-triazol-5-amine (CAS 1016771-38-2)
- 1-methyl-2-(pyrrolidin-2-yl)-1H-1,3-benzodiazole dihydrochloride (CAS 1193389-65-9)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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