Etrasimod impurity 22 CAS CATO-C4X-321422
| CAS No. | CATO-C4X-321422 |
| Molecular Formula | C13H19NO3 |
| Molecular Weight | 237.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Etrasimod impurity 22 (CAS CATO-C4X-321422), a pharmacopoeial impurity reference standard (molecular formula C13H19NO3, MW 237.29 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Etrasimod impurity 22 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 237.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C13H19NO3 |
| Molecular Weight | 237.29 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Etrasimod Standards
- Etrasimod Impurity 14 (CAS CATO-C4X-321414)
- Etrasimod Impurity 58 (CAS 380350-42-5)
- Etrasimod Impurity 34 (CAS CATO-C4X-321434)
- Etrasimod Impurity 61 (CAS CATO-C4X-321461)
- Etrasimod Impurity 48 (CAS CATO-C4X-321448)
- Etrasimod Impurity 77 (CAS CATO-C4X-321477)
- Etrasimod Impurity 23 (CAS CATO-C4X-321423)
- Etrasimod Impurity 70 (CAS CATO-C4X-321470)
Recommended Standards
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- Benzyl (S)-(morpholin-3-ylmethyl)carbamate hydrochloride (CAS 1881275-75-7)
- 3X Flag Peptide trifluoroacetate salt (CAS 402750-12-3)
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