Etrasimod Impurity 71 CAS CATO-C4X-321471
| CAS No. | CATO-C4X-321471 |
| Molecular Formula | C12H13F3 |
| Molecular Weight | 214.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Etrasimod Impurity 71 (C12H13F3) contains fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies Etrasimod Impurity 71 (CAS CATO-C4X-321471), a pharmacopoeial impurity reference standard (molecular formula C12H13F3, MW 214.23 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C12H13F3 |
| Molecular Weight | 214.23 g/mol |
| Purity | ≥95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Etrasimod Standards
- Etrasimod Impurity 70 (CAS CATO-C4X-321470)
- Etrasimod Impurity 47 (CAS CATO-C4X-321447)
- Etrasimod Impurity 77 (CAS CATO-C4X-321477)
- Etrasimod Impurity 34 (CAS CATO-C4X-321434)
- Etrasimod Impurity 61 (CAS CATO-C4X-321461)
- Etrasimod Impurity 14 (CAS CATO-C4X-321414)
- Etrasimod impurity 22 (CAS CATO-C4X-321422)
- Etrasimod Impurity 58 (CAS 380350-42-5)
Recommended Standards
- 5-Oxo-5-(thiazol-2-ylamino)pentanoic acid (CAS 100377-67-1)
- Levodopa EP Impurity C-d3 (S-isomer) (L-3-O-Methyldopa-d3) (CAS 586954-09-8)
- Phenylsulfonylpropionic acid (CAS 10154-71-9)
- Flurbiprofen EP Impurity D (CAS 42771-79-9)
- Arbidol Impurity 22 (CAS CATO-C4X-112922)
- Landiolol Impurity 116 (CAS CATO-C4X-2621116)
- Methylprednisolone Impurity 56 (CAS CATO-C4X-191956)
- 7-Methylsaccharin (CAS 136526-27-7)
- 1-Amino-cyclobutanecarboxylic acid (6-trifluoromethoxybenzothiazol-2-yl)amide (CAS 2001592-19-2)
- 1-(5-Bromopyridin-3-yl)-4-chlorobutan-1-one (CAS 1823829-33-9)
- Methyl 2-(ethylamino)benzoate (CAS 17318-49-9)
- 3-methyl-2-oxo-2,3-dihydro-1,3-benzothiazole-6-sulfonamide (CAS 31263-89-5)
- 2, 6-Diphenyl-3-pyridinecarboxylic acid ethyl ester, 97% (CAS 162509-19-5)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
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