Etrasimod impurity 21 CAS CATO-C4X-321421
| CAS No. | CATO-C4X-321421 |
| Molecular Formula | C28H30F3NO3 |
| Molecular Weight | 485.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Etrasimod impurity 21 (CAS CATO-C4X-321421) is a certified pharmaceutical impurity reference standard with the molecular formula C28H30F3NO3 and a molecular weight of 485.54 g/mol.
Etrasimod impurity 21 (C28H30F3NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C28H30F3NO3 |
| Molecular Weight | 485.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Etrasimod Standards
- Etrasimod Impurity 62 (CAS 3053992-15-4)
- Etrasimod Impurity 12 (CAS CATO-C4X-321412)
- Etrasimod Impurity 68 (CAS CATO-C4X-321468)
- Etrasimod impurity 3 (CAS CATO-C4X-32143)
- Etrasimod Impurity 60 (CAS CATO-C4X-321460)
- Etrasimod Impurity 52 (CAS CATO-C4X-321452)
- Etrasimod Impurity 53 (CAS CATO-C4X-321453)
- Etrasimod impurity 18 (CAS CATO-C4X-321418)
Recommended Standards
- Dabigatran Methyl Ester Impurity (CAS 771459-37-1)
- 2-[2-(2-Phenyladamantan-2-yl)acetamido]ethyl 3-(trifluoromethyl)benzoate (CAS 400078-91-3)
- 2-{[(4-{[4-(Benzyloxy)phenyl]methoxy}phenyl)methyl][(3-fluorophenyl)methyl]amino}acetic acid (CAS 1253528-13-0)
- N-Ethyl Fluprostenol Carboxamide (CAS 1005193-64-5)
- Mirabegron Impurity 135 (CAS CATO-C4X-1032135)
- Erlotinib Impurity 13 (CAS 183322-18-1)
- Dotinurad Impurity 185 (CAS CATO-C4X-2494185)
- 3-Methoxy-3-(trifluoromethyl)piperidine (CAS 1354959-91-3)
- 2-Chloroethanesulfonyl chloride (CAS 1622-32-8)
- Methyl 3-Cyano-5-tert-butylbenzoate (CAS 936801-70-6)
- 1-((4-Bromophenyl)sulfonyl)piperidin-4-ol (CAS 937012-61-8)
- 3,4-dimethylpent-2-en-1-ol (CAS 1623076-33-4)
- [(2,3-Dihydro-benzo[1,4]dioxine-6-sulfonyl)-methyl-amino]-acetic acid (CAS 425659-61-6)
- Exenatide (CAS 141758-74-9（free base）)
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