Etrasimod impurity 1 CAS 1206123-36-5
| CAS No. | 1206123-36-5 |
| Molecular Formula | C27H28F3NO3 |
| Molecular Weight | 471.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C27H28F3NO3, Etrasimod impurity 1 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 471.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Etrasimod impurity 1 (CAS 1206123-36-5) is a certified pharmaceutical impurity reference standard with the molecular formula C27H28F3NO3 and a molecular weight of 471.51 g/mol.
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.
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 | C27H28F3NO3 |
| Molecular Weight | 471.51 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 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Etrasimod Standards
- Etrasimod Impurity 75 (CAS CATO-C4X-321475)
- Etrasimod Impurity 30 (CAS 1643579-27-4)
- Etrasimod impurity 19 (CAS CATO-C4X-321419)
- Etrasimod Impurity 26 (CAS CATO-C4X-321426)
- Etrasimod Impurity 27 (CAS CATO-C4X-321427)
- Etrasimod Impurity 57 (CAS CATO-C4X-321457)
- Etrasimod Impurity 42 (CAS 2863532-89-0)
- Etrasimod Impurity 51 (CAS CATO-C4X-321451)
Recommended Standards
- Cefovecin Impurity 6 (CAS CATO-C4X-30356)
- Cefamandole Adipic Acid Impurity (CAS CATO-C4X-122128)
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- Dabigatran (CAS 211914-51-1)
- Ivabradine Impurity 67 (CAS 2512208-76-1)
- Rivaroxaban EP Impurity A (CAS 865479-71-6)
- Azacitidine Impurity 25 (CAS CATO-C4X-138825)
- Sitagliptin Impurity 107 (CAS 89124-06-1)
- 4-Chloro-N'-(4,6-dimethyl-3-(1H-pyrrol-1-yl)thieno[2,3-b]pyridine-2-carbonyl)benzenesulfonohydrazide (CAS 478029-15-1)
- Lumateperone Impurity 29 (4-Methylbenzenesulfonate) (CAS CATO-C4X-220129)
- HO-PEG10-CH2COOH (CAS 2250056-53-0)
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- 4-(2-(Chloromethyl)pentyl)thiazole (CAS 1483019-91-5)
- [D-His1]-Semaglutide (CAS CATO-C4X-2226127)
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