Etrasimod Impurity 37 CAS 2863533-56-4
| CAS No. | 2863533-56-4 |
| Molecular Formula | C29H32F4N2O2 |
| Molecular Weight | 516.58 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 37 (CAS 2863533-56-4), a pharmacopoeial impurity reference standard (molecular formula C29H32F4N2O2, MW 516.58 g/mol) used for the identification and quantification of trace impurities in APIs.
Etrasimod Impurity 37 (C29H32F4N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C29H32F4N2O2 |
| Molecular Weight | 516.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; 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.) | 2003 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Etrasimod Standards
- Etrasimod Impurity 44 (CAS CATO-C4X-321444)
- Etrasimod Impurity 40 (CAS 2863533-12-2)
- Etrasimod Impurity 32 (CAS CATO-C4X-321432)
- Etrasimod Impurity 67 (CAS CATO-C4X-321467)
- Etrasimod Impurity 28 (CAS CATO-C4X-321428)
- Etrasimod impurity 17 (CAS CATO-C4X-321417)
- Etrasimod Impurity 74 (CAS CATO-C4X-321474)
- Etrasimod Impurity 36 (CAS 2863532-88-9)
Recommended Standards
- HO-PEG10-CH2COOH (CAS 2250056-53-0)
- (R)-1-(2-Oxo-1-(2-oxo-2-(o-tolyl)ethyl)-5-phenyl-2,3-dihydro-1H-benzo[e][1,4]diazepin-3-yl)-3-(m-tolyl)urea (CAS 145084-28-2)
- Fmoc-Phe(4-CH2NHBoc)-OH (CAS 204715-91-3)
- 1-Benzyl-3-{1-[2-(2-methylphenyl)-2-oxoethyl]-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl}urea (CAS 1796900-14-5)
- Levofloxacin impurity 74 (CAS CATO-C4X-137174)
- Alectinib Impurity 61 (CAS CATO-C4X-283661)
- Pyridoxine Impurity 7 (CAS 1385767-86-1)
- 4-Amino-n-(2-methylbutan-2-yl)benzamide hydrochloride (CAS 1193388-92-9)
- Norlaudanosoline Hydrobromide (CAS 16659-88-4)
- 2-Amino-N-(tert-butyl)-N'-(3-methoxybenzoyl)benzohydrazide (CAS 866009-70-3)
- 2-(3-Isopropoxyphenyl)quinoline-4-carbonyl chloride (CAS 1160264-68-5)
- 6,7-Dimethoxy-1-methylisoquinolin-3-amine (CAS 172421-58-8)
- Methacrylic Acid-d6 (stabilized with hydroquinone) (CAS 92140-95-9)
- Liraglutide(3-31)TFA Salt (CAS CATO-C4X-19921)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com