Siponimod impurity 23 CAS CATO-C4X-247223
| CAS No. | CATO-C4X-247223 |
| Molecular Formula | C25H31F3N2O |
| Molecular Weight | 432.52 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.
CATO supplies Siponimod impurity 23 (CAS CATO-C4X-247223), a pharmacopoeial impurity reference standard (molecular formula C25H31F3N2O, MW 432.52 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C25H31F3N2O, Siponimod impurity 23 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 432.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C25H31F3N2O |
| Molecular Weight | 432.52 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 |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Siponimod Standards
- Siponimod impurity 27 (CAS 800379-63-9)
- Siponimod impurity 21 (CAS CATO-C4X-247221)
- Siponimod impurity 25 (CAS 800380-45-4)
- Siponimod Impurity 12 (CAS CATO-C4X-247212)
- Siponimod Impurity 37 (CAS CATO-C4X-247237)
- Siponimod (CAS 1230487-00-9)
- Siponimod Impurity 30 (CAS CATO-C4X-247230)
- Siponimod Impurity 34 (CAS 2768181-14-0)
Recommended Standards
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- Norfloxacin Impurity 34 (CAS CATO-C4X-146834)
- (3-(Azetidin-1-ylmethyl)phenyl)(4-bromo-2-fluorophenyl)methanone (CAS 898771-97-6)
- 2-(Chloromethyl)-4,6-dimethylpyrimidine hydrochloride (CAS 1956341-63-1)
- Semaglutide impurity 268 (CAS CATO-C4X-2226268)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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