Relugolix Impurity 4 CAS CATO-C4X-24294
| CAS No. | CATO-C4X-24294 |
| Molecular Formula | C27H24F2N6O3S |
| Molecular Weight | 550.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Relugolix Impurity 4 (C27H24F2N6O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Relugolix Impurity 4 (CAS CATO-C4X-24294) is a certified pharmaceutical impurity reference standard with the molecular formula C27H24F2N6O3S and a molecular weight of 550.58 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 | C27H24F2N6O3S |
| Molecular Weight | 550.58 g/mol |
| Purity | >95% |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Relugolix Standards
- Relugolix Impurity 37 (CAS 1589503-93-4)
- Relugolix Impurity 12 (CAS CATO-C4X-242912)
- Relugolix Impurity 10 (CAS CATO-C4X-242910)
- Relugolix Impurity 27 (CAS CATO-C4X-242927)
- Relugolix Impurity 207 (CAS CATO-C4X-2429207)
- Relugolix Impurity 67 (CAS CATO-C4X-242967)
- Relugolix Impurity 76 (CAS CATO-C4X-242976)
- Relugolix Impurity N4 (CAS 1589503-97-8)
Recommended Standards
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