Relugolix Impurity 21 CAS CATO-C4X-2429121
| CAS No. | CATO-C4X-2429121 |
| Molecular Formula | C29H30F2N6O4S |
| Molecular Weight | 596.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Relugolix Impurity 21 (CAS CATO-C4X-2429121) is a certified pharmaceutical impurity reference standard with the molecular formula C29H30F2N6O4S and a molecular weight of 596.65 g/mol.
Structurally, Relugolix Impurity 21 (C29H30F2N6O4S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 596.65 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C29H30F2N6O4S |
| Molecular Weight | 596.65 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Relugolix Standards
- Relugolix Impurity 77 (CAS CATO-C4X-242977)
- Relugolix Impurity 102 (CAS CATO-C4X-2429102)
- Relugolix Impurity 33 (CAS CATO-C4X-242933)
- Relugolix Impurity 191 (CAS CATO-C4X-2429191)
- Relugolix Impurity 39 (CAS 2814571-33-8)
- Relugolix Impurity 14 (CAS CATO-C4X-242914)
- Relugolix Impurity 204 (CAS CATO-C4X-2429204)
- Relugolix Impurity 79 (CAS CATO-C4X-242979)
Recommended Standards
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- Relugoli Impurity 143 (CAS CATO-C4X-2429143)
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- Clindamycin Impurity 18 (CAS CATO-C4X-134118)
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- Ethyl 4-iodo-3,5-dimethylbenzoate (CAS 1048677-10-6)
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