Relugolix Impurity 20 CAS 2767571-66-2
| CAS No. | 2767571-66-2 |
| Molecular Formula | C26H26F2N6O2S |
| Molecular Weight | 524.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Relugolix Impurity 20.
Relugolix Impurity 20 (CAS 2767571-66-2) is a certified pharmaceutical impurity reference standard with the molecular formula C26H26F2N6O2S and a molecular weight of 524.59 g/mol.
Structurally, Relugolix Impurity 20 (C26H26F2N6O2S) 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 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 524.59 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Relugolix Impurity 20 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C26H26F2N6O2S |
| Molecular Weight | 524.59 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Relugolix Standards
- Relugolix Impurity 194 (CAS CATO-C4X-2429194)
- Relugolix Impurity 187 (CAS CATO-C4X-2429187)
- Relugolix Impurity 52 (CAS CATO-C4X-242952)
- Relugolix Impurity 32 (CAS CATO-C4X-242932)
- Relugolix Impurity 211 (CAS CATO-C4X-2429211)
- Relugolix Impurity 47 (CAS CATO-C4X-242947)
- Relugolix Impurity 19 (CAS 2591260-09-0)
- Relugolix Impurity 189 (CAS CATO-C4X-2429189)
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