Atogepant Impurity 28 CAS 957122-46-2
| CAS No. | 957122-46-2 |
| Molecular Formula | C20H24N4O4Si |
| Molecular Weight | 412.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Atogepant Impurity 28 (CAS 957122-46-2) is a certified pharmaceutical impurity reference standard with the molecular formula C20H24N4O4Si and a molecular weight of 412.51 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Atogepant Impurity 28 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 412.51 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Atogepant Impurity 28 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 | C20H24N4O4Si |
| Molecular Weight | 412.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Atogepant Standards
- Atogepant Impurity 78 (CAS 1488326-89-1)
- Atogepant Impurity 4 (CAS CATO-C4X-32854)
- Atogepant Impurity 73 (CAS CATO-C4X-328573)
- Atogepant Impurity 21 (CAS 1375542-65-6)
- Atogepant Impurity 17 (CAS CATO-C4X-328517)
- Atogepant Impurity 18 (CAS CATO-C4X-328518)
- Atogepant Impurity 22 (CAS 1318253-26-7)
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Recommended Standards
- Brinzolamide Impurity 24 (CAS CATO-C4X-194024)
- N1-(2-Ethoxyphenyl)-N1-(2-(octyloxy)phenyl)oxalamide (CAS 105994-89-6)
- Mirabegron Impurity 56 (CAS CATO-C4X-103256)
- 2-Methyl-6-{2-[5-(toluene-4-sulfonyl)-thiophen-2-yl]-vinyl}-benzoic acid methyl ester (CAS 1171924-15-4)
- Finerenone Impurity 138 (CAS CATO-C4X-2880138)
- Azintamide Impurity 1 (CAS 3916-78-7)
- Estradiol Impurity 47 (CAS CATO-C4X-163647)
- 5-Bromo-6-(imidazolin-4-on-2-yl)aminoquinoxaline (CAS 182627-98-1)
- Epinastine Impurity 20 (CAS CATO-C4X-184020)
- Blonanserin Impurity 38 (CAS CATO-C4X-111038)
- 1,4-Dichloro-5-fluorophthalazine (CAS 23928-47-4)
- 3-Oxo-4-(3-chlorophenyl)butanoyl chloride (CAS 1989991-45-8)
- 2-[[4-(2,2,2-Trifluoroethoxy)benzoyl]amino]acetic acid (CAS 921623-36-1)
- Ephrin-A2-Selective YSA-Peptide (CAS 532441-10-4)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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