Atogepant Impurity 76 CAS CATO-C4X-328576
| CAS No. | CATO-C4X-328576 |
| Molecular Formula | C19H19N3O3 |
| Molecular Weight | 337.37 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 Atogepant Impurity 76 (CAS CATO-C4X-328576), a pharmacopoeial impurity reference standard (molecular formula C19H19N3O3, MW 337.37 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Atogepant Impurity 76 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 337.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C19H19N3O3 |
| Molecular Weight | 337.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Atogepant Standards
- Atogepant Impurity N17 (CAS 1455358-16-3)
- Atogepant Impurity 35 (CAS 1456803-47-6)
- Atogepant Impurity 36 (CAS CATO-C4X-328536)
- Atogepant Impurity 85 (CAS 3003751-92-3)
- Atogepant Impurity 84 (CAS CATO-C4X-328584)
- Atogepant Impurity 29 (CAS 957122-45-1)
- Atogepant Impurity 3 (CAS 1455358-11-8)
- Atogepant Impurity 77 (CAS CATO-C4X-328577)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com