Atogepant Impurity 65 CAS CATO-C4X-328565
| CAS No. | CATO-C4X-328565 |
| Molecular Formula | C21H23F9N2O3 |
| Molecular Weight | 522.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Atogepant Impurity 65 (CAS CATO-C4X-328565), a pharmacopoeial impurity reference standard (molecular formula C21H23F9N2O3, MW 522.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H23F9N2O3, Atogepant Impurity 65 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 522.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C21H23F9N2O3 |
| Molecular Weight | 522.40 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Atogepant Standards
- Atogepant Impurity 59 (CAS CATO-C4X-328559)
- Atogepant Impurity 60 (CAS CATO-C4X-328560)
- Atogepant Impurity 61 (CAS CATO-C4X-328561)
- Atogepant Impurity 62 (CAS CATO-C4X-328562)
- Atogepant Impurity 63 (CAS CATO-C4X-328563)
- Atogepant Impurity 64 (CAS CATO-C4X-328564)
- Atogepant Impurity 66 (CAS CATO-C4X-328566)
- Atogepant Impurity 81 (CAS CATO-C4X-328581)
Recommended Standards
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- gamma-Rubromycin (CAS 27267-71-6)
- Bendamustine Impurity 22 (CAS 1869075-89-7)
- [(2R,3R,4R,5R)-2,3,4,5,6-pentahydroxyhexyl] 4-[5-[bis(2-chloroethyl)amino]-1-methylbenzimidazol-2-yl]butanoate (CAS 869075-89-7)
- Baricitinib Impurity 131 (CAS 90971-86-1)
- Apixaban Impurity N2 (CAS 940-11-4)
- Treprostinil Impurity 14 (CAS CATO-C4X-211614)
- 4-(Benzyloxy)-2,5-dichlorophenol (CAS 6172-34-5)
- 2-[(4-{naphtho[2,1-b]furan-2-yl}pyrimidin-2-yl)sulfanyl]acetonitrile (CAS 866144-49-2)
- 8-Chloronaphtho[2,1-b]benzofuran (CAS 1647008-46-5)
- Piperidin-4-yl acetate (CAS 73775-92-5)
- 1-(Phenylsulfonyl)-1H-indole-2-carboxamide (CAS 540740-47-4)
- 5-(4-Chlorophenyl)-6-(p-tolyl)pyrimidine-2,4(1H,3H)-dione (CAS 613667-39-3)
- D-Pro38-Tirzepatide (CAS CATO-CPTD788901)
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