Enarodustat Impurity 19 CAS CATO-C4X-322819
| CAS No. | CATO-C4X-322819 |
| Molecular Formula | C20H22N4O4 |
| Molecular Weight | 382.41 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 Enarodustat Impurity 19.
As a process- or degradation-related impurity, Enarodustat Impurity 19 (CAS CATO-C4X-322819, C20H22N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Enarodustat Impurity 19 (C20H22N4O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
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 | C20H22N4O4 |
| Molecular Weight | 382.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 0.95 |
| 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 | 4 |
Related Enarodustat Standards
- Enarodustat Impurity 9 (CAS CATO-C4X-32289)
- Enarodustat Impurity 25 (CAS CATO-C4X-322825)
- Enarodustat Impurity 10 (CAS CATO-C4X-322810)
- Enarodustat Impurity 20 (CAS CATO-C4X-322820)
- Enarodustat Impurity 28 (CAS CATO-C4X-322828)
- Enarodustat Impurity 29 (CAS CATO-C4X-322829)
- Enarodustat Impurity 30 (CAS CATO-C4X-322830)
- Enarodustat Impurity 31 (CAS CATO-C4X-322831)
Recommended Standards
- Perampanel Impurity 12 (CAS 543699-60-1)
- Fmoc-β-Ala-D-Ala-OH (CAS CATO-CPTD788354)
- 7-ANCA Impurity 1 (CAS CATO-C4X-23151)
- Fmoc-D-Ala-D-Ala-OH (CAS CATO-CPTD788371)
- Captopril Impurity 26 (CAS 51161-88-7)
- Diclofenac impurity 13 (CAS CATO-C4X-161413)
- Tegoprazan Impurity 127 (CAS CATO-C4X-2297127)
- N-(2-methanesulfonylethyl)cyclopropanamine (CAS 947723-53-7)
- N-[3,5-di(trifluoromethyl)phenyl]-N'-(1,2,2-trichlorovinyl)urea (CAS 646989-41-5)
- 5-formylpyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 1368168-29-9)
- 3-(tert-Butyl)-5-(methylthio)phenol (CAS 1243456-24-7)
- 3-Isobutylphenol (CAS 30749-25-8)
- 4-Amino-5-pyrimidinemethanol (CAS 7730-23-6)
- Experimental Allergic Encephalitogenic Peptide (CAS 29705-92-8)
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