Roxadustat Impurity 19 CAS CATO-C4X-221319
| CAS No. | CATO-C4X-221319 |
| Molecular Formula | C22H21N3O6 |
| Molecular Weight | 423.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C22H21N3O6, Roxadustat Impurity 19 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 423.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Roxadustat Impurity 19 (CAS CATO-C4X-221319) is a certified pharmaceutical impurity reference standard with the molecular formula C22H21N3O6 and a molecular weight of 423.42 g/mol.
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.
CATO manufactures Roxadustat Impurity 19 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C22H21N3O6 |
| Molecular Weight | 423.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Roxadustat Standards
- Roxadustat impurity (CAS CATO-C4X-2213113)
- Roxadustat Impurity 97 (CAS CATO-C4X-221397)
- Roxadustat Impurity 151 (CAS CATO-C4X-2213151)
- Roxadustat Impurity 16 (CAS CATO-C4X-221316)
- Roxadustat Impurity 153 (CAS CATO-C4X-2213153)
- Roxadustat Impurity N8 (CAS 808116-62-3)
- Roxadustat Impurity 145 (CAS CATO-C4X-2213145)
- Roxadustat impurity 120 (CAS CATO-C4X-2213120)
Recommended Standards
- 4-[[4-Oxo-2-thioxo-3-[3-(trifluoromethyl)benzyl]thiazolidin-5-ylidene]methyl]benzoic Acid (CAS 1073612-91-5)
- Cefdinir Impurity 28 (CAS CATO-C4X-121028)
- 2-Phenyl-N-(2-((3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl)methyl)phenyl)-2H-1,2,3-triazole-4-carboxamide (CAS 1704508-44-0)
- Erlotinib impurity 139 (CAS 2218487-28-4)
- Terbinafine Impurity 49 (CAS CATO-C4X-133849)
- Biotin Impurity 36 (CAS 1535184-53-2)
- Methylprednisolone Impurity 1 (CAS CATO-C4X-19191)
- (3R,4S)-4-(Dimethylamino)tetrahydrofuran-3-ol (CAS 1932539-57-5)
- 6,8-Dichloro-2-tetralone (CAS 113075-86-8)
- (S)-2-(1-aminoethyl)-4-methoxyphenol (CAS 180683-46-9)
- Ethyl 5-bromo-6-chloropyrimidine-4-carboxylate (CAS 1097250-94-6)
- 4-Chloro-3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 2121513-37-7)
- (S)-3-Amino-3-cyclopentylpropanoic acid hydrochloride (CAS 1956435-02-1)
- D-Pro31-Tirzepatide (CAS CATO-CPTD788905)
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