Dotinurad Impurity 19 CAS CATO-C4X-249419
| CAS No. | CATO-C4X-249419 |
| Molecular Formula | C21H12Cl3NO5S |
| Molecular Weight | 496.75 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dotinurad Impurity 19 (CAS CATO-C4X-249419), a pharmacopoeial impurity reference standard (molecular formula C21H12Cl3NO5S, MW 496.75 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H12Cl3NO5S, Dotinurad Impurity 19 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 496.75 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.
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 Dotinurad 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 | C21H12Cl3NO5S |
| Molecular Weight | 496.75 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dotinurad Standards
- Dotinurad Impurity 148 (CAS CATO-C4X-2494148)
- Dotinurad Impurity 149 (CAS CATO-C4X-2494149)
- Dotinurad Impurity 83 (CAS CATO-C4X-249483)
- Dotinurad Impurity 73 (CAS CATO-C4X-249473)
- Dotinurad Impurity 71 (CAS CATO-C4X-249471)
- Dotinurad Impurity 153 (CAS CATO-C4X-2494153)
- Dotinurad impurity 105 (CAS CATO-C4X-2494105)
- Dotinurad Impurity 259 (CAS CATO-C4X-2494259)
Recommended Standards
- Eldecalcitol-d6 (CAS CATO-C4X-21401)
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- Tetrakis(2-butoxyethyl) orthosilicate (CAS 18765-38-3)
- (2S,3R,4R,5R)-5-(benzyloxymethyl)-3-[tert-butyl(diphenyl)silyl]oxy-tetrahydrofuran-2,4-diol (CAS 1583259-72-6)
- Loxoprofen Impurity 137 (CAS CATO-C4X-1488137)
- Ibuprofen Impurity 53 (CAS CATO-C4X-108253)
- Prilocaine Impurity 6 (Lidocaine Impurity 16) (CAS 39084-88-3)
- 2-cyano-5-nitrobenzene-1-sulfonyl chloride (CAS 1314977-09-7)
- Dansyl-DL-α-aminocaprylic acid cyclohexylammonium salt (CAS 102783-22-2)
- 3-Methyl-4-nitro-5-(4-nitrostyryl)isoxazole (CAS 78080-53-2)
- Ethyl (R)-4-((tert-butoxycarbonyl)amino)-5-methylhexanoate (CAS 494755-72-5)
- 2-(2-Hydroxyethyl)-5-nitroisoindoline-1,3-dione (CAS 55080-96-1)
- Ethyl 5-methyl-4-((4-nitrophenoxy)methyl)isoxazole-3-carboxylate (CAS 938006-55-4)
- Semaglutide Impurity 142 (CAS CATO-C4X-2226142)
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