Dotinurad Impurity 156 CAS CATO-C4X-2494156
| CAS No. | CATO-C4X-2494156 |
| Molecular Formula | C16H11Cl2NO4S |
| Molecular Weight | 384.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dotinurad Impurity 156 (CAS CATO-C4X-2494156), a pharmacopoeial impurity reference standard (molecular formula C16H11Cl2NO4S, MW 384.23 g/mol) used for the identification and quantification of trace impurities in APIs.
Dotinurad Impurity 156 (C16H11Cl2NO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 156 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 | C16H11Cl2NO4S |
| Molecular Weight | 384.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dotinurad Standards
- Dotinurad Impurity 225 (CAS CATO-C4X-2494225)
- Dotinurad Impurity 13 (CAS CATO-C4X-249413)
- Dotinurad Impurity 162 (CAS CATO-C4X-2494162)
- Dotinurad Impurity 146 (CAS CATO-C4X-2494146)
- Dotinurad Impurity 246 (CAS CATO-C4X-2494246)
- Dotinurad Impurity 198 (CAS CATO-C4X-2494198)
- Dotinurad impurity 107 (CAS CATO-C4X-2494107)
- Dotinurad Impurity 109 (CAS 1285572-82-8)
Recommended Standards
- Nafamostat Impurity 45 (CAS CATO-C4X-133245)
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- tert-Butyl (3,4-dichloro-6-fluoro-9H-pyrido[2,3-b]indol-8-yl)(methyl)carbamate (CAS 2245358-17-0)
- 6-(2,6-Dichlorophenyl)-8-methyl-2-(methylsulfonyl)pyrido[2,3-d]pyrimidin-7(8H)-one (CAS 185039-48-9)
- Iohexol impurity 34 (CAS CATO-C4X-166434)
- Fosinopril Impurity 1 (CAS 72651-25-3)
- Carglumic Acid impurity 7 (CAS 219844-08-3)
- Tert-butyl (2S,3S)-3-(hydroxymethyl)-2-methylmorpholine-4-carboxylate (CAS 1787250-25-2)
- 8-Hydroxy-6,9-diphenyl-10H-pyrido[1,2-α]quinoxalin-10-one (CAS 62638-50-0)
- 1-(4-Methyl-[2,2'-bipyrimidin]-5-yl)ethan-1-one (CAS 1342643-17-7)
- 1-amino-4-[(2-methylphenyl)amino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid 352-92-1 AR-1C1469 (CAS 352-92-1)
- PQCA (CAS 1144504-35-7)
- Ethyl 5-(trifluoromethoxy)-1H-indole-2-carboxylate (CAS 175203-82-4)
- Tau Peptide (337-368) (Repeat 4 Domain) trifluoroacetate salt (CAS 330456-27-4)
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