Ethyl 1-[5-(2,4-difluorobenzenesulfonamido)pyridin-2-yl]-3,5-dimethyl-1H-pyrazole-4-carboxylate CAS 956960-40-0
| CAS No. | 956960-40-0 |
| Molecular Formula | C19H18F2N4O4S |
| Molecular Weight | 436.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ethyl 1-[5-(2,4-difluorobenzenesulfonamido)pyridin-2-yl]-3,5-dimethyl-1H-pyrazole-4-carboxylate 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.
CATO supplies Ethyl 1-[5-(2,4-difluorobenzenesulfonamido)pyridin-2-yl]-3,5-dimethyl-1H-pyrazole-4-carboxylate (CAS 956960-40-0), a certified reference material (molecular formula C19H18F2N4O4S, MW 436.43 g/mol) for analytical method development and quality control.
Ethyl 1-[5-(2,4-difluorobenzenesulfonamido)pyridin-2-yl]-3,5-dimethyl-1H-pyrazole-4-carboxylate (C19H18F2N4O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H18F2N4O4S |
| Molecular Weight | 436.43 g/mol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 2-(2,5-Difluorobenzenesulfonamido)benzoic acid (CAS 749219-07-6)
- 2-(3,4-Difluorobenzenesulfonamido)benzoic acid (CAS 329908-54-5)
- 3-(3,4-Difluorobenzenesulfonamido)benzoic acid (CAS 329268-45-3)
- 4-(2,4-Difluorobenzenesulfonamido)butanoic acid (CAS 794553-83-6)
- 3-(3,4-Difluorobenzenesulfonamido)propanoic acid (CAS 746655-91-4)
Recommended Standards
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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