Ethyl 1-(4-(aminosulfonyl)phenyl)-3-(trifluoromethyl)-5-p-tolyl-1h-pyrazole-4-carboxylate CAS 1206970-24-2
| CAS No. | 1206970-24-2 |
| Molecular Formula | C20H18F3N3O4S |
| Molecular Weight | 453.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 1-(4-(aminosulfonyl)phenyl)-3-(trifluoromethyl)-5-p-tolyl-1h-pyrazole-4-carboxylate (C20H18F3N3O4S) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Ethyl 1-(4-(aminosulfonyl)phenyl)-3-(trifluoromethyl)-5-p-tolyl-1h-pyrazole-4-carboxylate (CAS 1206970-24-2) is a high-purity analytical reference standard with the molecular formula C20H18F3N3O4S and a molecular weight of 453.43 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C20H18F3N3O4S |
| Molecular Weight | 453.43 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.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-{[(2,6-dichlorophenyl)methyl]sulfanyl}-4,5-diphenyl-1-propyl-1H-imidazole (CAS 339277-23-5)
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- 4-(3-Chlorophenyl)-1,2-dimethyl-1H-imidazol-5-amine (CAS 1248461-01-9)
- p-Xylene-d10 (CAS 41051-88-1)
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- (Z)-Isopropyl 7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((S,E)-3-hydroxyoct-1-en-1-yl)cyclopentyl)hept-5-enoate (CAS 53764-90-2)
- (S)-2-amino-6-(benzyloxy)-6-oxohexanoic acid (CAS 38658-15-0)
- Isavuconazole Impurity 117 (CAS CATO-C4X-1236117)
- 2-(4-Trifluoromethoxyphenyl)-4-(3-pyridyl)thiazole (CAS 1965305-03-6)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
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