1,3-Dimethyl-5-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride CAS 1365959-08-5
| CAS No. | 1365959-08-5 |
| Molecular Formula | C6H6ClF3N2O2S |
| Molecular Weight | 262.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,3-Dimethyl-5-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1,3-Dimethyl-5-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride (CAS 1365959-08-5), a certified reference material (molecular formula C6H6ClF3N2O2S, MW 262.64 g/mol) for analytical method development and quality control.
Based on its molecular formula C6H6ClF3N2O2S, 1,3-Dimethyl-5-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 262.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C6H6ClF3N2O2S |
| Molecular Weight | 262.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 5-Methyl-1-(2,2,2-trifluoroethyl)-1H-pyrazole-4-sulfonyl chloride (CAS 1352542-50-7)
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- 1-(2,6-Difluorophenyl)-1H-pyrrole-2,5-dione (CAS 134366-03-3)
- 3-(4-(Hydroxymethyl)phenyl)thiophene-2-carboxylic acid (CAS 1365968-90-6)
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- 2-(Difluoromethyl)quinoline (CAS 1075184-01-8)
- D-Pro37-Tirzepatide (CAS CATO-CPTD788902)
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