5-(4,5-Dimethyl-1H-pyrazol-3-yl)furan-2-sulfonyl chloride CAS 1309671-79-1
| CAS No. | 1309671-79-1 |
| Molecular Formula | C9H9ClN2O3S |
| Molecular Weight | 260.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4,5-Dimethyl-1H-pyrazol-3-yl)furan-2-sulfonyl chloride (CAS 1309671-79-1), molecular formula C9H9ClN2O3S and molecular weight 260.70 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-(4,5-Dimethyl-1H-pyrazol-3-yl)furan-2-sulfonyl chloride (C9H9ClN2O3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-(4,5-Dimethyl-1H-pyrazol-3-yl)furan-2-sulfonyl chloride 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 | C9H9ClN2O3S |
| Molecular Weight | 260.70 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 methanol, ethanol, DMSO |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dimethyl Standards
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Recommended Standards
- 2-Chloro-N-(6-methyl-7-oxo-8,8a-dihydro-7H-thiazolo[3,2-b][1,2,4]triazin-3-yl)acetamide (CAS 1256627-72-1)
- 4-Chloro-1-(2-(methylsulfonyl)ethyl)-1h-pyrazolo[3,4-d]pyrimidine (CAS 1341372-72-2)
- 4-Chloro-1-ethyl-6-(methylsulfonyl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 1220517-82-7)
- 3-Chloro-7-methoxy-5-methyl-2H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1437430-07-3)
- H-D-Allo-Thr-OH.HCl (CAS 100157-61-7)
- 9-Bromo-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-5-one (CAS 57369-19-4)
- Tert-butyl ethyl(2-methyl-1-(piperidin-3-yl)propyl)carbamate (CAS 1258652-17-3)
- Ethyl 1-(4-fluorophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylate (CAS 477710-46-6)
- Tert-butyl (2-hydroxy-2-(m-tolyl)ethyl)carbamate (CAS 1026555-76-9)
- 1-Methyl-3-(3-(thiazol-2-yloxy)azetidine-1-carbonyl)pyridin-2(1H)-one (CAS 1797875-11-6)
- 3-(2-Amino-4-(4-methoxyphenyl)-7-oxo-5H-pyrrolo[3,4-d]pyrimidin-6(7H)-yl)propanoic acid (CAS 76628-76-7)
- 2-Methyl-5-phenyl-1,3-thiazole-4-sulfonamide (CAS 1394041-78-1)
- 2-((2,5-Dichlorophenyl)amino)-N-(1-methoxypropan-2-yl)acetamide (CAS 1197918-08-3)
- D-β-Asp15-Tirzepatide (CAS CATO-CPTD788930)
Why CATO?
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