2-Methyl-2H,4H,5H,6H-cyclopenta[c]pyrazole-3-sulfonyl chloride CAS 1782834-36-9
| CAS No. | 1782834-36-9 |
| Molecular Formula | C7H9ClN2O2S |
| Molecular Weight | 220.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Methyl-2H,4H,5H,6H-cyclopenta[c]pyrazole-3-sulfonyl chloride (CAS 1782834-36-9) is a high-purity analytical reference standard with the molecular formula C7H9ClN2O2S and a molecular weight of 220.68 g/mol.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2-Methyl-2H,4H,5H,6H-cyclopenta[c]pyrazole-3-sulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 220.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures 2-Methyl-2H,4H,5H,6H-cyclopenta[c]pyrazole-3-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 | C7H9ClN2O2S |
| Molecular Weight | 220.68 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- D6-Mecoprop (CAS 1705649-54-2)
- 3-Cyclopropyl-1-methyl-1H-pyrazole-4-sulfonyl chloride (CAS 1864337-57-4)
- N-(2-amino-4-chlorophenyl)methanesulfonamide (CAS 156522-12-2)
- n-(4-Amino-2-chlorophenyl)methanesulfonamide (CAS 18735-42-7)
- 5-Cyclopropoxy-4-isopropoxy-N-methylpyridin-2-amine (CAS 1243450-27-2)
- 5-(2-Bromo-4,5-difluorophenyl)-1-(tert-butyl)-4-iodo-1H-pyrazole (CAS 1206676-80-3)
- 4-Methoxy-3-methylbenzophenone (CAS 53039-63-7)
- (E)-6-Bromo-3-(6-bromo-1-octyl-2-oxoindolin-3-ylidene)-1-octylindolin-2-one (CAS 1514807-49-8)
- 4-(3-Aminophenyl)butanoic acid (CAS 161466-30-4)
- 2-(3-Hydroxypyrrolidin-1-yl)-1-(4-methylpiperidin-1-yl)ethan-1-one (CAS 1485518-46-4)
- 3-(2,5-Dioxopyrrolidin-1-yl)-N-(4-(7-ethoxybenzofuran-2-yl)thiazol-2-yl)benzamide (CAS 921570-18-5)
- (5E)-2-{[3-(1H-imidazol-1-yl)propyl]amino}-5-{[2-(1H-pyrazol-1-yl)phenyl]methylidene}-4,5-dihydro-1,3-thiazol-4-one (CAS 956990-20-8)
- Tralkoxydim (CAS 87820-88-0)
- [D-Phe22]Semaglutide (CAS CATO-C4X-2226222)
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