5-Chloro-1-methyl-1H-pyrazole-4-sulfonyl chloride CAS 366019-28-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 366019-28-5 |
| Molecular Formula | C4H4Cl2N2O2S |
| Molecular Weight | 215.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-1-methyl-1H-pyrazole-4-sulfonyl chloride (CAS 366019-28-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C4H4Cl2N2O2S. Molecular weight: 215.06 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C4H4Cl2N2O2S |
| Molecular Weight | 215.06 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-chloro-1-methyl-1H-pyrazole-5-sulfonyl chloride (CAS 1245807-31-1)
- 5-Chloro-1-methyl-1H-imidazole-4-sulfonyl chloride (CAS 137048-96-5)
- 2-Chloro-1-methyl-1H-imidazole-4-sulfonyl chloride (CAS 1394040-91-5)
- 2-Chloro-1-methyl-1H-imidazole-5-sulfonyl chloride (CAS 1394041-92-9)
- 5-Chloro-3-(2-chlorophenyl)-1,2,4-oxadiazole (CAS 1178490-41-9)
- 4-Chloro-2-(3-chloroprop-1-yn-1-yl)-1-methoxybenzene (CAS 1183598-03-9)
- 4-Chloro-2-(1-chloroethyl)-1H-benzo[d]imidazole (CAS 1184624-71-2)
- 2-Chloro-5-(4-chlorophenyl)-1,3,4-oxadiazole (CAS 90736-28-0)
Recommended Standards
- 4-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl)benzonitrile (CAS 214360-44-8)
- 7-Bromothiazolo[4,5-c]pyridine (CAS 108724-09-0)
- 4-Bromo-7-fluoro-2,3-dihydro-1H-indene (CAS 2332943-95-8)
- N-(1-Cyanocyclopentyl)-2-((5-(o-tolylamino)-1,3,4-thiadiazol-2-yl)thio)acetamide (CAS 863412-31-1)
- Dodecyl Methanethiosulfonate (CAS 355803-77-9)
- 2-(1,2,4-Triazol-1-yl)acetonitrile (CAS 81606-79-3)
- N-(sec-butyl)-1,5-dimethyl-1H-pyrazole-3-carboxamide (CAS 1052634-29-3)
- β-Cyclodextrin, 6A-acetate (CAS 131991-46-3)
- 3-(Benzyloxy)-4-bromobenzaldehyde (CAS 736992-48-6)
- Hexapeptide-10 (CAS 146439-94-3)
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 13829788188 / jacky.chen@cato-chem.com