5-Chlorofuran-2-sulfonyl chloride CAS 443990-97-4
| CAS No. | 443990-97-4 |
| Molecular Formula | C4H2Cl2O3S |
| Molecular Weight | 201.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Chlorofuran-2-sulfonyl chloride (CAS 443990-97-4), a certified reference material (molecular formula C4H2Cl2O3S, MW 201.03 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 5-Chlorofuran-2-sulfonyl chloride is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 201.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C4H2Cl2O3S |
| Molecular Weight | 201.03 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; 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 |
| Sulfur Atoms | 1 |
Related Chlorofuran Standards
- 2-(3-chlorofuran-2-yl)-4,5-dimethyl-1,3-oxazole (CAS 1235440-67-1)
- 3-(5-Chlorofuran-2-yl)-1H-pyrazole-4-carbaldehyde (CAS 2092746-03-5)
- (3-Chlorofuran-2-yl)(phenyl)methanol (CAS 944652-59-9)
- (5-Chlorofuran-2-yl)(piperazin-1-yl)methanone (CAS 1042791-85-4)
- (2-Chlorofuran-3-yl)(thiophen-2-yl)methanol (CAS 1249949-36-7)
- (5-Acetyl-4-chlorofuran-2-yl)methyl acetate (CAS 96328-19-7)
- Methyl (5-chlorofuran-2-carbonyl)glycinate (CAS 1154573-41-7)
- 3-Benzyl-4-chlorofuran-2,5-dione (CAS 51627-58-8)
Recommended Standards
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- 1,3-Dimethyl-2,4-dioxo-7-propyl-2,3,4,7-tetrahydro-1H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid (CAS 1018256-11-5)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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