3-Chloro-2,5-dihydrothiophene 1,1-dioxide CAS 7311-87-7
| CAS No. | 7311-87-7 |
| Molecular Formula | C4H5ClO2S |
| Molecular Weight | 152.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Chloro-2,5-dihydrothiophene 1,1-dioxide (CAS 7311-87-7), a certified reference material (molecular formula C4H5ClO2S, MW 152.60 g/mol) for analytical method development and quality control.
3-Chloro-2,5-dihydrothiophene 1,1-dioxide (C4H5ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 3-Chloro-2,5-dihydrothiophene 1,1-dioxide 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 | C4H5ClO2S |
| Molecular Weight | 152.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 4-Chloro-2,3-dihydrothiophene 1,1-dioxide (CAS 10469-67-7)
- 2-chloro-3-fluoropyridin-4-amine (CAS 1227577-03-8)
- 6-chloro-5-fluoro-pyridin-3-amine (CAS 1256806-83-3)
- 4-chloro-3-fluoro-pyridin-2-amine (CAS 1393553-69-9)
- 5-chloro-4-fluoro-pyridin-2-amine (CAS 1393574-54-3)
- 5-chloro-1,3,4-thiadiazole-2-carbaldehyde (CAS 1539780-64-7)
- 5-Chloro-2,3-dihydrothiophene 1,1-dioxide (CAS 56879-02-8)
- 2-(2-chloro-2-fluoro-1-methylcyclopropyl)ethan-1-ol (CAS 1909316-23-9)
Recommended Standards
- Buta-1,3-diene-1-sulfonyl chloride (CAS 176697-78-2)
- 3-(chloromethyl)-4-fluoro-1-methyl-pyrazole (CAS 1628350-50-4)
- But-3-yne-1-sulfonyl chloride (CAS 936644-39-2)
- Chlorodiisopropylphosphine (CAS 40244-90-4)
- 2-[(4-amino-2-chlorophenyl)formamido]-N,N-dimethylacetamide (CAS 1096794-02-3)
- (1,2-dimethylpyrrolidin-3-yl)methanamine dihydrochloride (CAS 1955494-57-1)
- 1-(2-Oxo-2-pyrrolidin-1-ylethyl)-1H-indol-3-yl imidothiocarbamate hydroiodide (CAS 1396784-12-5)
- Methyl 2-[4-(1H-tetrazol-1-yl)phenoxy]propanoate (CAS 1706435-73-5)
- 1-Phenyl-3-[(pyridin-3-yl)methyl]thiourea (CAS 201215-93-2)
- Azilsartan Impurity 46 (CAS 1696392-12-7)
- 2-Ethoxy-4-methoxybenzaldehyde (CAS 42924-37-8)
- 4,5-Dichloro-2-methoxybenzoic acid (CAS 201150-65-4)
- Benzyl (cyclohexyl(phenylsulfonyl)methyl)carbamate (CAS 232598-56-0)
- Semaglutide Impurity 152 xTFA (CAS CATO-C4X-2226152)
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