Ethyl (4-chloro-1,1-dioxidotetrahydrothiophen-3-yl)carbamate CAS 18240-45-4
| CAS No. | 18240-45-4 |
| Molecular Formula | C7H12ClNO4S |
| Molecular Weight | 241.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl (4-chloro-1,1-dioxidotetrahydrothiophen-3-yl)carbamate (CAS 18240-45-4), a certified reference material (molecular formula C7H12ClNO4S, MW 241.69 g/mol) for analytical method development and quality control.
Ethyl (4-chloro-1,1-dioxidotetrahydrothiophen-3-yl)carbamate (C7H12ClNO4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, 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.
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 | C7H12ClNO4S |
| Molecular Weight | 241.69 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, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- Ambazone (CAS 539-21-9)
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- 6-(Bromomethyl)-2,2-dimethyl-4H-1,3-dioxin-4-one (CAS 81956-30-1)
- 6-Bromo-4-methylbenzo[d]thiazole (CAS 1807164-46-0)
- (1R,4aS,7aS)-Methyl 1-(benzyloxy)-7-(hydroxymethyl)-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-4-carboxylate (CAS 206755-40-0)
- 5-(Trifluoromethoxy)pyridin-2-amine dihydrochloride (CAS 1707602-50-3)
- tert-Butyl 2-carbamoyl-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-carboxylate (CAS 230301-61-8)
- 2,3-Difluorophenyl trifluoromethanesulfonate (CAS 211315-75-2)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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