Ethyl 5-(chlorosulfonyl)furan-3-carboxylate CAS 256373-91-8
| CAS No. | 256373-91-8 |
| Molecular Formula | C7H7ClO5S |
| Molecular Weight | 238.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 238.65 g/mol gives Ethyl 5-(chlorosulfonyl)furan-3-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 5-(chlorosulfonyl)furan-3-carboxylate (CAS 256373-91-8), molecular formula C7H7ClO5S and molecular weight 238.65 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 5-(chlorosulfonyl)furan-3-carboxylate (C7H7ClO5S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H7ClO5S |
| Molecular Weight | 238.65 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 4-(Chlorosulfonyl)-2,5-dimethylfuran-3-carboxylic acid (CAS 1016689-45-4)
- Ethyl 2-(chlorosulfonyl)-1H-imidazole-5-carboxylate (CAS 1073187-02-6)
- methyl 3-[(chlorosulfonyl)methyl]-2-furoate (CAS 1114823-97-0)
- methyl 5-chlorosulfonyl-2-methyl-pyrazole-3-carboxylate (CAS 1122567-32-1)
- Methyl 5-(chlorosulfonyl)-1-methyl-1h-pyrazole-4-carboxylate (CAS 1151512-24-1)
- Ethyl 3-(chlorosulfonyl)-1H-pyrazole-4-carboxylate (CAS 115703-22-5)
- Methyl 5-(chlorosulfonyl)-1-methyl-1h-pyrazole-3-carboxylate (CAS 1245823-37-3)
- Methyl 5-((chlorosulfonyl)methyl)furan-2-carboxylate (CAS 1248127-92-5)
Recommended Standards
- Ethyl 5-(chlorosulfonyl)furan-2-carboxylate (CAS 87299-59-0)
- methyl 4-(chlorosulfonyl)-5-methyl-2-furoate (CAS 344308-91-4)
- Chlorodimorpholinophosphine (CAS 75302-66-8)
- Methyl 5-(chlorosulfonyl)-2-methyl-3-furoate (CAS 306936-35-6)
- (3-Cyclopropoxy-5-nitropyridin-2-yl)methanamine (CAS 1243326-27-3)
- 4-Methoxy-3-pyridinesulfonyl Chloride (CAS 945257-53-4)
- 2-Hydroxy-5-methoxyphenylboronic acid (CAS 259209-16-0)
- N-(4-Amino-2-methylphenyl)-2-[2-(tert-butyl)-phenoxy]acetamide (CAS 1020058-13-2)
- tert-Butyl (2-chloroacetyl)carbamate (CAS 120158-03-4)
- 1-(4-Methoxyphenyl)-3-({4-[(4-{[3-(4-methoxyphenyl)-3-oxopropyl]sulfanyl}phenyl)sulfanyl]phenyl}sulfanyl)propan-1-one (CAS 882749-71-5)
- (1-Iodoethyl)benzene (CAS 10604-60-1)
- (3,5-Difluoro-2-nitrophenyl)boronic acid (CAS 1150114-60-5)
- 5-Chloro-N-(2-(dimethylamino)ethyl)-6-oxo-1-(3-(trifluoromethyl)benzyl)-1,6-dihydropyridine-3-carboxamide (CAS 338981-07-0)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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