Methyl 3-chloro-4-(isopropylsulfonyl)thiophene-2-carboxylate CAS 175201-99-7
| CAS No. | 175201-99-7 |
| Molecular Formula | C9H11ClO4S2 |
| Molecular Weight | 282.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Methyl 3-chloro-4-(isopropylsulfonyl)thiophene-2-carboxylate (CAS 175201-99-7) is a high-purity analytical reference standard with the molecular formula C9H11ClO4S2 and a molecular weight of 282.76 g/mol.
Methyl 3-chloro-4-(isopropylsulfonyl)thiophene-2-carboxylate (C9H11ClO4S2) 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H11ClO4S2 |
| Molecular Weight | 282.76 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 |
| 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.) | 2007 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
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Recommended Standards
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- 4-Hydrazinyl-1-methyl-1H-pyrrolo[3,2-c]pyridine (CAS 783241-80-5)
- Butyl N-benzoyl-N-(3-chloro-4-fluorophenyl)alaninate (CAS 1396965-66-4)
- 4-Bromo-1-{[4-(trifluoromethyl)phenyl]methyl}-1h-pyrazole (CAS 1306966-11-9)
- Capivasertib Impurity 1 (CAS 1143532-51-7)
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- N-Ethyl-ethanamine- (CAS 251901-52-7)
- 3-Bromo-4-(2,4-difluorophenyl)butan-2-one (CAS 1247192-90-0)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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