2,4-Dichlorothiophene-3-carboxylic acid CAS 1934940-61-0
| CAS No. | 1934940-61-0 |
| Molecular Formula | C5H2Cl2O2S |
| Molecular Weight | 197.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,4-Dichlorothiophene-3-carboxylic acid (C5H2Cl2O2S) 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. 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).
2,4-Dichlorothiophene-3-carboxylic acid (CAS 1934940-61-0), molecular formula C5H2Cl2O2S and molecular weight 197.04 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2,4-Dichlorothiophene-3-carboxylic acid 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 | C5H2Cl2O2S |
| Molecular Weight | 197.04 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 | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorothiophene Standards
- 4,5-Dichlorothiophene-3-carboxylic acid (CAS 123418-70-2)
- 3-Acetyl-2,5-dichlorothiophene (CAS 36157-40-1)
- 2,5-dichlorothiophene-3-carbaldehyde (CAS 61200-60-0)
- 3,4-Dichlorothiophene 1,1-dioxide (CAS 52819-14-4)
- 3,5-Dichlorothiophene-2,4-dicarbaldehyde (CAS 1823800-83-4)
- 2,5-Dichlorothiophene-3,4-dicarbaldehyde (CAS 55581-76-5)
- 4,5-Dichlorothiophene-2,3-dicarbaldehyde (CAS 89465-82-7)
- Methyl 2,5-dichlorothiophene-3-carboxylate (CAS 145129-54-0)
Recommended Standards
- 3,4-Dichloroisothiazole-5-carboxylic acid amide (CAS 18480-55-2)
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- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-4,5-dihydroisoxazole (CAS 1446105-21-0)
- 2-Thiophenecarboxylic acid (CAS 61209-02-7)
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- Methyl 4-(chlorosulfonyl)-1,2,5-trimethyl-1h-pyrrole-3-carboxylate (CAS 306936-33-4)
- 2-Fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzenesulfonamide (CAS 1417984-77-0)
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