2-Thiophenecarboxylic acid CAS 61209-02-7
| CAS No. | 61209-02-7 |
| Molecular Formula | C5H2Cl2O2S |
| Molecular Weight | 197.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-Thiophenecarboxylic acid (C5H2Cl2O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 197.04 g/mol, it falls into the medium-molecular-weight range. 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-Thiophenecarboxylic acid (CAS 61209-02-7), 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.
As a certified reference material (CRM), 2-Thiophenecarboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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.) | 1974 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Thiophenecarboxylic Standards
- 2-Thiophenecarboxylic acid, 5-amino-3-cyclopropyl-, methyl ester (CAS 851443-16-8)
- 2-Thiophenecarboxylic acid 2-chloro-2,3-dihydro-3-oxo-, methyl ester (CAS 95201-94-8)
- 2-Thiophenecarboxylic acid, 5-chloro-2,3-dihydro-3-oxo-, methyl ester (CAS 953092-76-7)
- 3-Thiophenecarboxylic acid n-butyl ester (CAS 317385-62-9)
- 3-Thiophenecarboxylic acid, 5-propyl-, hydrazide (9CI) 438215-42-0 (CAS 438215-42-0)
- 3-Thiophenecarboxylic acid, 5-(1-methylethyl)-, hydrazide (9CI) 438221-49-9 (CAS 438221-49-9)
- 59337-97-2 2-Thiophenecarboxylic acid, 3-(aminosulfonyl)- 3-(Aminosulfonyl)-2-thiophenecarboxylic acid 3-Sulfamoylthiophene-2-carboxylic acid (CAS 59337-97-2)
- 3-Thiophenecarboxylic acid, 2-isothiocyanato-5-methyl-, methyl ester (9CI) 588675-85-8 (CAS 588675-85-8)
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