4,5-Dichloro-3-ethoxythiophene-2-carboxylic acid CAS 1707581-70-1
| CAS No. | 1707581-70-1 |
| Molecular Formula | C7H6Cl2O3S |
| Molecular Weight | 241.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,5-Dichloro-3-ethoxythiophene-2-carboxylic acid.
4,5-Dichloro-3-ethoxythiophene-2-carboxylic acid (CAS 1707581-70-1), molecular formula C7H6Cl2O3S and molecular weight 241.09 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H6Cl2O3S, 4,5-Dichloro-3-ethoxythiophene-2-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 241.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures 4,5-Dichloro-3-ethoxythiophene-2-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 | C7H6Cl2O3S |
| Molecular Weight | 241.09 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.) | 1994 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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- Suc-Val-Pro-Phe-pNA (CAS 95192-11-3)
- Lovastatin Impurity 36 (CAS CATO-C4X-168436)
- 5-(Ethylsulfonyl)pyridin-2-amine (CAS 886049-32-7)
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