Methyl 4-chloro-3-hydroxy-5-methoxythiophene-2-carboxylate CAS 95201-98-2
| CAS No. | 95201-98-2 |
| Molecular Formula | C7H7ClO4S |
| Molecular Weight | 222.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies Methyl 4-chloro-3-hydroxy-5-methoxythiophene-2-carboxylate (CAS 95201-98-2), a certified reference material (molecular formula C7H7ClO4S, MW 222.65 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H7ClO4S, Methyl 4-chloro-3-hydroxy-5-methoxythiophene-2-carboxylate 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 222.65 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).
As a certified reference material (CRM), Methyl 4-chloro-3-hydroxy-5-methoxythiophene-2-carboxylate 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 | C7H7ClO4S |
| Molecular Weight | 222.65 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.) | 1984 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Methyl Standards
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Recommended Standards
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