Methyl 4-chloro-3-hydroxy-5-(prop-2-yn-1-ylthio)thiophene-2-carboxylate CAS 1707568-91-9
| CAS No. | 1707568-91-9 |
| Molecular Formula | C9H7ClO3S2 |
| Molecular Weight | 262.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies Methyl 4-chloro-3-hydroxy-5-(prop-2-yn-1-ylthio)thiophene-2-carboxylate (CAS 1707568-91-9), a certified reference material (molecular formula C9H7ClO3S2, MW 262.73 g/mol) for analytical method development and quality control.
Methyl 4-chloro-3-hydroxy-5-(prop-2-yn-1-ylthio)thiophene-2-carboxylate (C9H7ClO3S2) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Methyl 4-chloro-3-hydroxy-5-(prop-2-yn-1-ylthio)thiophene-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 | C9H7ClO3S2 |
| Molecular Weight | 262.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
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