4-(Methoxycarbonyl)thiophene-2-carboxylic acid CAS 135080-15-8
| CAS No. | 135080-15-8 |
| Molecular Formula | C7H6O4S |
| Molecular Weight | 186.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-(Methoxycarbonyl)thiophene-2-carboxylic 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.
4-(Methoxycarbonyl)thiophene-2-carboxylic acid (CAS 135080-15-8), molecular formula C7H6O4S and molecular weight 186.19 g/mol, is a CATO reference standard with documented purity and traceability.
4-(Methoxycarbonyl)thiophene-2-carboxylic acid (C7H6O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H6O4S |
| Molecular Weight | 186.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Sulfur Atoms | 1 |
Related Methoxycarbonyl Standards
- 2-(Methoxycarbonyl)thiophene-3-carboxylic acid (CAS 115777-72-5)
- 4-(Methoxycarbonyl)thiophene-3-carboxylic acid (CAS 4282-30-8)
- 5-(Methoxycarbonyl)-2-thiophenecarboxylic Acid (CAS 50340-79-9)
- 5-(Methoxycarbonyl)thiophene-3-carboxylic acid (CAS 2084800-64-4)
- 1-(Methoxycarbonyl)cyclohexane-1-carboxylic acid (CAS 33315-64-9)
- 2-(Methoxycarbonyl)cyclohexanecarboxylic acid (CAS 7719-08-6)
- 3-(Methoxycarbonyl)-2,2-dimethylcyclobutane-1-carboxylic acid (CAS 92939-68-9)
- 3-(Methoxycarbonyl)cyclohexanecarboxylic Acid (CAS 25090-39-5)
Recommended Standards
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- 1-(2-Fluorophenyl)-1H-pyrrole-2-carbonitrile (CAS 136773-60-9)
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- 2-(2-(Benzyloxy)-3-chloro-5-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2121512-22-7)
- 51094-78-1 Tantalum pentabutanolate 1-Butanol, tantalum(5+) salt (5:1) 1-Butanol, tantalum(5+) salt Butanol, tantalum salt EINECS 256-962-9 (CAS 51094-78-1)
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