3-Methoxythiophene-2-carboxylic acid CAS 60166-83-8
| CAS No. | 60166-83-8 |
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Methoxythiophene-2-carboxylic acid (CAS 60166-83-8), a certified reference material (molecular formula C6H6O3S, MW 158.18 g/mol) for analytical method development and quality control.
Structurally, 3-Methoxythiophene-2-carboxylic acid (C6H6O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 158.18 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).
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), 3-Methoxythiophene-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.
Physical & Chemical Properties
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Sulfur Atoms | 1 |
Related Methoxythiophene Standards
- 2-Methoxythiophene-3-carboxylic acid (CAS 71154-29-5)
- 4-Methoxythiophene-2-carboxylic Acid (CAS 77133-27-8)
- 4-Methoxythiophene-3-carboxylic Acid (CAS 71050-40-3)
- 4-Methoxythiophene-2-boronic acid (CAS 1321901-82-9)
- 3-Methoxythiophene-2-boronic acid (CAS 162607-22-9)
- (E)-3-methoxythiophene-2-carbaldehyde oxime (CAS 1824827-05-5)
- 3-Methoxythiophene-2-carboxamide (CAS 78031-17-1)
- 4-Methoxythiophene-3-carboxamide (CAS 65369-29-1)
Recommended Standards
- 3-Methoxyisothiazole-4-carboxamide (CAS 31815-42-6)
- 3-Methyl-2-thioxo-2,3-dihydro-1H-imidazole-4-carboxylic acid (CAS 64038-57-9)
- 3-Hydroxy-5-methyl-4H-pyrazole-4-carbothioic O-acid (CAS 860409-20-7)
- 3-Oxa-8-thiabicyclo[3.2.1]octane-2,4-dione (CAS 6007-84-7)
- N-(3-(2,4-Dimethylpentan-2-yl)isoxazol-5-yl)-2,6-dimethoxybenzamide (CAS 82558-68-7)
- 3-Cyclopropoxy-6-ethylpicolinamide (CAS 1243361-91-2)
- 1,3-Naphthalenedicarboxylic acid, 97% (CAS 2089-93-2)
- 6-((Tetrahydrofuran-3-yl)oxy)hexane-1-sulfonyl chloride (CAS 1342843-68-8)
- 2-(Boc-amino)-5-bromopyridine (CAS 159451-66-8)
- 6-Chloro-4-iodoisoquinolin-3-amine (CAS 2189717-75-5)
- Sambacolignoside (CAS 114449-12-6)
- 1-(4-Bromophenyl)but-3-en-1-ol (CAS 113842-31-2)
- 5-(tert-Butyl)-1H-benzo[d][1,2,3]triazole (CAS 38826-84-5)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
Why CATO?
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