3,4-dimethylthiophene-2-carboxylic acid CAS 89639-74-7
| CAS No. | 89639-74-7 |
| Molecular Formula | C7H12O2S |
| Molecular Weight | 160.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4-dimethylthiophene-2-carboxylic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,4-dimethylthiophene-2-carboxylic acid (CAS 89639-74-7), molecular formula C7H12O2S and molecular weight 160.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 3,4-dimethylthiophene-2-carboxylic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 160.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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), 3,4-dimethylthiophene-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 | C7H12O2S |
| Molecular Weight | 160.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1982 |
| Sulfur Atoms | 1 |
Related dimethylthiophene Standards
- 3,5-dimethylthiophene-2-carboxylic acid (CAS 65613-27-6)
- 3,4-Dimethylthiophene-2,5-dicarbonitrile (CAS 155632-41-0)
- Dimethylthiophene-3,4-dicarbonitrile (CAS 287096-97-3)
- 4,5-Dimethylthiophene-3-carboxylic Acid (CAS 19156-52-6)
- 2,4-Dimethylthiophene-3-carboxylic acid (CAS 503308-96-1)
- 4,5-Dimethylthiophene-2-carboxylic acid (CAS 40808-24-0)
- 4,5-Dimethylthiophene-2-carboxamide (CAS 473693-83-3)
- N,3-dimethylthiophene-2-carboxamide (CAS 56776-68-2)
Recommended Standards
- 2-(thiophen-2-yl)propanoic acid (CAS 54955-39-4)
- 2-(Cyclopentylsulfanyl)acetic acid (CAS 52363-14-1)
- 4-Sulfanylcyclohexane-1-carboxylic acid (CAS 82001-54-5)
- 2-(5-methylthiophen-2-yl)acetic acid (CAS 70624-30-5)
- 2-[(4-Chlorobenzyl)oxy]benzamide (CAS 29579-12-2)
- imidazo[1,5-a]pyridin-5-ylboronic acid (CAS 1309980-27-5)
- 3-(3-Aminooxetan-3-yl)propan-1-ol (CAS 1823902-86-8)
- 5-Methyl-4-(3-trifluoromethylphenyl)-thiazol-2-ylamine (CAS 1225654-34-1)
- 1-Benzyl-5-bromo-2,4-diphenyl-1H-imidazole (CAS 1449390-00-4)
- 2,4-Difluorobenzamide (CAS 85118-02-1)
- O,O'-(butane-1,4-diyl)bis(hydroxylamine) hydrochloride (CAS 60302-18-3)
- N-[2-(2-Amino-ethyl)-2H-pyrazol-3-yl]-acetamide dihydrochloride (CAS 1361116-26-8)
- N-(4-Bromo-2-chlorophenyl)-2-methoxybenzamide (CAS 842117-64-0)
- Semaglutide impurity 200 (CAS CATO-C4X-2226200)
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