5-Methoxy-2-thiophenecarboxylic Acid CAS 29212-22-4
| CAS No. | 29212-22-4 |
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 5-Methoxy-2-thiophenecarboxylic Acid (C6H6O3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-Methoxy-2-thiophenecarboxylic Acid (CAS 29212-22-4) is a high-purity analytical reference standard with the molecular formula C6H6O3S and a molecular weight of 158.18 g/mol.
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), 5-Methoxy-2-thiophenecarboxylic 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.) | 1965 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 5-Methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 6939-11-3)
- 2-Methoxy-1-(tetrahydro-2H-pyran-4-yl)ethan-1-one (CAS 1338948-04-1)
- 5-Methoxy-4-oxaspiro[2.5]octan-7-ol (CAS 1359869-20-7)
- 1-Methoxy-5-methylhexane-2,4-dione (CAS 144712-26-5)
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Recommended Standards
- 5-Mercapto-2-methyloxazole-4-carboxamide (CAS 83990-20-9)
- 5-Hydroxy-6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 35463-39-9)
- 5-Methyl-1,2,3-thiadiazole-4-carbohydrazide (CAS 4137-63-7)
- 5-Amino-3-methylisothiazole-4-carboxylic acid (CAS 22131-51-7)
- (4-Fluorophenyl)(2-(phenoxymethyl)-6,7-dihydrooxazolo[5,4-c]pyridin-5(4H)-yl)methanone (CAS 1363281-27-9)
- (S)-4-(4-Fluorobenzyl)oxazolidine-2,5-dione (CAS 800401-58-5)
- 5-(2-Methoxyethyl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1341690-88-7)
- H-D-Leu-pNA (CAS 63324-49-2)
- N-(3-chlorophenyl)-2-methyl-1-oxa-4-azaspiro[4.6]Undecane-4-carboxamide (CAS 633299-25-9)
- 2,8-Dimethylquinolin-6-ol (CAS 1934787-04-8)
- N,2-dimethyl-6-nitroaniline (CAS 70254-74-9)
- 3,4-Di(tetrahydropyran-2-oxy)benzaldehyde (Major) (CAS 61854-89-5)
- 3,4-Dihydrobenzo[f][1,4]oxazepin-5(2H)-one (CAS 703-51-5)
- Semaglutide Impurity 14(Discontinued,See CPTD788307 ) (CAS CATO-C4X-222614)
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