3-Methoxy-5-phenylthiophene-2-carboxylic acid CAS 113589-49-4
| CAS No. | 113589-49-4 |
| Molecular Formula | C12H10O3S |
| Molecular Weight | 234.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Methoxy-5-phenylthiophene-2-carboxylic acid.
3-Methoxy-5-phenylthiophene-2-carboxylic acid (CAS 113589-49-4) is a high-purity analytical reference standard with the molecular formula C12H10O3S and a molecular weight of 234.27 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 3-Methoxy-5-phenylthiophene-2-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 234.27 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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-Methoxy-5-phenylthiophene-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 | C12H10O3S |
| Molecular Weight | 234.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- (7-Methoxy-benzo[d]imidazo-[2,1-b]thiazol-2-yl)-methanol (CAS 122830-11-9)
- 3-Methoxy-5-(thiophen-3-yl)benzoic acid (CAS 1261969-21-4)
- 5-(2-Methoxy Phenyl)Thiophene-2-Carboxylic Acid (CAS 844897-41-2)
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- 2-Methoxy-N-(4-(pyrrolidin-1-yl)phenyl)acetamide (CAS 1090371-41-7)
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Recommended Standards
- 1-(1,3-Benzodioxol-5-ylmethyl)-1H-imidazole-2-thiol (CAS 1105195-60-5)
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- N-[5-(4-hydroxyphenyl)-1,3-thiazol-2-yl]acetamide (CAS 1087792-46-8)
- 4-[2-(methylsulfanyl)-1h-imidazol-1-yl]benzoic acid (CAS 1146290-23-4)
- 1-(3,4-Difluorobenzyl)-1H-pyrrole-2-carboxylic acid (CAS 1275080-61-9)
- Beta-Caryophyllene Epoxide (CAS 1139-30-6)
- (4-((4-Chlorophenyl)thio)-3-nitrophenyl)methanol (CAS 773869-91-3)
- Phenylephrine 2-O-β-glucuronide, >98% (CAS 1260611-56-0)
- 1,3-Dichloropropene (cis- and trans- mixture) (CAS 542-75-6)
- 5-Amino-1-isopropyl-1H-pyrazol-3-ol (CAS 78317-68-7)
- 2-Chloro-5-methoxybenzoic Acid (CAS 6280-89-3)
- Methyl 1-benzyl-1H-pyrrole-2-carboxylate (CAS 18159-23-4)
- 3-(1-((tert-Butyldimethylsilyl)oxy)-2-methylpropan-2-yl)isoxazol-5-amine (CAS 2731296-75-4)
- Eosinophilotactic Peptide (CAS 61756-28-3)
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