4-(4-Methoxyphenyl)-5-methylthiophene-2-carboxylic acid CAS 790263-77-3
| CAS No. | 790263-77-3 |
| Molecular Formula | C13H12O3S |
| Molecular Weight | 248.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 248.30 g/mol gives 4-(4-Methoxyphenyl)-5-methylthiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-(4-Methoxyphenyl)-5-methylthiophene-2-carboxylic acid (CAS 790263-77-3), molecular formula C13H12O3S and molecular weight 248.30 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-(4-Methoxyphenyl)-5-methylthiophene-2-carboxylic acid (C13H12O3S) 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 its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 4-(4-Methoxyphenyl)-5-methylthiophene-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 | C13H12O3S |
| Molecular Weight | 248.30 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.) | 1986 |
| Sulfur Atoms | 1 |
Related Methoxyphenyl Standards
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- (4-Methoxyphenyl)(3-methoxythiophen-2-yl)methanone (CAS 647833-69-0)
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Recommended Standards
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- 4-(3,4-Dihydro-2h-benzo[b][1,4]dioxepin-7-yl)thiazol-2(3h)-imine (CAS 306935-51-3)
- 4'-(Methylsulfonyl)-[1,1'-biphenyl]-2-ol (CAS 893738-57-3)
- N-(4-Amino-2-chlorophenyl)-2,2-dimethylpropanamide hydrochloride (CAS 1185460-15-4)
- (R)-Benzyl (1-cyano-2-methylpropyl)carbamate (CAS 117143-35-8)
- 2-(4-Ethoxyphenyl)malondialdehyde (CAS 849021-19-8)
- rac-[(2R,3R)-2-(3-cyclopropyl-1,2,4-oxadiazol-5-yl)oxolan-3-yl]methanamine hydrochloride (CAS 2031242-44-9)
- 2-(3-Chloropyridin-2-yl)-5-(trifluoromethyl)-2H-1,2,3-triazole-4-carboxylic acid (CAS 1431729-85-9)
- N-Nitroso Ametryn (CAS 2731965-10-7)
- 2-(Methylsulfanyl)-N-(prop-2-en-1-yl)thieno[3,2-d]pyrimidin-4-amine (CAS 343374-12-9)
- 2-(3-Amino-4-chloro-1h-pyrazol-1-yl)-N,N-dimethylacetamide (CAS 1339763-35-7)
- 3-Bromo-2,1-benzothiazole (CAS 34250-63-0)
- 1-His-N-a-ethylidene Semaglutide (CAS CATO-C4X-2226252)
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