5-(4-Methoxyphenyl)-4-methylthiophene-2-carboxylic acid CAS 878680-51-4
| CAS No. | 878680-51-4 |
| Molecular Formula | C13H12O3S |
| Molecular Weight | 248.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4-Methoxyphenyl)-4-methylthiophene-2-carboxylic acid (C13H12O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
5-(4-Methoxyphenyl)-4-methylthiophene-2-carboxylic acid (CAS 878680-51-4) is a high-purity analytical reference standard with the molecular formula C13H12O3S and a molecular weight of 248.30 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
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.) | 1987 |
| Sulfur Atoms | 1 |
Related Methoxyphenyl Standards
- 1-(4-(3-Methoxyphenyl)thiazol-2-yl)guanidine (CAS 123309-98-8)
- 1-(4-Methoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carbothioamide (CAS 1239753-95-7)
- (4-Methoxyphenyl)(3-methoxythiophen-2-yl)methanone (CAS 647833-69-0)
- 1-(4-(4-Methoxyphenyl)thiazol-2-yl)guanidine (CAS 91089-11-1)
- 4-(4-Methoxyphenyl)-5-methylthiophene-2-carboxylic acid (CAS 790263-77-3)
- 5-(4-Methoxyphenyl)thiophene-2-carbohydrazide (CAS 69202-24-0)
- 6-(2-Methoxyphenyl)-2-(methylthio)pyrimidin-4(3H)-one (CAS 56174-96-0)
- Methyl 5-(4-methoxyphenyl)thiophene-2-carboxylate (CAS 69202-21-7)
Recommended Standards
- 5-(4-Methoxy-2-methylphenyl)thiophene-2-carboxylic acid (CAS 764722-92-1)
- 5-(4-Ethoxyphenyl)thiophene-2-carboxylic acid (CAS 952959-59-0)
- 5-(Phenylsulfonyl)benzene-1,3-diamine (CAS 245652-65-7)
- 5-(2,6-Dimethoxyphenyl)thiophene-2-carbaldehyde (CAS 887987-02-2)
- N-(2-(4-Amino-6,7-dimethoxy-5-(pyridin-2-yl)quinazolin-2-yl)-1,2,3,4-tetrahydroisoquinolin-5-yl)methanesulfonamide methanesulfonate (CAS 358632-25-4)
- 1-(4-Fluorobenzyl)-5-methyl-1h-pyrazol-4-amine (CAS 1344097-46-6)
- (3R,5S)-tert-butyl 5-(azidomethyl)-3-(3-chloropropyl)-2-oxopyrrolidine-1-carboxylate (CAS 1013937-96-6)
- 2-(2-Chloro-3,4-dimethoxybenzyl)isoindoline-1,3-dione (CAS 2227107-24-4)
- N-(2,6-Dimethylphenyl)-3-methylisoxazole-5-carboxamide (CAS 130403-05-3)
- Methyl 2-amino-4-cyclopropylpyrimidine-5-carboxylate (CAS 1133115-42-0)
- Fluorescent Brightener 33 (CAS 61902-19-0)
- 2-(Cyanomethoxy)benzonitrile (CAS 49615-99-8)
- 2,2-Dichloro-N-(5-sulfamoyl-1,3,4-thiadiazol-2-yl)acetamide (CAS 189156-30-7)
- Anxiety Peptide (CAS 95237-86-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com