Methyl 4-phenylthiophene-2-carboxylate CAS 21676-90-4
| CAS No. | 21676-90-4 |
| Molecular Formula | C12H10O2S |
| Molecular Weight | 218.27 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 Methyl 4-phenylthiophene-2-carboxylate.
CATO supplies Methyl 4-phenylthiophene-2-carboxylate (CAS 21676-90-4), a certified reference material (molecular formula C12H10O2S, MW 218.27 g/mol) for analytical method development and quality control.
Methyl 4-phenylthiophene-2-carboxylate (C12H10O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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.
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 | C12H10O2S |
| Molecular Weight | 218.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 5-Phenylthiophene-2-carboxylate (CAS 14597-62-7)
- 3-Methyl-5-phenylthiophene-2-carboxylic acid (CAS 23806-25-9)
- 4-Methyl-5-phenylthiophene-2-carboxylic acid (CAS 40133-12-8)
- 5-Methyl-4-phenylthiophene-2-carboxylic acid (CAS 62404-08-4)
- Methyl 4-phenylthiophene-3-carboxylate (CAS 38695-71-5)
- 3-Phenylthiophene-2-carboxylic Acid (CAS 10341-88-5)
- 4-Phenylthiophene-2-carbonyl chloride (CAS 683274-48-8)
- 3-Methyl-4-phenylthiophene-2,5-dicarbonitrile (CAS 339111-50-1)
Recommended Standards
- methyl 4-hydroxythieno[3,2-d]pyrimidine-6-carboxylate (CAS 2832388-34-6)
- Methyl 4-(thiophen-3-yl)benzoate (CAS 20608-91-7)
- Methyl 6-mercapto-2-naphthoate (CAS 95901-15-8)
- methyl 3-sulfanylnaphthalene-2-carboxylate (CAS 86163-64-6)
- Zinc acetylacetonate hydrate (CAS 108503-47-5)
- Fmoc-D-Glu-OBzl (CAS 104091-10-3)
- 5-Ethyl 2-methyl 4-isopropyl-3-methyl-6H-thieno[2,3-b]pyrrole-2,5-dicarboxylate (CAS 2852760-92-8)
- 4,5,7-Trimethyl-4,7-dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1820603-61-9)
- 5-bromo-8-methyl-imidazo[1,2-a]pyridine (CAS 1257294-47-5)
- 2,6-Dichloro-5-(trifluoromethyl)pyrimidin-4-amine (CAS 2758000-85-8)
- 1-(6-Methylpyridin-2-yl)hexan-1-amine (CAS 1343221-04-4)
- 1-[1-(4-fluorophenyl)pyrrolidin-3-yl]methanamine (CAS 933712-85-7)
- Ethyl 2-O-benzoyl-3-O-(2-methylnaphthyl)-4,6-O-benzylidene-1-thio-β-D-glucopyranoside (CAS 352008-11-8)
- Semaglutide Impurity 16 (CAS CATO-C4X-222616)
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