Methyl 3-Ethoxythiophene-2-carboxylate CAS 139926-22-0
| CAS No. | 139926-22-0 |
| Molecular Formula | C8H10O3S |
| Molecular Weight | 186.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Methyl 3-Ethoxythiophene-2-carboxylate (CAS 139926-22-0), molecular formula C8H10O3S and molecular weight 186.23 g/mol, is a CATO reference standard with documented purity and traceability.
Methyl 3-Ethoxythiophene-2-carboxylate (C8H10O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Methyl 3-Ethoxythiophene-2-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H10O3S |
| Molecular Weight | 186.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1996 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 4-ethoxythiophene-2-carboxylate (CAS 1707391-85-2)
- 3-Ethoxythiophene-2-carbohydrazide (CAS 175137-40-3)
- Methyl 4-ethoxythiophene-3-carboxylate (CAS 1823338-68-6)
- 3-Ethoxythiophene-2-carbonyl chloride (CAS 139926-24-2)
- 4-ethoxythiophene-3-carboxylic acid (CAS 70438-00-5)
- Ethyl 4-ethoxythiophene-3-carboxylate (CAS 70437-99-9)
- 3-Ethoxythiophene-2-carboxylic acid (CAS 139926-23-1)
- 4-Ethoxythiophene-2-carboxylic acid (CAS 917980-53-1)
Recommended Standards
- 3-Phenylisothiazole-4-carbonitrile (CAS 13950-68-0)
- (Sulfamoylamino)methylbenzene (CAS 14101-58-7)
- 2-(Thiophen-3-yl)pyridine-4-carbonitrile (CAS 1393879-98-5)
- Ethyl 5-Methoxy-2-thiophenecarboxylate (CAS 1418117-79-9)
- tert-butyl 5'-bromospiro[azetidine-3,3'-indoline]-1-carboxylate (CAS 2059972-24-4)
- 4-[(2-Iodo-5,5-dimethyl-3-oxo-1-cyclohexenyl)amino]benzenecarboxylic acid (CAS 1023484-19-6)
- mono(1,1'-bis(4-(dimethylamino)phenyl)-[4,4'-bipyridine]-1,1'-diium) monochloride (CAS 1350324-34-3)
- Tert-butyl 4-((pyrimidin-5-ylmethyl)amino)azepane-1-carboxylate (CAS 1699521-51-1)
- 1-(2,4-Difluorophenyl)cyclopropane-1-methanamine (CAS 1340550-61-9)
- 3-Chloro-N-[5-(5-(trifluoromethyl)pyridin-2-yl)--[1,2,4]oxadiazol-3-ylmethyl]benzamide (CAS 1311278-49-5)
- 6-fluoro-3-iodo-1H-indazole (CAS 885522-07-6)
- 4-(Difluoromethyl)-5-fluoro-3-nitropyridin-2-amine (CAS 1805342-47-5)
- 1-(2-((4-Methylbenzyl)thio)-4,5-dihydro-1H-imidazol-1-yl)-2-(thiophen-2-yl)ethan-1-one (CAS 851805-30-6)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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