5-Ethylthiophene-3-carboxylic acid CAS 19156-51-5
| CAS No. | 19156-51-5 |
| Molecular Formula | C7H8O2S |
| Molecular Weight | 156.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 156.20 g/mol gives 5-Ethylthiophene-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Ethylthiophene-3-carboxylic acid (CAS 19156-51-5), molecular formula C7H8O2S and molecular weight 156.20 g/mol, is a CATO reference standard with documented purity and traceability.
5-Ethylthiophene-3-carboxylic acid (C7H8O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Ethylthiophene-3-carboxylic acid 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 | C7H8O2S |
| Molecular Weight | 156.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 1 |
Related Ethylthiophene Standards
- 3-Ethylthiophene-2-carboxylic acid (CAS 74965-84-7)
- 4-Ethylthiophene-2-carboxylic acid (CAS 78585-26-9)
- 5-Ethylthiophene-2-carboxylic acid (CAS 23229-72-3)
- N-ethylthiophene-3-carboxamide (CAS 150079-41-7)
- 3-Ethylthiophene-2-carboxamide (CAS 189330-07-2)
- 5-ethylthiophene-2-boronic acid (CAS 162607-16-1)
- 5-Ethylthiophene-2-thiol (CAS 53381-57-0)
- Methyl 3-ethylthiophene-2-carboxylate (CAS 189331-46-2)
Recommended Standards
- 3-(3-Thienyl)propanoic Acid (CAS 16378-06-6)
- 4,5-Dimethylthiophene-3-carboxylic Acid (CAS 19156-52-6)
- 3-(Methylsulfinyl)phenol (CAS 15105-62-1)
- Methyl 2-Thiopheneacetate (CAS 19432-68-9)
- 2,5-Dibromoisophthalic acid (CAS 379711-35-0)
- 4-n-Propyloxybiphenyl-4´-carboxylic acid (CAS 59748-13-9)
- 3-((4-(Dimethylamino)phenyl)amino)-2-bromo-5,5-dimethylcyclohex-2-en-1-one (CAS 1023865-46-4)
- (1,8-Dioxa-4-azaspiro[5.5]undecan-4-yl)(6-(trifluoromethyl)-1H-indol-2-yl)methanone (CAS 2223749-52-6)
- 3-((1-(3-Fluorophenyl)ethyl)amino)propan-1-ol (CAS 1042574-74-2)
- 6-Tosyl-1-oxa-6-azaspiro[3.3]Heptan-3-one (CAS 1349199-62-7)
- (2-(Dimethylamino)cyclobutyl)methanol (CAS 1823714-98-2)
- Z-β-D-HomoAla-OH (CAS 67843-72-5)
- 2-Hydroxy-4-methylpyridine-3,5-dicarboxylic acid (CAS 341029-19-4)
- Neuropeptide VF (124-131) (human) (CAS 311309-27-0)
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