3-Ethylthiophene-2-carbaldehyde CAS 21426-07-3
| CAS No. | 21426-07-3 |
| Molecular Formula | C7H8OS |
| Molecular Weight | 140.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Ethylthiophene-2-carbaldehyde (CAS 21426-07-3), molecular formula C7H8OS and molecular weight 140.20 g/mol, is a CATO reference standard with documented purity and traceability.
3-Ethylthiophene-2-carbaldehyde (C7H8OS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 3-Ethylthiophene-2-carbaldehyde 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 | C7H8OS |
| Molecular Weight | 140.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Sulfur Atoms | 1 |
Related Ethylthiophene Standards
- 2-Ethylthiophene-3-carbaldehyde (CAS 156386-50-4)
- 4-Ethylthiophene-3-carbaldehyde (CAS 197724-05-3)
- 5-Ethylthiophene-2-carbaldehyde (CAS 36880-33-8)
- 5-ethylthiophene-3-carbaldehyde (CAS 34669-00-6)
- 4-Ethylthiophene-3-carbonitrile (CAS 1469176-03-1)
- 2-Ethylthiophene-3-carbonitrile (CAS 500024-70-4)
- 5-Ethylthiophene-2-carbonitrile (CAS 22552-53-0)
- 5-Ethylthiophene-2-thiol (CAS 53381-57-0)
Recommended Standards
- 3,5-Dimethylthiophene-2-carbaldehyde (CAS 85895-83-6)
- 4-(Mercaptomethyl)phenol (CAS 89639-61-2)
- 3,4-Dimethylthiophene-2-carbaldehyde (CAS 343268-79-1)
- 4,5-Dimethylthiophene-2-carbaldehyde (CAS 5928-48-3)
- 2-(4-(((Benzyloxy)carbonyl)amino)bicyclo[2.2.2]Octan-1-yl)acetic acid (CAS 2231675-43-5)
- 1-(Azetidin-3-yl)piperidin-2-one dihydrochloride (CAS 2126177-75-9)
- 2-(2-Hydroxyethylamino)pyrimidine-5-boronic acid (CAS 2226087-09-6)
- 2-(but-3-en-1-yl)aniline (CAS 6992-97-8)
- 2,6-Dibromo-4,8-bis(n-octyloxy)benzo[1,2-b:4,5-b']-dithiophene (CAS 1294515-75-5)
- 4-3-(4-Iodophenyl)-2-(2,4-dinitrophenyl)-2H-5-tetrazolio-1,3-benzenedisulfonate sodium salt (CAS 161617-45-4)
- Atogepant Impurity 14 (CAS CATO-C4X-328514)
- Evocalcet impurity 49 (CAS CATO-C4X-248549)
- Ethyl 3-(4-bromo-5-methylfuran-2-yl)-3-oxopropanoate (CAS 1403564-11-3)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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