5-Methylthiophene-3-carboxamide CAS 214040-89-8
| CAS No. | 214040-89-8 |
| Molecular Formula | C6H7NOS |
| Molecular Weight | 141.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Methylthiophene-3-carboxamide (CAS 214040-89-8), molecular formula C6H7NOS and molecular weight 141.19 g/mol, is a CATO reference standard with documented purity and traceability.
5-Methylthiophene-3-carboxamide (C6H7NOS) contains an amide group, 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).
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 | C6H7NOS |
| Molecular Weight | 141.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2018 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylthiophene Standards
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- (E)-5-methylthiophene-2-carbaldehyde oxime (CAS 42456-40-6)
- 3-Methylthiophene-2-carbaldehyde oxime (CAS 41056-90-0)
- 3-Methylthiophene-2-carboxamide (CAS 76655-99-7)
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Recommended Standards
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- 2-[4-(4-Nitrophenyl)piperazin-1-yl]ethyl N-[3-(trifluoromethyl)phenyl]carbamate (CAS 338748-63-3)
- 3-(6-Aminobenzo[E][1,2]benzoxazol-1-yl)piperidine-2,6-dione (CAS 2883704-45-6)
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- 5-Chloro-2-(1H-pyrazol-5-yl)aniline (CAS 15463-66-8)
- [D-His1]-Semaglutide (CAS CATO-C4X-2226127)
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