Methyl 4-cyanothiophene-2-carboxylate CAS 67808-33-7
| CAS No. | 67808-33-7 |
| Molecular Formula | C7H5NO2S |
| Molecular Weight | 167.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 4-cyanothiophene-2-carboxylate 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.
Methyl 4-cyanothiophene-2-carboxylate (CAS 67808-33-7) is a high-purity analytical reference standard with the molecular formula C7H5NO2S and a molecular weight of 167.19 g/mol.
Structurally, Methyl 4-cyanothiophene-2-carboxylate (C7H5NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 167.19 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C7H5NO2S |
| Molecular Weight | 167.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 2-cyanothiophene-3-carboxylate (CAS 67808-30-4)
- Methyl 4-cyanothiophene-3-carboxylate (CAS 67808-36-0)
- Methyl 5-cyanothiophene-2-carboxylate (CAS 67808-34-8)
- Ethyl 4-cyanothiophene-2-carboxylate (CAS 944901-15-9)
- Ethyl 5-cyanothiophene-2-carboxylate (CAS 67808-35-9)
- 5-Cyanothiophene-3-carboxylic acid (CAS 1211589-12-6)
- 2-Cyanothiophene-3-carboxylic acid (CAS 71154-34-2)
- 3-Cyanothiophene-2-carboxylic acid (CAS 58231-00-8)
Recommended Standards
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