4-Cyanothiophene-3-carboxylic acid CAS 78071-34-8
| CAS No. | 78071-34-8 |
| Molecular Formula | C6H3NO2S |
| Molecular Weight | 153.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Cyanothiophene-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.
4-Cyanothiophene-3-carboxylic acid (CAS 78071-34-8), molecular formula C6H3NO2S and molecular weight 153.16 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 4-Cyanothiophene-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 153.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C6H3NO2S |
| Molecular Weight | 153.16 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.) | 1979 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Cyanothiophene Standards
- 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)
- 4-Cyanothiophene-2-carboxylic acid (CAS 406719-77-5)
- 5-Cyanothiophene-2-carboxylic Acid (CAS 59786-39-9)
- 5-Cyanothiophene-2-carboxamide (CAS 67808-45-1)
- Methyl 2-cyanothiophene-3-carboxylate (CAS 67808-30-4)
- Methyl 4-cyanothiophene-2-carboxylate (CAS 67808-33-7)
Recommended Standards
- 4H,5H,6H-thieno[3,4-c]pyrrole-4,6-dione (CAS 6007-82-5)
- 4-Oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 23945-49-5)
- 3-azidothiophene-2-carbaldehyde (CAS 56473-97-3)
- 2-Furoyl isothiocyanate (CAS 80440-95-5)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
- 2-Chloro-5-(tributylstannyl)pyrimidine (CAS 155191-68-7)
- Sodium (E)-4,6-dichloro-3-(3-oxo-3-(phenylamino)prop-1-en-1-yl)-1H-indole-2-carboxylate (CAS 153436-38-5)
- 1-Methylimidazole-d6 (CAS 285978-27-0)
- 2-Chloro-N-(4-methyl-2-oxo-2H-chromen-7-yl)acetamide (CAS 79925-67-0)
- Boc-Gly-Met (CAS 51529-39-6)
- N-(3,5-Dichloro-2-methoxyphenyl)-4-methoxy-3-(piperazin-1-yl)benzenesulfonamide (CAS 402713-80-8)
- Ixazomib Impurity 78 (CAS CATO-C4X-126778)
- 3-Oxo-1-(trifluoromethyl)cyclobutanecarboxylic acid (CAS 1803610-99-2)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com