Thiophene-3-carboxylic acid 1,1-dioxide CAS 1858240-97-7
| CAS No. | 1858240-97-7 |
| Molecular Formula | C5H4O4S |
| Molecular Weight | 160.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Thiophene-3-carboxylic acid 1,1-dioxide 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.
Thiophene-3-carboxylic acid 1,1-dioxide (CAS 1858240-97-7) is a high-purity analytical reference standard with the molecular formula C5H4O4S and a molecular weight of 160.15 g/mol.
Owing to a carbohydrate-derived structure, a sulfone group, Thiophene-3-carboxylic acid 1,1-dioxide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 160.15 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H4O4S |
| Molecular Weight | 160.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Sulfur Atoms | 1 |
Related Thiophene Standards
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Recommended Standards
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- (5-Nitroisothiazol-3-yl)methanol (CAS 2271348-91-3)
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- 3-(tert-Butyl)-1-((tetrahydrofuran-2-yl)methyl)-1H-pyrazol-5-ol (CAS 2092711-27-6)
- 2-(2-Chlorobenzamido)-3-hydroxybutanoic acid (CAS 1008206-36-7)
- tert-Butyl 8-iodooctanoate (CAS 179538-24-0)
- 6-Fluoropyrido[2,3-d]pyrimidine-2,4-diol (CAS 1220518-10-4)
- methyl 4-bromo-3-ethyl-2-nitrobenzoate (CAS 2711144-21-5)
- 3-Methyl-5-(trifluoromethyl)benzoic acid (CAS 117186-02-4)
- Tirzepatide Impurity 9 (CAS CATO-C4X-32409)
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