4,5-dihydrothiophene-2-carboxylic acid CAS 86610-33-5
| CAS No. | 86610-33-5 |
| Molecular Formula | C5H6O2S |
| Molecular Weight | 130.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4,5-dihydrothiophene-2-carboxylic acid (CAS 86610-33-5), molecular formula C5H6O2S and molecular weight 130.16 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,5-dihydrothiophene-2-carboxylic acid (C5H6O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO manufactures 4,5-dihydrothiophene-2-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.
Physical & Chemical Properties
| Molecular Formula | C5H6O2S |
| Molecular Weight | 130.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1981 |
| Sulfur Atoms | 1 |
Related dihydrothiophene Standards
- 2,5-dihydrothiophene-3-carboxylic acid (CAS 98508-62-4)
- 3-Methyl-2,5-dihydrothiophene-1,1-dioxide (CAS 1193-10-8)
- 2-Methyl-2,5-dihydrothiophene 1,1-dioxide (CAS 6007-71-2)
- 4-Methyl-2,3-dihydrothiophene 1,1-Dioxide (CAS 872-94-6)
- 2,3-Dihydrothiophene-3-ol 1,1-dioxide (CAS 6211-59-2)
- 2,3-dihydrothiophene 1,1-dioxide (CAS 1192-16-1)
- Dihydrothiophene-2,5-dione (CAS 3194-60-3)
- Methyl 2,5-dihydrothiophene-3-carboxylate (CAS 67488-46-4)
Recommended Standards
- 3-Ethynylthietane 1,1-dioxide (CAS 2168206-78-6)
- 4-Fluoro-4-methylcyclohexan-1-one (CAS 82953-31-9)
- 3-Ethynyl-3-hydroxythietane 1-oxide (CAS 2621398-42-1)
- 4-Fluorobicyclo[2.2.1]Heptan-1-ol (CAS 84553-46-8)
- Tert-butyl 5-benzyl-7-oxo-2,5,8-triazaspiro[3.5]Nonane-2-carboxylate (CAS 1936638-61-7)
- SB 657510 (CAS 474960-44-6)
- 2-(5-Amino-1-methyl-3-(pyridin-3-yl)-1H-pyrazol-4-yl)acetic acid (CAS 1708026-23-6)
- OtBu-Ste-L-Glu-AEEA-AEEA-β-Ala-OSu (CAS CATO-CPTD788787)
- 6-Chloro-N-(4-chlorophenyl)-2,3,4,9-tetrahydro-1H-carbazol-1-amine (CAS 812649-17-5)
- Methyl ((4-fluorophenyl)sulfonyl)glycinate (CAS 346696-78-4)
- 3-(4-Benzyl-1-methylpiperazin-2-yl)-[1,2,4]triazolo[4,3-a]pyridine-6-carboxylic acid (CAS 1422069-61-1)
- 2,2-Dimethyl-2H-chromene (CAS 2513-25-9)
- N-(1,1-Dihydroperfluorooctyl)pyridinium trifluoromethanesulfonate (CAS 25061-59-0)
- Protein Kinase C (19-36) Peptide (CAS 113731-96-7)
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