2,5-dihydrothiophene-3-carboxylic acid CAS 98508-62-4
| CAS No. | 98508-62-4 |
| Molecular Formula | C5H6O2S |
| Molecular Weight | 130.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,5-dihydrothiophene-3-carboxylic acid.
2,5-dihydrothiophene-3-carboxylic acid (CAS 98508-62-4) is a high-purity analytical reference standard with the molecular formula C5H6O2S and a molecular weight of 130.16 g/mol.
The molecular framework of 2,5-dihydrothiophene-3-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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,5-dihydrothiophene-3-carboxylic acid 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.
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.) | 1985 |
| Sulfur Atoms | 1 |
Related dihydrothiophene Standards
- 4,5-dihydrothiophene-2-carboxylic acid (CAS 86610-33-5)
- 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
- 1-Ethyl-2-fluoro-3-methyl-2,3-dihydro-1H-imidazole (CAS 518361-20-1)
- 2-Fluoro-4-methyl-cyclohexanone (CAS 696-03-7)
- 1-Cyclopentyl-2-fluoroethanone (CAS 823-44-9)
- 3-Ethynyl-3-hydroxythietane 1-oxide (CAS 2621398-42-1)
- 1-(5-((Cyanomethyl)thio)-1,3,4-thiadiazol-2-yl)-3-(thiophen-2-yl)urea (CAS 1001830-53-0)
- 3-Benzyl-5-(4-chlorobenzylidene)-2-thioxothiazolidin-4-one (CAS 23509-49-1)
- 5-(3-Fluorophenoxy)-1,2,3,4-tetrahydroisoquinolin-8-amine (CAS 1251924-93-2)
- 3,5-Dichloro-2-nitroacetophenone (CAS 1807181-10-7)
- 5,8-Dihydro-5,8-methanoquinoline (CAS 108744-29-2)
- 2-(4-(Aminomethyl)-2-(difluoromethyl)-5-(trifluoromethyl)pyridin-3-yl)acetic acid (CAS 1361813-27-5)
- Isavuconazole Impurity 45 (CAS 219872-85-2)
- 2-((3-Ethyl-4-oxo-3,4-dihydroquinazolin-2-yl)thio)acetic acid (CAS 462067-13-6)
- 5,6-Dichloronicotinamide (CAS 75291-84-8)
- Liraglutide Impurity 13 TFA Salt (CAS CATO-C4X-199213)
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