3,4-Ethylenedioxythiophene-2,5-dicarboxylic acid CAS 18361-03-0
| CAS No. | 18361-03-0 |
| Molecular Formula | C8H6O6S |
| Molecular Weight | 230.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3,4-Ethylenedioxythiophene-2,5-dicarboxylic acid (CAS 18361-03-0), a certified reference material (molecular formula C8H6O6S, MW 230.19 g/mol) for analytical method development and quality control.
The molecular framework of 3,4-Ethylenedioxythiophene-2,5-dicarboxylic acid (C8H6O6S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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).
As a certified reference material (CRM), 3,4-Ethylenedioxythiophene-2,5-dicarboxylic 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 | C8H6O6S |
| Molecular Weight | 230.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 1 |
Related Ethylenedioxythiophene Standards
Recommended Standards
- (S)-4-Methyl-2-(5-(trifluoromethyl)pyridin-2-yl)-4,5-dihydrooxazole (CAS 1803416-27-4)
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- 1-Methyl-7-(trifluoromethyl)-1,2,3,4-tetrahydroquinoxalin-2-one (CAS 1783769-47-0)
- 6-Amino-8-(trifluoromethyl)-3,4-dihydroquinolin-2(1H)-one (CAS 1891169-88-2)
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- 1-Methylquinolin-1-ium (CAS 21979-19-1)
- Spiro[2.7]decan-4-one (CAS 935-61-5)
- 1-(6-(Chloromethyl)-4-(trifluoromethyl)pyridin-2-yl)ethan-1-one (CAS 1393582-45-0)
- (T-4)-Carbonyltris(triphenylphosphine)iridium (CAS 85688-70-6)
- 2-[(2-Chloro-6-fluorophenyl)methyl]-4-[(1E)-{[(3-methoxyphenyl)methyl]imino}methyl]benzene-1,3-diol (CAS 341967-51-9)
- 4-[(3-oxopiperazin-1-yl)sulfonyl]benzoic acid (CAS 926198-84-7)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
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