3,5-Diiodothiophene-2-carboxylic acid CAS 1389313-38-5
| CAS No. | 1389313-38-5 |
| Molecular Formula | C5H2I2O2S |
| Molecular Weight | 379.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 379.94 g/mol gives 3,5-Diiodothiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3,5-Diiodothiophene-2-carboxylic acid (CAS 1389313-38-5) is a high-purity analytical reference standard with the molecular formula C5H2I2O2S and a molecular weight of 379.94 g/mol.
The molecular framework of 3,5-Diiodothiophene-2-carboxylic acid (C5H2I2O2S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 3,5-Diiodothiophene-2-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 | C5H2I2O2S |
| Molecular Weight | 379.94 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
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