| CAS No. | 2361970-76-3 |
| Molecular Formula | C7H9O3PS |
| Molecular Weight | 204.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 204.18 g/mol gives 5-(Dimethylphosphoryl)thiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(Dimethylphosphoryl)thiophene-2-carboxylic acid (CAS 2361970-76-3), molecular formula C7H9O3PS and molecular weight 204.18 g/mol, is a CATO reference standard with documented purity and traceability.
5-(Dimethylphosphoryl)thiophene-2-carboxylic acid (C7H9O3PS) contains a sulfone group, a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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), 5-(Dimethylphosphoryl)thiophene-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.
| Molecular Formula | C7H9O3PS |
| Molecular Weight | 204.18 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1999 |
| Sulfur Atoms | 1 |