2-[Bis(2,6-dimethoxyphenyl)phosphino]benzenesulfonic acid CAS 920271-29-0
| CAS No. | 920271-29-0 |
| Molecular Formula | C22H23O7PS |
| Molecular Weight | 462.45 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.
2-[Bis(2,6-dimethoxyphenyl)phosphino]benzenesulfonic acid (CAS 920271-29-0) is a high-purity analytical reference standard with the molecular formula C22H23O7PS and a molecular weight of 462.45 g/mol.
Based on its molecular formula C22H23O7PS, 2-[Bis(2,6-dimethoxyphenyl)phosphino]benzenesulfonic acid contains a flavonoid core, a sulfone group, a phosphate ester group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 462.45 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 2-[Bis(2,6-dimethoxyphenyl)phosphino]benzenesulfonic 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 | C22H23O7PS |
| Molecular Weight | 462.45 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Sulfur Atoms | 1 |
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