10498-56-3 CTK4A3544 Phosphonous dichloride,P,P'-1,4-phenylenebis- CAS 10498-56-3
| CAS No. | 10498-56-3 |
| Molecular Formula | C6H4Cl4P2 |
| Molecular Weight | 279.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H4Cl4P2, 10498-56-3 CTK4A3544 Phosphonous dichloride,P,P'-1,4-phenylenebis- contains organophosphorus functionality, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 279.86 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
10498-56-3 CTK4A3544 Phosphonous dichloride,P,P'-1,4-phenylenebis- (CAS 10498-56-3), molecular formula C6H4Cl4P2 and molecular weight 279.86 g/mol, is a CATO reference standard with documented purity and traceability.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H4Cl4P2 |
| Molecular Weight | 279.86 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |
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