| CAS No. | 63525-20-2 |
| Molecular Formula | C4H9Cl2OPS |
| Molecular Weight | 207.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 207.06 g/mol gives S-sec-Butyl Phosphorothioic Dichloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
S-sec-Butyl Phosphorothioic Dichloride (CAS 63525-20-2) is a high-purity analytical reference standard with the molecular formula C4H9Cl2OPS and a molecular weight of 207.06 g/mol.
Based on its molecular formula C4H9Cl2OPS, S-sec-Butyl Phosphorothioic Dichloride contains sulfur-containing functionality, organophosphorus functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 207.06 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.
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.
| Molecular Formula | C4H9Cl2OPS |
| Molecular Weight | 207.06 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -0.5 |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |