| CAS No. | 6996-81-2 |
| Molecular Formula | C5H13O2PS |
| Molecular Weight | 168.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of O,O-Diethyl methylphosphonothioate is closely related to a sulfone group, organophosphorus functionality, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
O,O-Diethyl methylphosphonothioate (CAS 6996-81-2) is a high-purity analytical reference standard with the molecular formula C5H13O2PS and a molecular weight of 168.19 g/mol.
The molecular framework of O,O-Diethyl methylphosphonothioate (C5H13O2PS) is characterized by a sulfone group, organophosphorus functionality, a carboxylic acid group, a hydroxyl group, an ether linkage. 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.
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.
CATO manufactures O,O-Diethyl methylphosphonothioate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C5H13O2PS |
| Molecular Weight | 168.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| 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.) | 1958 |
| Sulfur Atoms | 1 |