Diethyl phenylphosphonite CAS 1638-86-4
| CAS No. | 1638-86-4 |
| Molecular Formula | C10H15O2P |
| Molecular Weight | 198.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 198.20 g/mol gives Diethyl phenylphosphonite distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Diethyl phenylphosphonite (CAS 1638-86-4), a certified reference material (molecular formula C10H15O2P, MW 198.20 g/mol) for analytical method development and quality control.
Diethyl phenylphosphonite (C10H15O2P) contains organophosphorus functionality, a carboxylic acid group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, 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.
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 | C10H15O2P |
| Molecular Weight | 198.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
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- (2-Chloro-4-fluorophenyl)(cyclobutyl)methanone (CAS 898791-03-2)
- 1,1,1,5,5,5-Hexafluoro-2-hydroxy-2-methylpentan-4-one (CAS 649-65-0)
- 1-(1,3-thiazol-4-ylmethyl)piperidin-4-amine (CAS 933760-12-4)
- 2-amino-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid (CAS 10128-06-0)
- 1,4-Bis(4-bromophenoxy)-2,5-dimethylhexane-2,5-diol (CAS 186498-09-9)
- Semaglutide impurity 34 (CAS CATO-C4X-222634)
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