Bis(trimethylsilyl) Methylphosphonate CAS 18279-83-9

Purity 97%+In StockPharmaceutical Standards
CAS No.18279-83-9
Molecular FormulaC7H21O3PSi2
Molecular Weight240.38 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Bis(trimethylsilyl) Methylphosphonate CAS 18279-83-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 240.38 g/mol gives Bis(trimethylsilyl) Methylphosphonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Bis(trimethylsilyl) Methylphosphonate (CAS 18279-83-9), molecular formula C7H21O3PSi2 and molecular weight 240.38 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C7H21O3PSi2, Bis(trimethylsilyl) Methylphosphonate contains a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 240.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

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 FormulaC7H21O3PSi2
Molecular Weight240.38 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)-2.5
CAS Registry Year (est.)1962

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Why CATO?