Diethyl Sulfite CAS 623-81-4

Purity >95%In StockPharmaceutical Standards
CAS No.623-81-4
Molecular FormulaC4H10O3S
Molecular Weight138.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Diethyl Sulfite CAS 623-81-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 138.19 g/mol gives Diethyl Sulfite distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Diethyl Sulfite (CAS 623-81-4), molecular formula C4H10O3S and molecular weight 138.19 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Diethyl Sulfite (C4H10O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 0.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 138.19 g/mol, it falls into the low-molecular-weight range.

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 FormulaC4H10O3S
Molecular Weight138.19 g/mol
Purity>95%
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)1957
Sulfur Atoms1

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