(3H,5H)-Tetrahydrothiophene-2,4-Dione CAS 51338-33-1

Purity 97%+In StockPharmaceutical Standards
CAS No.51338-33-1
Molecular FormulaC4H4O2S
Molecular Weight116.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3H,5H)-Tetrahydrothiophene-2,4-Dione CAS 51338-33-1 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO supplies (3H,5H)-Tetrahydrothiophene-2,4-Dione (CAS 51338-33-1), a certified reference material (molecular formula C4H4O2S, MW 116.14 g/mol) for analytical method development and quality control.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, (3H,5H)-Tetrahydrothiophene-2,4-Dione is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 116.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

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 FormulaC4H4O2S
Molecular Weight116.14 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1971
Sulfur Atoms1

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