5H-Thiopyrano[3,4-b]furan-4(7H)-one CAS 6881-51-2

Purity 97%+In StockPharmaceutical Standards
CAS No.6881-51-2
Molecular FormulaC7H6O2S
Molecular Weight154.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5H-Thiopyrano[3,4-b]furan-4(7H)-one CAS 6881-51-2 chemical structure

Description

As a certified reference material (CRM), 5H-Thiopyrano[3,4-b]furan-4(7H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

5H-Thiopyrano[3,4-b]furan-4(7H)-one (CAS 6881-51-2) is a high-purity analytical reference standard with the molecular formula C7H6O2S and a molecular weight of 154.19 g/mol.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 5H-Thiopyrano[3,4-b]furan-4(7H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 154.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

Physical & Chemical Properties

Molecular FormulaC7H6O2S
Molecular Weight154.19 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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958
Sulfur Atoms1

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