5-Hydroxy-4-methyl-2H-pyran-3(6H)-one CAS 61363-76-6

Purity 97%+In StockPharmaceutical Standards
CAS No.61363-76-6
Molecular FormulaC6H8O3
Molecular Weight128.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Hydroxy-4-methyl-2H-pyran-3(6H)-one CAS 61363-76-6 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.

5-Hydroxy-4-methyl-2H-pyran-3(6H)-one (CAS 61363-76-6), molecular formula C6H8O3 and molecular weight 128.13 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 5-Hydroxy-4-methyl-2H-pyran-3(6H)-one (C6H8O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 128.13 g/mol, it falls into the low-molecular-weight range. 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 FormulaC6H8O3
Molecular Weight128.13 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1974

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