6-Ethenyldihydro-2,2,6-trimethyl-2H-pyran-3(4H)-one CAS 33933-72-1

Purity 97%+In StockPharmaceutical Standards
CAS No.33933-72-1
Molecular FormulaC10H16O2
Molecular Weight168.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

6-Ethenyldihydro-2,2,6-trimethyl-2H-pyran-3(4H)-one CAS 33933-72-1 chemical structure

Description

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.

6-Ethenyldihydro-2,2,6-trimethyl-2H-pyran-3(4H)-one (CAS 33933-72-1), molecular formula C10H16O2 and molecular weight 168.23 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 6-Ethenyldihydro-2,2,6-trimethyl-2H-pyran-3(4H)-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 168.23 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 FormulaC10H16O2
Molecular Weight168.23 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1966

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