4-Cyclopentene-1,3-dione CAS 39151-19-4

Purity >95%In StockPharmaceutical Standards
CAS No.39151-19-4
Molecular FormulaC5H4O2
Molecular Weight96.08 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Cyclopentene-1,3-dione CAS 39151-19-4 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.

4-Cyclopentene-1,3-dione (CAS 39151-19-4), molecular formula C5H4O2 and molecular weight 96.08 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 4-Cyclopentene-1,3-dione is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 96.08 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).

CATO manufactures 4-Cyclopentene-1,3-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC5H4O2
Molecular Weight96.08 g/mol
Purity>95%
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)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1968

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Why CATO?