(E)-Penta-2,4-dienoic acid CAS 21651-12-7

Purity 97%+In StockPharmaceutical Standards
CAS No.21651-12-7
Molecular FormulaC5H6O2
Molecular Weight98.10 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(E)-Penta-2,4-dienoic acid CAS 21651-12-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 98.10 g/mol gives (E)-Penta-2,4-dienoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(E)-Penta-2,4-dienoic acid (CAS 21651-12-7), molecular formula C5H6O2 and molecular weight 98.10 g/mol, is a CATO reference standard with documented purity and traceability.

(E)-Penta-2,4-dienoic acid (C5H6O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).

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

As a certified reference material (CRM), (E)-Penta-2,4-dienoic acid 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.

Physical & Chemical Properties

Molecular FormulaC5H6O2
Molecular Weight98.10 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.)1963

Related E Standards

Recommended Standards

Why CATO?