4-ethynylbenzoic acid;sodium salt CAS 144693-65-2

Purity 97%+In StockPharmaceutical Standards
CAS No.144693-65-2
Molecular FormulaC9H12O2
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-ethynylbenzoic acid;sodium salt CAS 144693-65-2 chemical structure

Description

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.

4-ethynylbenzoic acid;sodium salt (CAS 144693-65-2) is a high-purity analytical reference standard with the molecular formula C9H12O2HNa and a molecular weight of 176.19 g/mol.

4-ethynylbenzoic acid;sodium salt (C9H12O2HNa) 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.

Physical & Chemical Properties

Molecular FormulaC9H12O2 HNa
Molecular Weight176.19 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)3.5
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1998

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