2-Hydroxybut-3-ynoic acid CAS 38628-65-8

Purity 97%+In StockPharmaceutical Standards
CAS No.38628-65-8
Molecular FormulaC4H4O3
Molecular Weight100.07 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Hydroxybut-3-ynoic acid CAS 38628-65-8 chemical structure

Description

As a certified reference material (CRM), 2-Hydroxybut-3-ynoic 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.

2-Hydroxybut-3-ynoic acid (CAS 38628-65-8) is a high-purity analytical reference standard with the molecular formula C4H4O3 and a molecular weight of 100.07 g/mol.

2-Hydroxybut-3-ynoic acid (C4H4O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).

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.

Physical & Chemical Properties

Molecular FormulaC4H4O3
Molecular Weight100.07 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.)1968

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