DL-4-Hydroxy-2-ketoglutaric Acid Lithium Salt CAS 1187-99-1 (free base)

Purity ≥95%In StockPharmaceutical Standards
CAS No.1187-99-1 (free base)
Molecular FormulaC5H6O6
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

DL-4-Hydroxy-2-ketoglutaric Acid Lithium Salt CAS 1187-99-1 (free base) chemical structure

Description

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

CATO supplies DL-4-Hydroxy-2-ketoglutaric Acid Lithium Salt (CAS 1187-99-1 (free base)), a certified reference material (molecular formula C5H6O6xLi+, MW 169.04 g/mol) for analytical method development and quality control.

The molecular framework of DL-4-Hydroxy-2-ketoglutaric Acid Lithium Salt (C5H6O6xLi+) is characterized by a carbohydrate-derived structure. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 FormulaC5H6O6 xLi+
Molecular Weight169.04 g/mol
Purity≥95%
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

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