3-Hydroxy-3-methyl-2-oxobutanoic acid CAS 6546-31-2

Purity 97%+In StockPharmaceutical Standards
CAS No.6546-31-2
Molecular FormulaC5H8O4
Molecular Weight132.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Hydroxy-3-methyl-2-oxobutanoic acid CAS 6546-31-2 chemical structure

Description

3-Hydroxy-3-methyl-2-oxobutanoic acid (CAS 6546-31-2), molecular formula C5H8O4 and molecular weight 132.11 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3-Hydroxy-3-methyl-2-oxobutanoic acid (C5H8O4) contains a carbohydrate-derived structure. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 132.11 g/mol, it falls into the low-molecular-weight range.

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.

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 FormulaC5H8O4
Molecular Weight132.11 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1958

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