All Photos(5)



Oxaloacetic acid

≥97% (HPLC)

Oxalacetic acid, Ketosuccinic acid, Oxobutanedioic acid, 2-Oxosuccinic acid
Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


≥97% (HPLC)




H2O: 100 mg/mL, clear to slightly hazy, colorless to light yellow

storage temp.


SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide

General description

Oxaloacetic acid is a dicarboxylic acid. It is an intermediate in the citric acid cycle. It is highly soluble in water and is present ubiquitously. It is produced in the mitochondria by the action of pyruvate carboxylase on pyruvate. Breakdown products of oxaloacetate includes malate, pyruvate and aspartic acid.


Oxaloacetic acid has been used as a substrate for measuring citrate synthase activity in cybrids and neuroblastoma cells. It has also been used for measuring malate dehydrogenase reactivation.


1, 5, 25, 100 g in poly bottle

Biochem/physiol Actions

Oxaloacetic acid being an intermediate in the tri carboxylic cycle is central to metabolism. It is part of gluconeogenesis pathway. Mutation in pyruvate carboxylase leads to decreased production of oxaloacetate. It inhibits succinate dehydrogenase and is a key regulator of mitochondrial metabolism.


Exclamation mark

Signal Word


Hazard Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

8B - Non-combustible, corrosive hazardous materials



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Oxaloacetic acid mediates ADP-dependent inhibition of mitochondrial complex IIdriven respiration
Fink BD, et al.
The Journal of Biological Chemistry, 293(51), 1993219941-1993219941 (2018)
Synergistic coordination of polyethylene glycol with ClpB/DnaKJE bichaperone for refolding of heat-denatured malate dehydrogenase
Nian R, et al.
Biotechnology Progress, 25(4), 10781085-10781085 (2009)
Oxaloacetic acid supplementation as a mimic of calorie restriction
Cash A
Open Longevity Science, 3, 2227-2227 (2009)
Alexander K H Weiss et al.
Bioscience reports, 40(3) (2020-02-19)
FAH domain containing protein 1 (FAHD1) is a mammalian mitochondrial protein, displaying bifunctionality as acylpyruvate hydrolase (ApH) and oxaloacetate decarboxylase (ODx) activity. We report the crystal structure of mouse FAHD1 and structural mapping of the active site of mouse FAHD1.
MitoTALEN: a general approach to reduce mutant mtDNA loads and restore oxidative phosphorylation function in mitochondrial diseases
Hashimoto M, et al.
Molecular Therapy, 23(10), 15921599-15921599 (2015)


The Krebs Cycle — Harnessing Chemical Energy for Cellular Respiration

Get to know the Tricarboxylic acid (TCA) cycle to better inform your research in biochemistry, metabolomics, or related fields concerned with this metabolic pathway and its enzymes, by-products, or intermediates.

Fatty Acid Synthesis and Metabolism in Cancer Cells

Information on fatty acid synthesis and metabolism in cancer cells. Learn how proliferatively active cells require fatty acids for functions such as membrane generation, protein modification, and bioenergetic requirements. These fatty acids are derived either from dietary sources or are synthesized by the cell.


Enzymatic Assay of Malic Dehydrogenase (EC

This is a protocol to be used for all Malic Dehydrogenase products.

Related Content

Monosaccharide Biosynthesis

Learn about monosaccharide biosynthesis and the metabolism of monosaccharides. A unit of a carbohydrate and the simplest form of a sugar, a monosaccharide cannot be hydrolyzed into a simpler compound.

Glutamine Metabolism is Dysregulated in Many Cancer Cells

This is an article about how proliferatively active cells require both a source of carbon and of nitrogen for the synthesis of macromolecules. Although a large proportion of tumor cells utilize aerobic glycolysis and shunt metabolites away from mitochondrial oxidative phosphorylation, many tumor cells exhibit increased mitochondrial activity.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service