Date published: 2025-10-15

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Catalase Inhibitors

Catalase is a crucial antioxidant enzyme found in nearly all living organisms, including humans. Its primary function is to catalyze the decomposition of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2), thereby preventing the accumulation of toxic levels of hydrogen peroxide within cells. This enzymatic reaction serves to protect cells from oxidative damage caused by reactive oxygen species (ROS), which are natural byproducts of metabolic processes. Catalase plays a vital role in maintaining cellular homeostasis and protecting cellular components such as proteins, lipids, and DNA from oxidative stress-induced damage. Furthermore, catalase is particularly abundant in peroxisomes, cellular organelles responsible for lipid metabolism and detoxification, emphasizing its crucial role in cellular defense mechanisms against oxidative stress. Inhibition of catalase activity can occur through various mechanisms, ultimately leading to an imbalance in cellular redox status and increased susceptibility to oxidative damage. One common mechanism of inhibition involves the binding of specific molecules or ions to the catalytic site of the enzyme, thereby preventing the substrate (hydrogen peroxide) from accessing the active site and undergoing enzymatic decomposition. Additionally, inhibition of catalase activity may result from modifications to the enzyme structure or its cofactors, hindering its catalytic function. Furthermore, changes in cellular conditions such as alterations in pH, temperature, or the presence of competitive inhibitors can also modulate catalase activity. Overall, inhibition of catalase can disrupt cellular antioxidant defenses, leading to oxidative stress-related pathologies and contributing to the progression of various diseases associated with oxidative damage, including neurodegenerative disorders, cardiovascular diseases, and cancer.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

3-Amino-1,2,4-triazole

61-82-5sc-202016
sc-202016A
10 g
100 g
$51.00
$153.00
5
(2)

3-Amino-1,2,4-triazole exhibits remarkable catalytic properties, particularly in its ability to facilitate the decomposition of hydrogen peroxide. This compound engages in specific electron transfer mechanisms, enhancing reaction kinetics through the formation of transient intermediates. Its unique nitrogen-rich structure allows for strong hydrogen bonding interactions, which stabilize reactive species and promote efficient catalysis. Additionally, its solubility characteristics enable effective interaction with substrates, optimizing enzymatic activity in various environments.

Manganese peroxidase

114995-15-2sc-211772
sc-211772A
10 mg
100 mg
$360.00
$1600.00
1
(1)

Manganese peroxidase is a versatile enzyme that catalyzes the breakdown of hydrogen peroxide through a unique mechanism involving manganese ions. It operates via a series of redox reactions, where the enzyme's active site facilitates electron transfer, leading to the formation of reactive intermediates. The enzyme's structural flexibility allows it to adapt to varying substrate concentrations, enhancing its catalytic efficiency. Its ability to form stable complexes with substrates further optimizes its reactivity, making it a key player in oxidative processes.

Bis(3-aminopropyl) Ether

2157-24-6sc-507575
5 g
$1000.00
(0)

Sodium azide

26628-22-8sc-208393
sc-208393B
sc-208393C
sc-208393D
sc-208393A
25 g
250 g
1 kg
2.5 kg
100 g
$42.00
$152.00
$385.00
$845.00
$88.00
8
(2)

Sodium azide acts as a catalase inhibitor by binding to the enzyme's heme group, disrupting its catalytic activity. This direct inhibition hampers catalase's ability to decompose hydrogen peroxide, leading to an accumulation of this reactive oxygen species in cells.

2-Methoxyestradiol

362-07-2sc-201371
sc-201371A
10 mg
50 mg
$70.00
$282.00
6
(1)

2-Methoxyestradiol inhibits catalase indirectly by promoting oxidative stress. Through its ability to generate reactive oxygen species, this compound induces cellular conditions that challenge catalase's antioxidant function, affecting its enzymatic activity.

p-Aminobenzoic acid, Free Acid

150-13-0sc-208143B
sc-208143A
sc-208143
25 g
250 g
50 g
$35.00
$127.00
$47.00
(0)

4-Aminobenzoic acid inhibits catalase by acting as a competitive antagonist. This direct inhibition occurs through interference with the enzyme′s active site, reducing its efficiency in decomposing hydrogen peroxide and impacting cellular redox balance.

DMSA (Meso-2,3-dimercaptosuccinic acid)

304-55-2sc-204732
sc-204732A
1 g
5 g
$37.00
$92.00
1
(0)

Mercaptosuccinic acid inhibits catalase by forming a complex with the enzyme. This direct inhibition disrupts the active site, impairing catalase's ability to detoxify hydrogen peroxide. Consequently, cellular redox homeostasis is affected due to the accumulation of reactive oxygen species.

Tetramethylthiuram disulfide

137-26-8sc-258239
sc-258239A
5 g
100 g
$36.00
$92.00
(0)

Tetramethylthiuram disulfide inhibits catalase activity indirectly by promoting oxidative stress. The compound induces the generation of reactive oxygen species, challenging catalase′s antioxidant function and leading to impaired hydrogen peroxide decomposition, impacting cellular redox homeostasis.

Hydroxylamine solution

7803-49-8sc-250136
100 ml
$71.00
(0)

Hydroxylamine inhibits catalase activity by reacting with the enzyme's active site residues. This direct inhibition disrupts the catalytic function of catalase, impairing its ability to decompose hydrogen peroxide and leading to elevated oxidative stress within cells.

Pyruvic acid

127-17-3sc-208191
sc-208191A
25 g
100 g
$40.00
$94.00
(0)

Pyruvate inhibits catalase activity indirectly by modulating cellular redox status. The compound influences the balance of reactive oxygen species, affecting the substrate availability for catalase. This indirect modulation impacts catalase's function in detoxifying hydrogen peroxide, leading to altered cellular redox homeostasis.