Date published: 2026-2-14

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DHDH Inhibitors

DHDH Inhibitors encompass a diverse set of compounds that impact the enzymatic activity of DHDH through various biochemical and cellular pathways. Disulfiram, by increasing acetaldehyde levels, can form adducts with DHDH, thus inhibiting its dehydrogenase function. Similarly, Chlorpromazine and Thioridazine can disrupt cellular redox states, which is critical for DHDH's catalytic activity, leading to its functional inhibition. Acetaminophen's metabolism produces reactive intermediates, which may deplete glutathione, a crucial antioxidant for maintaining the redox balance necessary for DHDH activity. Menadione's induction of oxidative stress through ROS production can oxidatively modify proteins like DHDH, hindering its activity. MDMA exacerbates this oxidative stress further, potentially affectingDHDH's enzymatic function, as it too is sensitive to the cellular redox environment.

The inhibition of DHDH can also be achieved indirectly through the modulation of cellular conditions and cofactors. Quercetin's chelating effect could limit the availability of essential metal ions, which are potentially necessary for DHDH's electron transfer processes. Methylene blue's redox cycling might disrupt the redox reactions involving DHDH, consequently inhibiting its activity. Allopurinol, being structurally similar to various dehydrogenase substrates, could interfere competitively with DHDH substrate binding, leading to reduced activity. 3-bromopyruvate can act as an alkylating agent, modifying key residues in the active site of DHDH and thus blocking its enzymatic function. Omeprazole, by altering the intracellular pH, can impair DHDH's activity since its optimal enzyme activity is pH-dependent. Lastly, sodium valproate's influence on protein acetylation status might affect DHDH's stability or function, culminating in its inhibition.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Disulfiram

97-77-8sc-205654
sc-205654A
50 g
100 g
$53.00
$89.00
7
(1)

Disulfiram is an aldehyde dehydrogenase inhibitor that increases acetaldehyde concentration, a product of ethanol metabolism. Elevated acetaldehyde can modify and inactivate proteins through adduct formation. DHDH, being a dehydrogenase, may be susceptible to similar inhibition through reactive aldehyde intermediates that could form adducts with the enzyme, thus inhibiting its activity.

Chlorpromazine

50-53-3sc-357313
sc-357313A
5 g
25 g
$61.00
$110.00
21
(1)

Chlorpromazine is a dopamine antagonist that also inhibits various enzymes. It can interfere with the electron transport chain, leading to altered cellular redox state. Since DHDH relies on a balanced redox state for proper enzymatic function, disruption of this balance can indirectly inhibit DHDH activity.

Thioridazine

50-52-2sc-473180
50 mg
$500.00
(0)

Thioridazine, like Chlorpromazine, is a dopamine antagonist with enzyme inhibitory properties. It alters the redox state within cells, which can affect DHDH function as it is sensitive to changes in the NAD+/NADH ratio, a key component of the redox state.

Acetaminophen

103-90-2sc-203425
sc-203425A
sc-203425B
5 g
100 g
500 g
$41.00
$61.00
$194.00
11
(1)

Acetaminophen is metabolized into reactive intermediates that can deplete glutathione levels. As DHDH requires a specific redox environment for its catalytic mechanism, glutathione depletion can result in oxidative stress, leading to indirect inhibition of DHDH activity.

Vitamin K3

58-27-5sc-205990B
sc-205990
sc-205990A
sc-205990C
sc-205990D
5 g
10 g
25 g
100 g
500 g
$26.00
$36.00
$47.00
$136.00
$455.00
3
(1)

Menadione undergoes redox cycling, producing reactive oxygen species (ROS) that can oxidize proteins and lipids. The increased oxidative stress can affect proteins like DHDH that are involved in redox reactions, potentially inhibiting its enzymatic activity.

Quercetin

117-39-5sc-206089
sc-206089A
sc-206089E
sc-206089C
sc-206089D
sc-206089B
100 mg
500 mg
100 g
250 g
1 kg
25 g
$11.00
$17.00
$110.00
$250.00
$936.00
$50.00
33
(2)

Quercetin is a flavonoid that acts as an antioxidant but also has the capacity to chelate metal ions. As DHDH is a flavoprotein that may rely on metal ions for proper electron transfer, metal chelation by quercetin can potentially inhibit its activity.

Methylene blue

61-73-4sc-215381B
sc-215381
sc-215381A
25 g
100 g
500 g
$43.00
$104.00
$328.00
3
(1)

Methylene blue is a redox cycler that can accept and donate electrons, disrupting normal redox reactions within cells. This disruption can impact the normal redox-dependent activity of DHDH, leading to its inhibition.

Allopurinol

315-30-0sc-207272
25 g
$131.00
(0)

Allopurinol is a xanthine oxidase inhibitor that can also influence other dehydrogenases by mimicking the structures of their substrates. By interfering with the normal substrate interaction of DHDH, allopurinol could indirectly inhibit its function.

Omeprazole

73590-58-6sc-202265
50 mg
$67.00
4
(1)

Omeprazole is a proton pump inhibitor that can increase intracellular pH. DHDH, being an enzyme with a pH-dependent activity profile, could be inhibited if intracellular pH shifts out of its optimal range.

Valproic Acid

99-66-1sc-213144
10 g
$87.00
9
(1)

Sodium valproate is a histone deacetylase inhibitor that alters gene expression and protein acetylation status. As DHDH is a protein, changes in acetylation can modify its function or stability, leading to indirect inhibition.