Date published: 2026-5-2

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MPST Inhibitors

MPST inhibitors belong to a class of chemical compounds specifically designed to target and inhibit the activity of MPST (3-mercaptopyruvate sulfurtransferase). MPST is an enzyme that plays a significant role in sulfur metabolism within cells. It catalyzes the transfer of sulfur atoms from 3-mercaptopyruvate to sulfide, producing pyruvate and hydrogen sulfide (H2S). H2S is a signaling molecule involved in various cellular processes, including vasodilation, neurotransmission, and anti-inflammatory responses. By inhibiting the activity of MPST, these compounds may disrupt the generation of H2S, which can have downstream effects on cellular signaling pathways and physiological processes regulated by H2S.

The development and exploration of MPST inhibitors are motivated by the desire to gain a deeper understanding of the role of H2S in cellular signaling and its impact on health and disease. By selectively inhibiting MPST, researchers can study the effects of reduced H2S levels in different biological contexts. Identifying and characterizing MPST inhibitors provide valuable tools for investigating the role of H2S in various cellular processes and offer insights into the complexities of sulfur metabolism. Through extensive investigation and experimentation, MPST inhibitors have the ability to contribute to a better understanding of the functional significance of H2S in cellular regulation. Characterizing MPST inhibitors is a crucial step in deciphering the intricate interplay between sulfur metabolism and cellular physiology. These inhibitors serve as essential pharmacological agents to study the biological consequences of inhibiting MPST and manipulating H2S levels. The identification and characterization of MPST inhibitors represent an ongoing effort to advance our knowledge of sulfur metabolism and its impact on cellular function.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

DL-Propargylglycine

64165-64-6sc-294408
sc-294408A
1 g
5 g
$172.00
$692.00
(0)

PAG is an irreversible inhibitor of cystathionine gamma-lyase (CSE), reducing production of H2S. Decreased H2S production can reduce potential feedback activation of MPST, indirectly limiting its activity.

N,N-Dimethyl-p-phenylenediamine

99-98-9sc-255369
sc-255369A
5 g
100 g
$48.00
$156.00
(0)

DMPD reacts with H2S to form a methylene blue-like compound, effectively decreasing H2S levels. Reduced levels of H2S can indirectly inhibit MPST by diminishing the potential feedback activation.

Oxythiamine chloride hydrochloride

614-05-1sc-236265
sc-236265A
sc-236265B
1 g
5 g
25 g
$40.00
$121.00
$446.00
2
(0)

Oxythiamine is a thiamine (vitamin B1) antagonist. Given that thiamine is a cofactor for MPST, the presence of Oxythiamine Hydrochloride can indirectly inhibit the enzyme by competing with thiamine.

Hydroxylamine solution

7803-49-8sc-250136
100 ml
$72.00
(0)

Hydroxylamine is a potent inhibitor of pyridoxal phosphate-dependent enzymes. As MPST is a pyridoxal phosphate-dependent enzyme, hydroxylamine can inhibit its activity.

Zileuton

111406-87-2sc-204417
sc-204417A
sc-204417B
sc-204417C
10 mg
50 mg
1 g
75 g
$84.00
$307.00
$369.00
$1254.00
8
(1)

Zileuton is a 5-lipoxygenase inhibitor that reduces the production of leukotrienes. Indirectly, it can suppress the upregulation of MPST that is associated with leukotriene-induced inflammation.

Indomethacin

53-86-1sc-200503
sc-200503A
1 g
5 g
$29.00
$38.00
18
(1)

Indomethacin is a non-steroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX). It can indirectly inhibit MPST by reducing the production of pro-inflammatory mediators that upregulate MPST.

Niflumic acid

4394-00-7sc-204820
5 g
$32.00
3
(1)

Niflumic acid is a non-steroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX). It can indirectly inhibit MPST by reducing the production of pro-inflammatory mediators that upregulate MPST.

Acetaminophen

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

Acetaminophen is an analgesic and antipyretic that can reduce the production of pro-inflammatory mediators. This can indirectly inhibit MPST by suppressing the upregulation of the enzyme in response to inflammatory signals.

Aspirin

50-78-2sc-202471
sc-202471A
5 g
50 g
$20.00
$42.00
4
(1)

Aspirin is a non-steroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX). It can indirectly inhibit MPST by reducing the production of pro-inflammatory mediators that upregulate MPST.