Date published: 2026-6-9

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FMO3 Inhibitors

FMO3 inhibitors are chemical compounds that target the FMO3 (Flavin-containing monooxygenase 3) enzyme. FMO3 is a member of the flavin-containing monooxygenase family of enzymes, primarily found in the liver and other tissues, and it plays a significant role in xenobiotic metabolism and the detoxification of various exogenous compounds. FMO3 catalyzes the oxygenation of nucleophilic sulfur, nitrogen, and phosphorus centers present in a wide range of substrates, including dietary amines and pharmaceutical drugs, rendering them more hydrophilic and facilitating their excretion from the body.

Inhibitors of FMO3 modulate the enzyme's activity, potentially interfering with its ability to metabolize specific compounds. These inhibitors may operate through various mechanisms, such as binding to FMO3's active site, disrupting its cofactor-binding sites, or altering its conformation. By inhibiting FMO3, these compounds can impact the metabolism and disposition of various xenobiotics, potentially influencing their bioavailability, toxicity, and elimination kinetics. Research on FMO3 inhibitors is primarily centered around understanding the role of this enzyme in xenobiotic metabolism and exploring its implications for drug interactions and toxicology.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Methimazole

60-56-0sc-205747
sc-205747A
10 g
25 g
$70.00
$112.00
4
(0)

Acts as a substrate and inhibitor for FMO3 and may lead to decreased FMO3 activity via competitive inhibition or potential downregulation.

1-Aminobenzotriazole

1614-12-6sc-200600
sc-200600A
50 mg
100 mg
$61.00
$134.00
6
(0)

Known as a nonspecific mechanism-based inhibitor of cytochrome P450 enzymes, potentially affecting FMO3 expression by altering hepatic enzyme balance.

Tranylcypromine

13492-01-8sc-200572
sc-200572A
1 g
5 g
$175.00
$599.00
5
(1)

An irreversible inhibitor of monoamine oxidase; it could also affect FMO3 expression through secondary effects on hepatic metabolism regulation.

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)

A flavonoid that influences various signaling pathways and may modulate the expression of enzymes like FMO3 through epigenetic effects.

Indole-3-carbinol

700-06-1sc-202662
sc-202662A
sc-202662B
sc-202662C
sc-202662D
1 g
5 g
100 g
250 g
1 kg
$39.00
$61.00
$146.00
$312.00
$1032.00
5
(1)

Modifies estrogen metabolism and affects various liver enzymes, potentially leading to altered FMO3 expression.

Clotrimazole

23593-75-1sc-3583
sc-3583A
100 mg
1 g
$42.00
$57.00
6
(2)

An antifungal compound that inhibits cytochrome P450 enzymes, it could indirectly affect FMO3 expression through changes in hepatic metabolism.

Ketoconazole

65277-42-1sc-200496
sc-200496A
50 mg
500 mg
$63.00
$265.00
21
(1)

A broad cytochrome P450 enzyme inhibitor, which can potentially alter the expression of other hepatic enzymes like FMO3.

D,L-Sulforaphane

4478-93-7sc-207495A
sc-207495B
sc-207495C
sc-207495
sc-207495E
sc-207495D
5 mg
10 mg
25 mg
1 g
10 g
250 mg
$153.00
$292.00
$489.00
$1325.00
$8465.00
$933.00
22
(1)

Has been shown to affect the expression of various detoxifying enzymes and may influence FMO3 expression through antioxidant response pathways.

Piperine

94-62-2sc-205809
sc-205809A
5 g
25 g
$37.00
$146.00
3
(0)

An alkaloid that can modify enzymes and may affect FMO3 expression by altering hepatic enzyme regulation.

Hesperidin

520-26-3sc-205711
sc-205711A
25 g
100 g
$82.00
$204.00
5
(1)

A flavonoid glycoside affecting blood lipid levels and metabolism, potentially altering liver enzyme expression, including FMO3.