Date published: 2026-2-14

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gp91-phox Inhibitors

Common gp91-phox Inhibitors include, but are not limited to Apocynin CAS 498-02-2, Diphenyleneiodonium chloride CAS 4673-26-1, Ebselen CAS 60940-34-3, Allopurinol CAS 315-30-0 and N-Acetyl-L-cysteine CAS 616-91-1.

gp91-phox, also known as NOX2, is a subunit of the NADPH oxidase complex predominantly found in phagocytes, such as neutrophils and macrophages. This complex plays a critical role in the immune system's defense mechanism against invading pathogens. Upon activation, the NADPH oxidase complex assembles and produces reactive oxygen species (ROS), particularly superoxide anions, which aid in the destruction of pathogens that have been engulfed by phagocytes. In essence, gp91-phox is vital for the respiratory burst activity of phagocytic cells, a rapid release of ROS following phagocytosis. However, while the production of ROS is beneficial for fighting off infections, excessive or unregulated ROS generation can be detrimental, leading to tissue damage and contributing to a variety of inflammatory and autoimmune disorders.

gp91-phox inhibitors are chemical compounds designed to specifically target and inhibit the activity of the gp91-phox subunit, thereby modulating the production of ROS by the NADPH oxidase complex. By controlling the activity of gp91-phox, these inhibitors can reduce the harmful effects of excessive ROS production without compromising the essential immune functions of phagocytes. The intricacies of gp91-phox's function and regulation make it a compelling target for research, and understanding the mode of action and effects of its inhibitors can provide valuable insights into the delicate balance between the immune response and inflammatory damage.

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Items 1 to 10 of 15 total

Display:

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Apocynin

498-02-2sc-203321
sc-203321A
sc-203321B
sc-203321C
1 g
10 g
100 g
500 g
$27.00
$68.00
$116.00
$360.00
74
(2)

Acts by blocking the assembly of NADPH oxidase complex, possibly leading to reduced gp91-phox expression.

CP 31398 dihydrochloride

259199-65-0sc-205270
sc-205270A
10 mg
50 mg
$109.00
$434.00
(0)

Blocks NADPH oxidase activity by disrupting Rac1 binding.

Diphenyleneiodonium chloride

4673-26-1sc-202584E
sc-202584
sc-202584D
sc-202584A
sc-202584B
sc-202584C
10 mg
25 mg
50 mg
100 mg
250 mg
500 mg
$151.00
$136.00
$317.00
$405.00
$944.00
$1837.00
24
(1)

Inhibits the NADPH oxidase activity by targeting the heme groups, potentially affecting gp91-phox expression.

DMH-1

1206711-16-1sc-361171
sc-361171B
sc-361171A
sc-361171C
10 mg
25 mg
50 mg
100 mg
$213.00
$318.00
$632.00
$1047.00
2
(0)

Dual Nox1/4 inhibitor that reduces ROS production.

2-Acetylphenothiazine

6631-94-3sc-223384
sc-223384A
25 g
100 g
$74.00
$222.00
(1)

Specifically targets NOX1, but may have an effect on the broader NADPH oxidase family, including gp91-phox.

2-(2-Chlorophenyl)-4-(3-(dimethylamino)phenyl)-5-methyl-1H-pyrazolo[4,3-c]pyridine-3,6(2H,5H)-dione

sc-501137
25 mg
$380.00
(0)

A NOX1/NOX4 inhibitor that might indirectly influence gp91-phox expression by modulating overall oxidase activity.

Ebselen

60940-34-3sc-200740B
sc-200740
sc-200740A
1 mg
25 mg
100 mg
$33.00
$136.00
$458.00
5
(1)

Acts as a mimic of glutathione peroxidase and could influence gp91-phox expression by modulating ROS levels.

Belinostat

414864-00-9sc-269851
sc-269851A
10 mg
100 mg
$156.00
$572.00
(1)

Belinostat is a novel HDAC inhibitor

Allopurinol

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

Inhibitor of xanthine oxidase, another ROS-producing enzyme. Might indirectly affect gp91-phox through cellular redox balance.

Methyl 3,4-dihydroxybenzoate

2150-43-8sc-269487
5 g
$81.00
(0)

Suppresses ROS production by inhibiting NADPH oxidase.