Date published: 2026-5-28

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MEK-5 Inhibitors

The chemical class known as MEK-5 inhibitors consists of compounds that influence the activity of MEK-5 indirectly by affecting related signaling pathways or cellular processes. These chemicals do not inhibit MEK-5 directly but modulate its activity through alterations in the MAPK/ERK pathway, primarily by targeting MEK1/2 or downstream effectors such as ERK1/2. The primary method by which these chemicals can influence MEK-5 involves the modulation of MEK1/2 activity. Compounds such as PD0325901, U0126, Trametinib, Cobimetinib, Selumetinib, Binimetinib, CI-1040, AZD6244, PD98059, SL327, Refametinib, and SCH772984 inhibit MEK1/2 or ERK1/2, key components of the MAPK/ERK pathway. By targeting these kinases, they can indirectly affect MEK-5, particularly in cellular contexts where MEK isoforms interact or have overlapping functions. For example, inhibiting MEK1/2 might lead to compensatory mechanisms or feedback loops within the pathway that could influence MEK-5 activity. Furthermore, the indirect effects of these inhibitors on MEK-5 might arise from the interconnected nature of the MAPK/ERK pathway. The pathway involves a cascade of phosphorylation events, and inhibition of one component can lead to alterations in the activity of other components, including MEK-5. For instance, inhibiting ERK1/2 with SCH772984 might lead to feedback regulation that indirectly modulates MEK-5 activity. In summary, MEK-5 inhibitors, as classified here, are compounds that impact the activity of MEK-5 through indirect mechanisms by modulating the MAPK/ERK signaling pathway. Their influence on MEK-5 is rooted in their ability to alter the activity of closely related kinases or downstream effectors, thereby affecting the functional context in which MEK-5 operates within the cell. These inhibitors showcase the complex interplay between signaling pathways and the functional modulation of key enzymes involved in cell signaling and regulation.

Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

BIX 02189

1094614-85-3sc-364436
sc-364436A
5 mg
10 mg
$224.00
$386.00
5
(1)

BIX 02189 acts as a selective MEK-5 inhibitor, distinguished by its capacity to engage in hydrogen bonding and hydrophobic interactions with the target enzyme. This compound demonstrates a unique competitive inhibition mechanism, effectively altering substrate binding dynamics. Kinetic studies indicate a rapid association rate, contributing to its efficacy in modulating downstream signaling pathways. Its polar functional groups enhance solubility, promoting bioavailability in various environments.

U-0126

109511-58-2sc-222395
sc-222395A
1 mg
5 mg
$64.00
$246.00
136
(2)

U0126 is another well-known inhibitor of MEK1/2. Similar to PD0325901, it can have off-target effects on other MEK proteins, potentially including MEK-5, due to the similarity in their kinase domains.

Trametinib

871700-17-3sc-364639
sc-364639A
sc-364639B
5 mg
10 mg
1 g
$114.00
$166.00
$947.00
19
(1)

Trametinib is a selective inhibitor of MEK1/2. Its inhibitory effects on these kinases can indirectly influence MEK-5 activity, particularly in cellular contexts where multiple MEK isoforms interact or have compensatory roles.

Cobimetinib

934660-93-2sc-507421
5 mg
$270.00
(0)

Cobimetinib targets MEK1/2, and by modulating the activity of these closely related kinases, it might indirectly affect MEK-5, especially in signaling pathways where there is functional redundancy or interaction between different MEK isoforms.

Selumetinib

606143-52-6sc-364613
sc-364613A
sc-364613B
sc-364613C
sc-364613D
5 mg
10 mg
100 mg
500 mg
1 g
$29.00
$82.00
$420.00
$1897.00
$3021.00
5
(1)

Selumetinib is a selective inhibitor of MEK1/2. While its primary targets are MEK1 and MEK2, the drug could potentially exert indirect effects on MEK-5 activity due to the interconnected nature of the MAPK/ERK pathway.

MEK 162

606143-89-9sc-488879
10 mg
$306.00
(0)

Binimetinib, another MEK1/2 inhibitor, can indirectly influence MEK-5 by altering signaling dynamics within the MAPK/ERK pathway, where MEK-5 also participates.

PD 184,352

212631-79-3sc-202759
sc-202759A
1 mg
5 mg
$40.00
$260.00
34
(1)

PD 184,352 is a potent and selective inhibitor of MEK1/2, and it might indirectly affect MEK-5 activity through its broad action on the MEK enzymes in the MAPK/ERK pathway.

PD 98059

167869-21-8sc-3532
sc-3532A
1 mg
5 mg
$40.00
$92.00
212
(2)

PD98059 is one of the first MEK inhibitors discovered and, while it is specific to MEK1/2, its use can potentially lead to indirect effects on MEK-5 activity, particularly in signaling cascades where MEK isoforms have overlapping or compensatory roles.

SL-327

305350-87-2sc-200685
sc-200685A
1 mg
10 mg
$107.00
$332.00
7
(0)

SL327 is known to inhibit MEK1/2 and could potentially have off-target effects on MEK-5, especially in complex signaling networks where MEK isoforms might compensate for each other's activity.

BAY 869766

923032-37-5sc-364427
sc-364427A
5 mg
10 mg
$245.00
$428.00
1
(1)

BAY 869766 is a selective inhibitor of MEK1/2 and could indirectly affect MEK-5 activity through its action on these related kinases.