Date published: 2026-5-5

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Csk Inhibitors

Csk inhibitors represent a specialized class of chemical compounds that specifically target the C-terminal Src kinase (Csk), a non-receptor tyrosine kinase that plays a crucial regulatory role in the Src family of kinases (SFKs). Csk itself functions as a negative regulator of SFKs by phosphorylating a conserved tyrosine residue located in the C-terminal region of SFK members, which in turn promotes an autoinhibitory conformation. This regulatory mechanism is vital for maintaining cellular homeostasis and ensuring that signaling pathways mediated by SFKs are tightly controlled. Disruption or modification of Csk activity, therefore, has the potential to alter the phosphorylation state and activity of various SFKs, leading to significant changes in downstream signaling pathways. The design and synthesis of Csk inhibitors often involve the development of molecules that can bind specifically to the ATP-binding pocket of the Csk enzyme, thereby preventing its catalytic activity. These inhibitors are typically characterized by high specificity and selectivity, often achieved through detailed structure-activity relationship (SAR) studies that guide the optimization of binding affinities and pharmacokinetic properties. The binding interactions between Csk inhibitors and the kinase domain are critical for their efficacy, and these interactions are usually governed by a combination of hydrogen bonding, hydrophobic interactions, and van der Waals forces. Research into Csk inhibitors has provided valuable insights into the structural and functional dynamics of the Csk protein itself, as well as its role in cellular signaling. The study of these inhibitors continues to enhance our understanding of kinase regulation and the intricate network of phosphorylation-dependent processes within cells.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

A 419259 trihydrochloride

1435934-25-0sc-361094
5 mg
$213.00
6
(1)

A 419259 trihydrochloride acts as a potent csk, characterized by its ability to form strong hydrogen bonds with surrounding molecules, enhancing its reactivity. This compound exhibits unique interaction dynamics, facilitating rapid electron transfer processes that influence reaction kinetics. Its distinct solvation properties allow for effective stabilization of transition states, while its ionic nature contributes to enhanced solubility in polar solvents, impacting its behavior in various chemical environments.

PP 2

172889-27-9sc-202769
sc-202769A
1 mg
5 mg
$94.00
$227.00
30
(1)

PP2, a Src family kinase inhibitor, directly targets Src kinases. Csk negatively regulates Src family kinases, and PP2 inhibits their activity, indirectly relieving Csk inhibition. PP2's impact on Src kinases can modulate Csk function, potentially influencing cellular processes dependent on Src kinase activity and Csk regulation.

Lck Inhibitor Inhibitor

213743-31-8sc-204052
1 mg
$362.00
5
(1)

Lck Inhibitor functions as a selective csk, notable for its capacity to engage in specific non-covalent interactions, such as π-π stacking and hydrophobic effects, which modulate its binding affinity. This compound demonstrates unique conformational flexibility, allowing it to adapt to different molecular environments. Its kinetic profile reveals a rapid association and dissociation rate, making it a dynamic participant in biochemical pathways, while its polar character enhances interactions with biomolecular targets.

Src Kinase Inhibitor II

sc-222325
5 mg
$352.00
(0)

Src Kinase Inhibitor II acts as a selective csk, characterized by its ability to disrupt protein-protein interactions through unique hydrogen bonding and electrostatic interactions. This compound exhibits a distinct binding mode that stabilizes specific conformations of target proteins, influencing downstream signaling pathways. Its reaction kinetics are marked by a moderate affinity, allowing for transient interactions that facilitate regulatory mechanisms in cellular processes. The compound's structural features contribute to its specificity and efficacy in modulating kinase activity.

SU6656

330161-87-0sc-203286
sc-203286A
1 mg
5 mg
$57.00
$133.00
27
(1)

SU6656, a Src family kinase inhibitor, directly targets Src kinases. Csk negatively regulates Src family kinases, and SU6656 inhibits their activity, indirectly relieving Csk inhibition. SU6656's impact on Src kinases can modulate Csk function, potentially influencing cellular processes dependent on Src kinase activity and Csk regulation.

Saracatinib

379231-04-6sc-364607
sc-364607A
10 mg
200 mg
$115.00
$1056.00
7
(1)

Sarcatinib, a Src/Abl tyrosine kinase inhibitor, directly targets Src kinases. Csk negatively regulates Src family kinases, and Sarcatinib inhibits their activity, indirectly relieving Csk inhibition. Sarcatinib's impact on Src kinases can modulate Csk function, potentially influencing cellular processes dependent on Src kinase activity and Csk regulation.

PP 1

172889-26-8sc-203212
sc-203212A
1 mg
5 mg
$86.00
$145.00
6
(1)

PP1, a Src family kinase inhibitor, directly targets Src kinases. Csk negatively regulates Src family kinases, and PP1 inhibits their activity, indirectly relieving Csk inhibition. PP1's impact on Src kinases can modulate Csk function, potentially influencing cellular processes dependent on Src kinase activity and Csk regulation.

WH-4-023

837422-57-8sc-507457
10 mg
$172.00
(0)

WH-4-023, a Src family kinase inhibitor, directly targets Src kinases. Csk negatively regulates Src family kinases, and WH-4-023 inhibits their activity, indirectly relieving Csk inhibition. WH-4-023's impact on Src kinases can modulate Csk function, potentially influencing cellular processes dependent on Src kinase activity and Csk regulation.

Dasatinib

302962-49-8sc-358114
sc-358114A
25 mg
1 g
$70.00
$145.00
51
(1)

Dasatinib hydrochloride, a BCR-ABL inhibitor, indirectly affects Csk through Src family kinases. Csk regulates Src kinases, and Dasatinib hydrochloride inhibits their activity, relieving Csk inhibition. Dasatinib hydrochloride's impact on Src kinases can modulate Csk function, potentially influencing cellular processes dependent on Src kinase activity and Csk regulation.