Date published: 2026-2-10

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Trk A Inhibitors

Trk A inhibitors constitute a class of chemical compounds that selectively target and inhibit the activity of the tropomyosin receptor kinase A (Trk A), also known as NTRK1 or neurotrophic tyrosine receptor kinase 1. Trk A is a receptor tyrosine kinase that, upon binding with its ligand, nerve growth factor (NGF), undergoes dimerization and autophosphorylation, initiating a cascade of intracellular signaling pathways. These pathways are critical for various cellular processes such as cell survival, differentiation, and proliferation. Inhibitors of Trk A are designed to bind to the kinase domain of Trk A, effectively preventing its phosphorylation and subsequent signal transduction. The action of these inhibitors is highly specific, as they are tailored to interact with the unique ATP-binding pocket of Trk A, thereby obstructing the kinase's ability to utilize ATP for its autophosphorylation function. The molecular architecture of Trk A inhibitors is diverse, encompassing small molecules with varying scaffolds that can stably occupy the ATP-binding site of the kinase. This structural diversity ensures a high affinity and selectivity for Trk A, alongside optimizing the pharmacokinetic properties to achieve the desired level of inhibition. The design of these inhibitors often involves the incorporation of heterocyclic compounds that can form hydrogen bonds and hydrophobic interactions within the kinase domain, a strategy that enhances their potency and selectivity. Additionally, these molecules can exhibit different binding modes, with some establishing interactions with the active "DFG-in" conformation of the kinase, while others bind to the inactive "DFG-out" conformation.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Gö 6976

136194-77-9sc-221684
500 µg
$227.00
8
(1)

Gö 6976 is a selective inhibitor of TrkA, demonstrating a unique capacity to modulate neurotrophic signaling pathways. Its interaction with the TrkA receptor involves specific binding that disrupts downstream phosphorylation cascades, effectively altering cellular responses. The compound's structural conformation allows for precise engagement with the receptor's active site, influencing the kinetics of signal transduction. This selectivity highlights its role in regulating neuronal growth and differentiation processes.

K-252a

99533-80-9sc-200517
sc-200517B
sc-200517A
100 µg
500 µg
1 mg
$129.00
$214.00
$498.00
19
(2)

K252a inhibits the kinase activity of Trk A, B, and C which can result in reduced Trk A expression and signaling.

Lestaurtinib

111358-88-4sc-218657
sc-218657A
sc-218657B
1 mg
5 mg
10 mg
$275.00
$326.00
$612.00
3
(1)

Lestaurtinib inhibits Trk A kinase activity, potentially leading to the down-regulation of Trk A expression.

TrkA Inhibitor Inhibitor

388626-12-8sc-311553
1 mg
$171.00
2
(0)

TrkA Inhibitor is characterized by its ability to selectively bind to the TrkA receptor, effectively hindering its activation. This compound exhibits unique molecular interactions that prevent the receptor from initiating downstream signaling pathways. By altering the conformational dynamics of the receptor, it influences the kinetics of ligand-receptor interactions, thereby modulating cellular responses. Its distinct binding affinity underscores its role in the intricate network of neurotrophic signaling.

GW-441756

504433-23-2sc-200683
sc-200683A
10 mg
50 mg
$141.00
$565.00
3
(1)

GW441756 is a specific Trk A inhibitor that can suppress its kinase activity, potentially leading to reduced expression and function.

GW441756 hydrochloride

504433-24-3 (free base)sc-215121
5 mg
$140.00
(0)

GW441756 hydrochloride functions as a selective antagonist of the TrkA receptor, exhibiting a unique binding profile that stabilizes the receptor in an inactive conformation. This compound disrupts the typical ligand-induced dimerization, thereby impeding the activation of associated signaling cascades. Its specific interactions with key amino acid residues alter the receptor's structural dynamics, influencing the overall kinetics of neurotrophic factor signaling and cellular communication.

GNF 5837

1033769-28-6sc-490003
5 mg
$81.00
1
(0)

GNF-5837 is a potent Trk A inhibitor, which can suppress its activity and might lead to reduced Trk A expression.

Entrectinib

1108743-60-7sc-507438
5 mg
$180.00
(0)

Entrectinib inhibits Trk A, B, and C, potentially leading to the down-regulation of Trk A expression.