Date published: 2026-4-27

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Nodal Inhibitors

Nodal inhibitors are a class of small molecules and proteins that play a critical role in the regulation of embryonic development, specifically during the early stages of vertebrate development. These molecules are involved in the modulation of the Nodal signaling pathway, a crucial signaling cascade that governs various developmental processes such as axis formation, germ layer specification, and organogenesis. Nodal inhibitors are essential components of the intricate regulatory network that ensures precise control over these developmental events.

Within the Nodal signaling pathway, Nodal inhibitors act as antagonists, counterbalancing the effects of Nodal ligands. Nodal ligands are secreted proteins that bind to cell surface receptors and initiate intracellular signaling events. This signaling pathway is highly conserved across species and plays a fundamental role in establishing the body plan and ensuring proper tissue differentiation. Nodal inhibitors exert their inhibitory effects by binding to Nodal ligands or their receptors, preventing their interaction and subsequently disrupting downstream signaling. This interference in Nodal signaling is essential for the establishment of embryonic polarity and the formation of distinct tissue layers, ultimately contributing to the formation of various organs and tissues during early development. Overall, Nodal inhibitors represent a critical class of molecules that fine-tune the intricate Nodal signaling pathway, ensuring the precise orchestration of embryonic development.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

SB 431542

301836-41-9sc-204265
sc-204265A
sc-204265B
1 mg
10 mg
25 mg
$82.00
$216.00
$416.00
48
(1)

SB-431542 is a selective inhibitor of ALK4, ALK5, and ALK7, which are receptors that mediate Nodal signaling. By blocking these receptors, SB-431542 can potentially reduce Nodal signaling and its downstream effects.

LY 364947

396129-53-6sc-203122
sc-203122A
5 mg
10 mg
$107.00
$156.00
4
(1)

LY364947 is a potent inhibitor of the TGF-β type I receptor ALK5, which is involved in Nodal signaling. It has been shown to effectively reduce Smad2/3 phosphorylation and inhibit TGF-β-induced gene expression.

A 83-01

909910-43-6sc-203791
sc-203791A
10 mg
50 mg
$202.00
$811.00
16
(1)

A-83-01 is another selective inhibitor of ALK4, ALK5, and ALK7, acting to inhibit Nodal signaling and its associated biological responses.

TGF-β RI Kinase Inhibitor V

627536-09-8sc-203294
2 mg
$88.00
3
(1)

TGF-β RI Kinase Inhibitor V can potentially disrupt Nodal signaling by inhibiting the phosphorylation and activation of Smad2/3 proteins.

LY2157299

700874-72-2sc-391123
sc-391123A
5 mg
10 mg
$213.00
$359.00
3
(1)

LY2157299 is an small molecule inhibitor of the TGF-β receptor I kinase, which plays a role in Nodal signaling. By inhibiting this kinase, Galunisertib can potentially reduce the activity of the Nodal signaling pathway.

ALK5 Inhibitor II

446859-33-2sc-221234
sc-221234A
sc-221234B
sc-221234C
sc-221234D
sc-221234E
sc-221234F
1 mg
5 mg
10 mg
50 mg
100 mg
500 mg
1 g
$77.00
$153.00
$219.00
$663.00
$1248.00
$4382.00
$7850.00
8
(1)

RepSox (ALK5 Inhibitor II) is involved in Nodal signaling. It has been shown to inhibit TGF-β-induced Smad2/3 phosphorylation and gene expression.

EW-7197

1352608-82-2sc-507465
5 mg
$345.00
(0)

EW-7197 is a potent inhibitor of ALK5 kinase activity, which is crucial for Nodal signaling. By inhibiting ALK5, EW-7197 can potentially reduce the activity of the Nodal signaling pathway.

LY2109761

700874-71-1sc-396262
sc-396262A
1 mg
5 mg
$89.00
$275.00
9
(1)

LY2109761 is an administered inhibitor of TGF-β receptor I and II kinases. It has been shown to inhibit TGF-β-induced phosphorylation of Smad2/3 and reduce the expression of TGF-β target genes.

ITD 1

1099644-42-4sc-507349
10 mg
$220.00
(0)

ITD-1 is a selective TGF-β pathway inhibitor that has been shown to selectively promote the differentiation of endodermal cells by inhibiting Nodal signaling.