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435930

Sigma-Aldrich

LIM Kinase Inhibitor I, LIMKi 3

The LIM Kinase Inhibitor I, LIMKi 3 controls the biological activity of LIM Kinase. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

Synonym(s):

LIM Kinase Inhibitor I, LIMKi 3, N-(5-(1-(2,6-Dichlorophenyl)-3-(difluoromethyl)-1H-pyrazol-5-yl)thiazol-2-yl)isobutyramide

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About This Item

Empirical Formula (Hill Notation):
C17H14Cl2F2N4OS
CAS Number:
Molecular Weight:
431.29
MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

Assay

≥95% (HPLC)

form

powder

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

beige

solubility

DMSO: 100 mg/mL

shipped in

ambient

storage temp.

2-8°C

SMILES string

ClC1=CC=CC(Cl)=C1N2N=C(C=C2C3=CN=C(NC(C(C)C)=O)S3)C(F)F

InChI

1S/C17H14Cl2F2N4OS/c1-8(2)16(26)23-17-22-7-13(27-17)12-6-11(15(20)21)24-25(12)14-9(18)4-3-5-10(14)19/h3-8,15H,1-2H3,(H,22,23,26)

InChI key

IVUGBSGLHRJSSP-UHFFFAOYSA-N

General description

A cell-permeable pyrazolylthiazolo-isobutyramide compound that acts as a potent LIM kinase inhibitor (IC50 = 7 and 8 nM against LIMK1 and LIMK2, respectively) and effectively suppresses cellular cofilin phosphorylation (IC50 ~ 1 µM in A549 and MDA-MB-231 cultures) without affecting tubulin polymerization or inducing cytotoxicity (EC50 >10 µM in A549 proliferation and colony formation assays). Shown to effectively destabilize F-actin structure in MDA-MB-231 breast cancer cells (3 to 10 µM) with concomitant blockage of invadopedia-mediated ECM degradation (13% and 10% of control, respectively, by 3 and 10 µM inhibitor) and invasion (45% and 7% of control invasion rate, respectively, by 3 and 10 µM inhibitor). Although reported to exhibit affinity toward AMPKα1 and AMPKα2 in T7 phage-based competition binding studies, inhibitory activity of LIMKi 3 against AMPKα1/2 is not yet directly demonstrated.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
LIMK1 and LIMK2
Reversible: yes
Secondary Target
AMPKA1, AMPKA2, DDR1, PAK3, DCAMKL2
Target IC50: 7 and 8 nM against LIMK1 and LIMK2, respectively

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Other Notes

Scott, R.W., et al. 2010. J. Cell. Biol.191, 169.

Ross-Macdonald, P., et al. 2008. Mol. Cancer Ther.7, 3490.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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