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662005

Sigma-Aldrich

U0126

U0126, CAS 109511-58-2, is a potent and specific inhibitor of MEK1 (IC₅₀ = 72 nM) and MEK2 (IC₅₀ = 58 nM). The inhibition is noncompetitive with respect to both ATP and ERK.

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Synonym(s):
U0126, 1,4-Diamino-2,3-dicyano-1,4- bis(2-aminophenylthio)butadiene, MEK Inhibitor VI, 1,4-Diamino-2,3-dicyano-1,4-bis(2-aminophenylthio)butadiene, MEK Inhibitor VI
Empirical Formula (Hill Notation):
C18H16N6S2 · 0.5C2H6O
CAS Number:
Molecular Weight:
403.52
NACRES:
NA.77

Quality Level

assay

≥98% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

white

solubility

DMSO: 200 mg/mL

shipped in

ambient

storage temp.

−20°C

InChI

1S/C18H16N6S2/c19-9-11(17(23)25-15-7-3-1-5-13(15)21)12(10-20)18(24)26-16-8-4-2-6-14(16)22/h1-8H,21-24H2/b17-11+,18-12+

InChI key

DVEXZJFMOKTQEZ-JYFOCSDGSA-N

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This Item
420119662009662006
U0126 U0126, CAS 109511-58-2, is a potent and specific inhibitor of MEK1 (IC₅₀ = 72 nM) and MEK2 (IC₅₀ = 58 nM). The inhibition is noncompetitive with respect to both ATP and ERK.

662005

U0126

JNK Inhibitor II JNK Inhibitor II. SP600125, CAS 129-56-6, is a potent, cell-permeable, selective, and ATP competitive inhibitor of c-Jun N-terminal kinase (JNK; IC₅₀ = 40 nM for JNK-1 & JNK-2 & 90 nM for JNK-3).

420119

JNK Inhibitor II

Sigma-Aldrich

662009

U0126

U0124 A useful negative control for MEK inhibitors U0125 and U0126.

662006

U0124

assay

≥98% (HPLC)

assay

≥98% (HPLC)

assay

≥98% (HPLC)

assay

≥95% (HPLC)

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−70°C

storage temp.

−20°C

solubility

DMSO: 200 mg/mL

solubility

DMSO: 15 mg/mL

solubility

-

solubility

DMSO: 100 mg/mL

General description

A potent and specific inhibitor of MEK1 (IC50 = 72 nM) and MEK2 (IC50 = 58 nM). The inhibition is noncompetitive with respect to MEK substrates, ATP and ERK. Has very little effect on other kinases, such as Abl, Cdk2, Cdk4, ERK, JNK, MEKK, MKK-3, MKK-4/SEK, MKK-6, PKC, and Raf. Shown to block doxazosin-induced osteoblastic differentiation. U0126 also acts as an immunosuppressant by effectively blocking IL-2 synthesis and T cell proliferation without affecting the long-term outcomes of either T cell activation or tolerance. Noncompetitive with respect to ATP. Also available in InSolution format (Cat. No. 662009.
A potent and specific inhibitor of MEK1 (IC50 = 72 nM) and MEK2 (IC50 = 58 nM). The inhibition is noncompetitive with respect to both ATP and ERK. Has very little effect on other kinases such as Abl, Cdk2, Cdk4, ERK, JNK, MEKK, MKK-3, MKK-4/SEK, MKK-6, PKC, and Raf. Shown to block doxazosin-induced osteoblastic differentiation. Also acts as an immunosuppressant by effectively blocking IL-2 synthesis and T cell proliferation without affecting the long-term outcomes of either T cell activation or tolerance. Noncompetitive with respect to ATP. Also available in InSolution format (Cat. No. 662009).

Biochem/physiol Actions

Cell permeable: no
Primary Target
MEK1 and MEK2
Product does not compete with ATP.
Reversible: no
Target IC50: 72 nM, 58 nm, against MEK1, and MEK2, respectively

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Unstable in solution; reconstitute just prior to use.

Other Notes

Choi, Y.J., et al. 2011. Biochem. Biophys. Res. Commun.416, 232.
DeSilva, D.R., et al. 1998. J. Immunol. 160, 4175.
Duncia, J.V., et al. 1998. Biorg. Med. Chem. Lett.8, 2839.
Favata, M.F., et al. 1998. J. Biol. Chem. 273, 18623.

Legal Information

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


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