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SML1731

Sigma-Aldrich

A64 trifluoroacetate

≥98% (HPLC)

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Synonym(s):
5-((6-Oxo-5-(6-(piperazin-1-yl)pyridin-3-yl)-1,6-dihydropyridin-3-yl)methylene)thiazolidine-2,4-dione trifluoroacetate
Empirical Formula (Hill Notation):
C18H17N5O3S · xC2HF3O2
Molecular Weight:
383.42 (free base basis)
PubChem Substance ID:
329826044

Quality Level

100

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

H2O: 10 mg/mL, clear

storage temp.

2-8°C

SMILES string

O=C1NC=C(/C=C2SC(NC\2=O)=O)C=C1C3=CC=C(N4CCNCC4)N=C3.FC(F)(C(O)=O)F

Biochem/physiol Actions

A64 is a cell-permeable, ATP site-targeting pyridone thiazolidinedione compound that acts as a potent HIPK2-selective homeodomain-interacting protein kinase inhibitor (IC50 = 74 nM and 136 nM against HIPK2 and HIPK1, respectively; [ATP] = 100 μM), affecting MPF only at higher concentrations (by 35% at 5 μM; [ATP] = 10 μM) and exhibiting little potency toward CDK1 (IC50 >10 μM). A64 (1 μM) effectively prevents ER stresser tunicamycin (1 μg/mL) -induced HIPK2/JNK phosphorylation and cell death in HEK293 and primary rat motor neuron cultures. HIPK2 inhibition by A64 treatment is also efficacious in protecting rat motor neurons from death upon exogenous SOD1 G93A or TDP-43 expression. ff-target kinases revealed by kinome profiling include DYRK1A, CSNK2A2, DAPK2, DAPK1, PIM3, CSNK2A1, PIM1 (Kd = 8.8, 6.1, 6.1, 9.5, 3.7, 31, 37 nM, respectively) and DYRK1B (IC50 = 62 nM).

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319 - H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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