Catalog No.S7271

FRAX597 Chemical Structure

Molecular Weight(MW): 558.10

FRAX597 is a potent, ATP-competitive inhibitor of group I PAKs with IC50 of 8 nM, 13 nM, and 19 nM for PAK1, PAK2, and PAK3, respectively.

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Cited by 6 Publications

3 Customer Reviews

  • (e) FRAX597 (1 μM) for 1 h, and seeded onto Matrigel. 2F-2B cells were supplemented with exosomes (30 μg). After 24 h culture, tube formation was analysed and imaged. Scale bar = 50 μm. (representative images from n=3, *p<0.05, **p<0.01 and NS = no significant difference).

    Oncotarget, 2016, 7(15):19709-22. FRAX597 purchased from Selleck.

    Induction of caspase-3 with FRAX597 (2 µM) is enhanced by co-treatment with KJ-Pyr-9 (12.5 µM), as shown by Immunoblotting. All treatments were performed for 30 h.

    Am J Cancer Res, 2017, 7(8):1724-1737. FRAX597 purchased from Selleck.

  • (A) Cells were cultured on glass coverslips and pretreated with IPA3 (5 μM) or FRAX597 (50 nM) for 30 min and subsequently exposed to 1 mM sevoflurane or isoflurane for 30 min. The redistribution of filamentous actin and globular actin was determined by phalloidin–Alexa568 and DNAse I-Alexa488 staining and immunofluorescence microscopy. Magnification, 400 × (the scale bar represents 50 μm). Similar results were obtained in three independent experiments.

    PLoS One, 2016, 11(9):e0162214. FRAX597 purchased from Selleck.

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Choose Selective PAK Inhibitors

Biological Activity

Description FRAX597 is a potent, ATP-competitive inhibitor of group I PAKs with IC50 of 8 nM, 13 nM, and 19 nM for PAK1, PAK2, and PAK3, respectively.
PAK1 [1]
(Cell-free assay)
PAK2 [1]
(Cell-free assay)
PAK2 [1]
(Cell-free assay)
PAK3 [1]
(Cell-free assay)
8 nM 13 nM 13 nM 19 nM
In vitro

FRAX597 (100 n M) displays a significant inhibitory capacity toward YES1 (87%), RET (82%), CSF1R (91%), TEK (87%), PAK1 (82%), and PAK2 (93%), while displays minimal inhibitory activity towards the group II PAKs: PAK4 (0%), PAK6 (23%), and PAK7 (8%). FRAX597 treatment dramatically impairs the proliferation of Nf2-null SC4 Schwann cells (SC4 cells). FRAX597 displays an IC50 value of 48 nM against wild type PAK1, while IC 50 values against the V342F and V342Y PAK1 mutants are higher than 3μM and 2 μM, respectively.[1] FRAX597 inhibits the proliferation and motility of both benign (Ben-Men1, 3μM) and malignant (KT21-MG1, 0.4 μM) meningiomas cells after treating of 72 h.[2]

In vivo In NOD/SCID mice which bearing Nf2-/-SC4 Schwann cells, FRAX597 (100 mg/kg/day, p.o.) causes more significant tumor growth inhibition cpmpared with control mice.[1] In SCID mice with orthotopic meningioma, FRAX597 (90 mg/kg/day, p.o.) significantly suppresses tumor growth.[2] In KrasG12D mice, treatment with FRAX597 (90 mg/kg/day, p.o.) causes tumor regression and loss of Erk and Akt activity.[3]


Kinase Assay:[1]
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Determination of Enzyme IC50 Values:

IC50 values are determined using a 10 concentration point, non-radioactive, functional assay that employs a fluorescence-based, coupled-enzyme format, according to the manufacturer’s protocol (Z’-LYTE@biochemical assay). Kinase selectivity is determined using both the Z’-LYTE@ and Adapta@ kinase assay format.
Cell Research:[1]
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  • Cell lines: SC4 cells
  • Concentrations: 1 μM
  • Incubation Time: 4 day
  • Method: 30,000 cells/well are plated in 12-well dishes in triplicate. Cell growth media with or without FRAX597 is replaced daily. At indicated time points, cells from individual wells are trypsinized and counted using a Coulter counter.
    (Only for Reference)
Animal Research:[2]
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  • Animal Models: SCID mice with orthotopic meningioma model
  • Formulation: 10% (PEG400:Tween-80:PVP-K30, 90:5:5), 15% Vitamin E-TPGS, 75% of hydroxypropylcellulose (0.5%) in 50 mM citrate buffer (pH 3.0)
  • Dosages: 90 mg/kg/day
  • Administration: p.o.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 14 mg/mL warmed (25.08 mM)
Ethanol 1 mg/mL (1.79 mM)
Water Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 558.10


CAS No. 1286739-19-2
Storage powder
in solvent
Synonyms N/A

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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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PAK Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID