1. PI3K/Akt/mTOR
  2. Akt
  3. Perifosine

Perifosine (Synonyms: KRX-0401; NSC 639966; D21266)

Cat. No.: HY-50909 Purity: >98.0%
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Perifosine is an oral Akt inhibitor which inhibits proliferation of different tumor cell lines with IC50s of 0.6-8.9 μM.

For research use only. We do not sell to patients.

Perifosine Chemical Structure

Perifosine Chemical Structure

CAS No. : 157716-52-4

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Based on 3 publication(s) in Google Scholar

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Perifosine is an oral Akt inhibitor which inhibits proliferation of different tumor cell lines with IC50s of 0.6-8.9 μM.

IC50 & Target





In Vitro

The IC50 for growth of Ntv-a/LacZ cell lines is determined by MTT assay. When the cells are cultured for 48 hours in 10% FCS-supplemented media, the IC50 for cells with constitutively active PDGF, Ras, or Akt signaling is similar and found to be ~45 μM[1].Perifosine, a oral-bioavailable alkylphospholipid (ALK), on the cell cycle kinetics of immortalized keratinocytes (HaCaT) as well as head and neck squamous carcinoma cells. Proliferation is assessed by the incorporation of [3H]thymidine into cellular DNA. Exposure to Perifosine (0.1-30 μM) for 24 h results in a dose-dependent inhibition of [3H]thymidine uptake in all cell lines tested. The IC50s for growth are between 0.6 and 8.9 μM, reaching IC80s of ~10 μM. Perifosine blocks cell cycle progression of head and neck squamous carcinoma cells at G1-S and G2-M by inducing p21WAF1, irrespective of p53 function, and may be exploited clinically because the majority of human malignancies harbor p53 mutations. Perifosine (20 μM) induces both G1-S and G2-M cell cycle arrest, together with p21WAF1 expression in both p53 wild-type and p53-/- clones[2].

In Vivo

Mice are identified with tumors by bioluminescence imaging and either treated them with 100 mg/kg Temozolomide, or 30 mg/kg Perifosine, or a combination with 100 mg/kg Temozolomide and 30 mg/kg Perifosine (Temozolomide+Perifosine) for 3 to 5 days. The mice are sacrificed and tumors analyzed histologically for cell proliferation by Ki-67 immunostaining. Ki-67 staining index is significantly reduced in mice treated with either Temozolomide (Ki-67 staining index=5.5±1.2%, n=4, P=0.0019) or Perifosine (Ki-67 staining index=3.2±1.1%, n=3, P=0.001) compared with Control, demonstrating the inhibitory effect on proliferation. Most importantly, the tumors treated with Temozolomide+Perifosine have the lowest Ki-67 staining index (1.7±1.2%, n=3, P=0.0005). The additional treatment with Perifosine results in a significantly lower proliferation rate than Temozolomide alone (P=0.0087)[1]. Perifosine markedly decreases p-Akt from 10 min to 24 hours and subsequently, moderately decreased p-S6 from 1h to 24 h after injection[3].

Clinical Trial
Molecular Weight









Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : ≥ 153.33 mg/mL (332.13 mM)

DMSO : < 1 mg/mL (insoluble or slightly soluble)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.1661 mL 10.8305 mL 21.6610 mL
5 mM 0.4332 mL 2.1661 mL 4.3322 mL
10 mM 0.2166 mL 1.0830 mL 2.1661 mL
*Please refer to the solubility information to select the appropriate solvent.
Kinase Assay

Exponentially growing cells (HN12, HN30, and HaCaT) are lysed, and 500 μg of total cellular protein are used to immunoprecipitate active cdc2 and cdk2 complexes. After capturing with gammabind G Sepharose and subsequent washes, the active immune complexes are assessed for activity in the presence of increasing concentrations of Perifosine (0.1-30 μM) or flavopiridol (300 nM) in the kinase assay buffer containing [γ-32P]ATP (3000 Ci/mmol) and 0.2 mg/mL histone H1, 25 μM ATP. Reactions are incubated at 37°C for 30 min and terminated by the addition of SDS-gel loading buffer, resolved in SDS-PAGE, and dried gels are subjected to autoradiography and phosphorimaging[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Assay

Cell proliferation studies by measuring the uptake of [3H]thymidine is performed. Briefly, HNSCC and HaCaT cells (1-2×104/well) are grown overnight in 24-well plates and exposed to either Perifosine (0.1-30 μM) or PBS (control). After treatment (24-48 h), cells are pulsed with [3H]thymidine (1 μCi/well) for 4-6 h, fixed (5% trichloroacetic acid), and solubilized (0.5 M NaOH) before scintillation counting. Experiments are performed in triplicates[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration

Drug treatment of tumor-bearing mice. Image-positive Ef-luc Ntv-a mice are treated daily with i.p. administration of buffer alone as a control, or i.p. administration of 100 mg/kg Temozolomide, or oral administration of 30 mg/kg Perifosine, or a combination with Perifosine and Temozolomide for 3 to 5 days. The mean doses of the treatments are: Control, 5 (all five); Temozolomide, 3.75 (three to five); Perifosine, 3.75 (three to four); and Perifosine+Temozolomide, 3 (all three). Control buffer solution consisted of 5% DMSO and 1% Tween 80 in distilled water.
To further determine whether the paradoxical effect of rapamycin on S6 phosphorylation is related to upstream signals of Akt-mTOR, rats are treated with Perifosine (20 mg/kg, ip, once), an Akt inhibitor, 30 min before rapamycin administration. Rats are sacrificed 1 h or 6 h after rapamycin injection.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


Purity: >98.0%

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PerifosineKRX-0401NSC 639966D21266KRX0401KRX 0401NSC639966NSC-639966D 21266D-21266AktApoptosisAutophagyPKBProtein kinase BInhibitorinhibitorinhibit

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