1. Neuronal Signaling
  2. Beta-secretase
  3. PF-06751979

PF-06751979 is a potent, brain penetrant, β-site amyloid precursor protein cleaving enzyme 1 (BACE1) inhibitor with an IC50 of 7.3 nM in BACE1 binding assay.

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

PF-06751979 Chemical Structure

PF-06751979 Chemical Structure

CAS No. : 1818339-66-0

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
USD 418 In-stock
Solution
10 mM * 1 mL in DMSO USD 418 In-stock
Solid
5 mg USD 380 In-stock
10 mg USD 580 In-stock
25 mg USD 1160 In-stock
50 mg USD 1850 In-stock
100 mg USD 2550 In-stock
200 mg   Get quote  
500 mg   Get quote  

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This product is a controlled substance and not for sale in your territory.

Customer Review

Based on 1 publication(s) in Google Scholar

Top Publications Citing Use of Products

1 Publications Citing Use of MCE PF-06751979

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  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

PF-06751979 is a potent, brain penetrant, β-site amyloid precursor protein cleaving enzyme 1 (BACE1) inhibitor with an IC50 of 7.3 nM in BACE1 binding assay.

IC50 & Target

IC50: 7.3 nM (BACE1), 194 nM (BACE2)[1]

In Vitro

PF-06751979 shows improved selectivity over BACE2 (IC50=194 nM) in binding (27-fold) relative to the literature examples and across multiple chemical series in BACE1 program. PF-06751979 also inhibits BACE1 and BACE2 in a fluorescent polarization (FP) assay with IC50s of 26.9 nM and 238 nM, respectively. PF-06751979 has excellent potency at BACE1 in binding or FP assay formats along with cellular activity looking at production of sAPPβ in H4 cells with an IC50 of 5 nM[1].

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

In Vivo

PF-06751979 displays excellent brain penetration, potent in vivo efficacy, and broad selectivity over related aspartyl proteases including BACE2. Acute administration of PF-06751979 yields a robust dose-responsive and time-dependent reduction of cerebral spinal fluid (CSF) Aβx-40 with peak inhibition at 3 h of >77%. To determine if the reduction in brain and CSF Aβ is maintained during sustained exposure to PF-06751979, a 5 day subchronic study is executed, dosing once daily by subcutaneous (SC) administration (10 or 50 mg/kg/day). Brain and CSF samples are collected on day 5, following the last dose. PF-06751979 produces a dose-responsive and time-dependent inhibition of Aβ42 in mouse brain. At the 50 mg/kg/day dose, maximal brain lowering is 63% at 7 to 9 h. Administration of PF-06751979 (10 or 50 mg/kg/day for 5 days) produces a dose-responsive and time-dependent inhibition of Aβx-40 in mouse CSF resulting in 77% inhibition of CSF at 3 h post-final 50 mg/kg dose[1].

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

Clinical Trial
Molecular Weight

455.50

Formula

C18H19F2N5O3S2

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

FC(F)OC1=CN=C(C(NC2=CSC([C@]34CO[C@@H](C)C[C@@]3([H])CSC(N)=N4)=N2)=O)C=C1

Shipping

Room temperature in continental US; may vary elsewhere.

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

DMSO : 150 mg/mL (329.31 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Ethanol : 50 mg/mL (109.77 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.1954 mL 10.9769 mL 21.9539 mL
5 mM 0.4391 mL 2.1954 mL 4.3908 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Concentration
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Volume
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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

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C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.75 mg/mL (6.04 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.75 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (27.5 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% Corn Oil

    Solubility: ≥ 2.75 mg/mL (6.04 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.75 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (27.5 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.23%

References
Kinase Assay
[1]

Both BACE1 and BACE2 enzymatic activity is measured with the aid of an optimized synthetic peptide substrate biotin-GLTNIKTEEISEISYEVEFR-C[Oregon green]KK-OH. Upon cleavage of the peptide substrate, a decrease in fluorescence polarization is measured. Compounds are diluted by half log in 100% DMSO 11 times with a top concentration of 10mM in a 384-well polypropylene plate. The 100% DMSO dose response curve is then added to a 384-well black assay plate as 0.150 μL per well. The final working top concentration is 0.1 mM, and the DMSO concentration is 1%. A volume of 7.5 μL of BACE substrate is then added in assay buffer (100 mM sodium acetate, pH to 4.5 with glacial acetic acid, 0.001% Tween 20). The background wells in column 1 of the 384-well assay plate receive 7.5 μL of assay buffer. The reaction is started with the addition of 7.5 μL of BACE1 or BACE2 enzyme in assay buffer to all wells except the background wells in column 1. The final concentration of peptide substrate is 150 nM, and the final concentration of BACE1 and BACE2 enzyme is 0.15 and 2.5 nM, respectively. The assay plate is sealed and incubated at 37°C for 3 or 1 h (BACE1 or BACE2, respectively). After incubation, 15 μL of stop solution (1.5 μM streptavidin in Dulbecco’s PBS) is added to all wells, and the plate is read. Percent effect values for each concentration of compound are calculated based on fluorescence polarization (FP) readings in the 100% effect control wells containing no enzyme and the 0% effect control wells containing no compound. Curve-fitting analysis utilizing concentrations and percent effect values for a given compound is plotted, and the IC50 is determined using a sigmoidal four-parameter fit algorithm[1].

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

Cell Assay
[1]

The neuroglioma cell line H4 cells are grown in Dulbecco’s modified Eagle’s medium (DMEM) with 10% fetal bovine serum (FBS) and 200 mM glutamax. Cells are plated overnight in tissue culture treated Falcon 384-well plates at a cell density of 4500 cells/well in 50 μL of media. The next day, media is removed, and cells are washed once with PBS, after which 25 μL of media is placed in all wells, followed by the addition of the diluted PF-06751979 dose response curve. The highest concentration tested is 30 μM with 1% DMSO. Cells serving as the background controls receive 30 μM of a proprietary compound. Compounds are allowed to incubate with cells overnight in a 37°C incubator. Concurrently, 384-well black Nunc Maxisorp plates are also incubated overnight at 4°C with 10 μL of 4 μg/mL Aβ antibody in coating buffer (0.1 M sodium bicarbonate, pH 8.8 to 9.0)[1].

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

Animal Administration
[1]

Mice[1]
Male 129/sve wild-type mice (20-25 g) are in a nonfasted state prior to subcutaneous dosing with vehicle or PF-06751979 using a dosing volume of 10 mL/kg. The mice are dosed subcutaneously once a day for 5 days with PF-06751979 (10 or 50 mg/kg/day) or vehicle. The mice (n=5 per group) are then sacrificed at 1, 3, 5, 7, 14, 20, and 30 h postdose. Following cardiac puncture into ethylenediaminetetraacetic acid (EDTA)-containing tubes, whole blood samples (0.5-1.0 mL) are collected, and plasma is separated by centrifugation (1500× g for 10 min at 4°C). The generated plasma is distributed into separate tubes on wet ice for exposure measurements (50 μL) and Aβ analysis (remainder). CSF samples (8-12 μL) are obtained by cisterna magna puncture using a sterile 25 gauge needle and collected with a P-20 Eppendorff pipet. CSF samples are distributed into separate tubes on dry ice for exposure measurements (3 μL) and Aβ analysis (remainder). Whole brain is removed and divided for exposure measurements (cerebellum) and Aβ analysis (left and right hemispheres), weighed, and frozen on dry ice. Prior to the assay, all samples are stored at -80°C[1].

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

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
Ethanol / DMSO 1 mM 2.1954 mL 10.9769 mL 21.9539 mL 54.8847 mL
5 mM 0.4391 mL 2.1954 mL 4.3908 mL 10.9769 mL
10 mM 0.2195 mL 1.0977 mL 2.1954 mL 5.4885 mL
15 mM 0.1464 mL 0.7318 mL 1.4636 mL 3.6590 mL
20 mM 0.1098 mL 0.5488 mL 1.0977 mL 2.7442 mL
25 mM 0.0878 mL 0.4391 mL 0.8782 mL 2.1954 mL
30 mM 0.0732 mL 0.3659 mL 0.7318 mL 1.8295 mL
40 mM 0.0549 mL 0.2744 mL 0.5488 mL 1.3721 mL
50 mM 0.0439 mL 0.2195 mL 0.4391 mL 1.0977 mL
60 mM 0.0366 mL 0.1829 mL 0.3659 mL 0.9147 mL
80 mM 0.0274 mL 0.1372 mL 0.2744 mL 0.6861 mL
100 mM 0.0220 mL 0.1098 mL 0.2195 mL 0.5488 mL
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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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PF-06751979
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