Cat. No.: HY-12948

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AMG319

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AMG319 is a potent and selective PI3Kδ kinase inhibitor with IC₅₀ of 18 nM.

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

Purity: 99.09%
CAS No.: 1608125-21-8
Formula: C₂₁H₁₆FN₇
Molecular Weight:385.40

Storage:

Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year

AMG319 Chemical Structure

CAS No.: 1608125-21-8

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Top Publications Citing

Use of MCE Products

Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Biological Activity
- Description
- IC₅₀ & Target
- Cellular Effect
- In Vitro
- In Vivo
- Clinical Trial
Chemical Information
Publications (1)
Solvent & Solubility
- In Vitro
- In Vivo
Protocol
Purity & Documentation
References
Help & FAQs
Classifications
Bioz

Biological Activity

Description

AMG319 is a potent and selective PI3Kδ kinase inhibitor with IC₅₀ of 18 nM.

IC₅₀ & Target^[1]

PI3Kδ

18 nM (IC₅₀)

PI3Kγ

850 nM (IC₅₀)

PI3Kβ

2.7 μM (IC₅₀)

PI3Kα

33 μM (IC₅₀)

All PI3K Isoforms :

Cellular Effect

Cell Line	Type	Value	Description	References
B cell	IC₅₀	8.6 nM Compound: 3; AMG 319	Inhibition of cell proliferation of human B cells pre-incubated for 30 mins before anti-IgM/CD40L stimulation and measured after 72 hrs by [3H]thymidine incorporation assay Inhibition of cell proliferation of human B cells pre-incubated for 30 mins before anti-IgM/CD40L stimulation and measured after 72 hrs by [3H]thymidine incorporation assay	[PMID: 27411843]
Sf9	IC₅₀	18 nM Compound: 3; AMG 319	Inhibition of polyHis tagged full length recombinant PI3Kdelta (unknown origin) expressed in Sf9 cells co-expressing p85 incubated for 20 mins by alpha screen assay Inhibition of polyHis tagged full length recombinant PI3Kdelta (unknown origin) expressed in Sf9 cells co-expressing p85 incubated for 20 mins by alpha screen assay	[PMID: 27411843]
Sf9	IC₅₀	2700 nM Compound: 3; AMG 319	Inhibition of polyHis tagged full length recombinant PI3Kbeta (unknown origin) expressed in Sf9 cells co-expressing p85 incubated for 20 mins by alpha screen assay Inhibition of polyHis tagged full length recombinant PI3Kbeta (unknown origin) expressed in Sf9 cells co-expressing p85 incubated for 20 mins by alpha screen assay	[PMID: 27411843]
Sf9	IC₅₀	33 μM Compound: 3; AMG 319	Inhibition of polyHis tagged full length recombinant PI3Kalpha (unknown origin) expressed in Sf9 cells co-expressing p85 incubated for 20 mins by alpha screen assay Inhibition of polyHis tagged full length recombinant PI3Kalpha (unknown origin) expressed in Sf9 cells co-expressing p85 incubated for 20 mins by alpha screen assay	[PMID: 27411843]

In Vitro

AMG319 inhibits PI3Kδ, PI3Kγ, PI3Kβ and PI3Kα with IC₅₀s of 18 nM, 850 nM, 2.7 μM and 33 μM, respectively. AMG319, a compound with an IC₅₀ of 16 nM in a human whole blood assay (HWB), excellent selectivity over a large panel of protein kinases, and a high level of in vivo efficacy as measured by two rodent disease models of inflammation. AMG319 has minimal CYP3A4/2D6 inhibition and does not inhibit CYPs (1A2, 2C8, 2C9, 2C19, 2E1, all >20 μM). There is no time dependent inhibition (TDI) against CYPs 3A4, 2D6, 1A2, and 2C9 nor CYP induction (3A4, 2D6, 1A2, 2B6) as measured in hepatocytes. AMG319 is clean in a hERG binding assay (>25 μM), and an Ames micronucleus test proved negative. AMG319 has minimal effects in a BSEP assay up to >200 μM^[1].

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

In Vivo

The study is performed to determine the correlation between biochemical coverage (i.e., pAKT) with functional activity in vivo. AMG319 achieves this coverage at the 3 mg/kg level, which also coveres the human whole blood assay (HWB) (CD-69) IC₉₀ at trough for a full 24 h period. The lower doses 0.1, 0.3, and 1 mg/kg cover trough concentrations between the HWB IC₅₀ and IC₉₀ and evince partial efficacy. Similarly, the plasma concentration of AMG319 covers the IC₉₀ at the 1 mg/kg dose of the mouse anti-IgM pAKT in vitro assay^[1].

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

Clinical Trial

NCT Number	Sponsor	Condition	Start Date	Phase A549
NCT01329991	Plexxikon\|		2011-05	PHASE1

Chemical Information

CAS No. 1608125-21-8
Appearance Solid
Molecular Weight 385.40
Formula C₂₁H₁₆FN₇
Color Light yellow to yellow
SMILES

C[C@H](NC1=C2N=CNC2=NC=N1)C3=CC4=CC=C(F)C=C4N=C3C5=NC=CC=C5
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	2 years
	-20°C	1 year

Publications (1)

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Journal Impact Factor

Phytomedicine

CBX5 loss drives Pl3Kδ inhibitor resistance in mantle cell lymphoma and propolis restores sensitivity by inducing CBX5-mediated ferroptosis. [Abstract]

2025 May 27:143:156911. PMID: 40466505

Solvent & Solubility

In Vitro:

DMSO : 50 mg/mL (129.74 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

2.5947 mL

12.9735 mL

25.9471 mL

5 mM

0.5189 mL

2.5947 mL

5.1894 mL

10 mM

0.2595 mL

1.2974 mL

2.5947 mL

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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Molarity Calculator

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

Mass Mass

Concentration Concentration

Volume Volume

Molecular Weight Molecular Weight

Dilution Calculator

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

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Volume _(start) Volume _(start)

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In Vivo:

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

Stock Solution Working Solution

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: ≥ 2.5 mg/mL (6.49 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.

Protocol 2

Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)

Solubility: ≥ 2.5 mg/mL (6.49 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

Protocol 3

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

Solubility: ≥ 2.5 mg/mL (6.49 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 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 (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage Dosage
mg/kg
Animal Weight (Per Animal) Animal Weight (Per Animal)
g
Dosing Volume (Per Animal) Dosing Volume (Per Animal)
μL
Number of Animals Number of Animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

%
DMSO +

Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
%
+
+
%
Tween-80 + +
%
Saline +

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).

Working solution concentration: 0.22 mg/mL

Protocol

Kinase Assay^[1]

A PI3K Alphascreen assay is used to measure the activity of a panel of four phosphoinositide 3-kinases: PI3Kα, PI3Kβ, PI3Kγ, and PI3Kδ. Enzyme reaction buffer is prepared using sterile water and 50 mM Tris-HCl, pH 7, 14 mM MgCl₂, 2 mM sodium cholate, and 100 mM NaCl. 2 mM DTT is added fresh on the day of the experiment. The Alphascreen buffer is made using sterile water and 10 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.10% Tween 20, and 30 mM EDTA. Then 1 mM DTT is added fresh on the day of the experiment. Compound source plates used for this assay are 384-well Greiner clear polypropylene plates containing test compounds at 5 mM and diluted 1:2 over 22 concentrations. Columns 23 and 24 contained only DMSO, as these wells comprised the positive and negative controls, respectively. Source plates are replicated by transferring 0.5 μL per well into 384-well Optiplates. Each PI3K isoform is diluted in enzyme reaction buffer to 2× working stocks. PI3Kα is diluted to 1.6 nM, PI3Kβ is diluted to 0.8 nM, PI3Kγ is diluted to 15 nM, and PI3Kδ is diluted to 1.6 nM. PI(4,5)P2 is diluted to 10 μM, and ATP is diluted to 20 μM. This 2× stock is used in the assays for PI3Kα and PI3Kβ. For assay of PI3Kγ and PI3Kδ, PI(4,5)P2 is diluted to 10 μM and ATP is diluted to 8 μM to prepare a similar 2× working stock. Alphascreen reaction solutions are made using beads from the anti-GST Alphascreen kit. Two 4× working stocks of the Alphascreen reagents are made in Alphascreen reaction buffer. In one stock, biotinylated-IP₄ is diluted to 40 nM and streptavadin-donor beads are diluted to 80 μg/mL. In the second stock, PIP₃-binding protein is diluted to 40 nM and anti-GST-acceptor beads are diluted to 80 μg/mL. The plates are incubated at room temperature for 30 min. Still in the dark, 10 μL/well of the acceptor bead solution is added to columns 1-24 of the plates. The plates are then incubated in the dark for 1.5 h. The plates are read on an Envision multimode plate reader using a 680 nm excitation filter and a 520-620 nm emission filter^[1].

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

Cell Assay^[1]

B cells are purified from human peripheral blood mononuclear cells (PBMCs) by negative selection. Approximately 3×10⁴ purified B cells per well are seeded into a 96-well plate. Compounds (e.g., AMG319) are dissolved in DMSO at a concentration of 10 mM, and a 10-point, 3-fold serial dilution of the compound is carried out in DMSO. Then 0.5 μL of compound is added to each well in duplicates so that the final DMSO concentration is 0.25% and the highest compound concentration is 10 μM. After preincubating for 30 min, B cells are treated with 2 μg/mL of anti-human IgM antibody plus 300 ng/mL human CD40L or 5 ng/mL human IL-4 plus 200 ng/mL of CD40L as a counterscreen to evaluate the off-target effects. The plates are incubated at 37°C and 5% CO₂ for 72 h, then pulsed with 0.5 μCi per well ³H thymidine for 18 h, and B cells are collected to count the incorporation of ³H thymidine^[1].

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

Animal Administration^[1]

Mice^[1]
IgM membrane only homozygous transgenic mice (6- to 12-week-old female) are orally dosed with AMG319 or vehicle control (n=5 per group). At 15 min after treatment, mice are tail iv injected with 50 μg of Endotoxin-free FITC-labeled μ chain specific anti-IgM or PBS only control. Blood and spleen tissue are collected after 30 min of stimulation for drug concentration and B cell pAKT analysis via flow cytometry. Briefly, blood and dispersed splenocytes are fixed with BD Phosflow lyse/fix buffer, pelleted, and permeabilized with cold 90% MeOH. Cells are then stained with pAKT and Alexa-647 secondary and B220-Pacific Blue for FACS analysis. Stimulated B220+/anti-IgM FITC+ B cells are analyzed for pAKT levels with B220+/FITC-B cells from anti-IgM untreated mice serving as a control. Mice are maintained and experiments are performed.
Rats^[1]
Female Lewis rats (N=8/dose group) are dosed po with AMG319 or vehicle (2% HPMC, 1% Pluronic F68, 10% Captisol, pH 2.0) once a day for 10 days at various doses. Two hours after the first dosing, 200 μL of PBS containing 60 μg of KLH is administered to each rat intravenously. Ten days after the KLH priming, rats are euthanized and blood is taken by cardiac puncture for the measurement of KLH specific IgG and IgM by ELISA.

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

Purity & Documentation

Select Batch:

Purity: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (283 KB)
SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

References

[1]. Cushing TD, et al. Discovery and in vivo evaluation of (S)-N-(1-(7-fluoro-2-(pyridin-2-yl)quinolin-3-yl)ethyl)-9H-purin-6-amine (AMG319) and related PI3Kδ inhibitors for inflammation and autoimmune disease. J Med Chem. 2015 Jan 8;58(1):480-511. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	2.5947 mL	12.9735 mL	25.9471 mL	64.8677 mL
	5 mM	0.5189 mL	2.5947 mL	5.1894 mL	12.9735 mL
	10 mM	0.2595 mL	1.2974 mL	2.5947 mL	6.4868 mL
	15 mM	0.1730 mL	0.8649 mL	1.7298 mL	4.3245 mL
	20 mM	0.1297 mL	0.6487 mL	1.2974 mL	3.2434 mL
	25 mM	0.1038 mL	0.5189 mL	1.0379 mL	2.5947 mL
	30 mM	0.0865 mL	0.4325 mL	0.8649 mL	2.1623 mL
	40 mM	0.0649 mL	0.3243 mL	0.6487 mL	1.6217 mL
	50 mM	0.0519 mL	0.2595 mL	0.5189 mL	1.2974 mL
	60 mM	0.0432 mL	0.2162 mL	0.4325 mL	1.0811 mL
	80 mM	0.0324 mL	0.1622 mL	0.3243 mL	0.8108 mL
	100 mM	0.0259 mL	0.1297 mL	0.2595 mL	0.6487 mL

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AMG319

Kinase Inhibitor Library

PI3K/Akt/mTOR Compound Library

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Anti-Cancer Compound Library

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Anti-Obesity Compound Library

Angiogenesis-Related Compound Library

Glucose Metabolism Compound Library

Targeted Diversity Library

Anti-Liver Cancer Compound Library

Anti-Colorectal Cancer Compound Library

Anti-Prostate Cancer Compound Library

Anti-Pulmonary Fibrosis Compound Library

Cancer Stem Cells Compound Library

Pain-Related Compound Library

Membrane Protein-targeted Compound Library

Highly Selective Inhibitors Library

Anti-Hematopathy Compound Library

Anti-Ovarian Cancer Compound Library

Multi-Target Compound Library

Bioactive Compound Library Max

MCE Bioactive Compound Library

Drug Repurposing Compound Library Plus

Clinical Compound Library Plus

Bioactive Compound Library

Anti-Fibrosis Compound Library

Anti-Brain Cancer Compound Library

Cell Proliferation Compound Library

High-Throughput Bioactive Compound Library

Anti-Rheumatic Arthritis Compound Library

Posttranslational Modification Library

Lactylation Compound Library

Publications Citing Use of MedChemExpress (MCE) AMG319

All PI3K Isoforms

Biological Activity

Chemical Information

Publications (1)

Solvent & Solubility

Protocol

Purity & Documentation

References

Help & FAQs

Complete Stock Solution Preparation Table

AMG319 Related Classifications

Cat. No.: HY-12948