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528100

Sigma-Aldrich

PI-103

A cell-permeable pyridinylfuranopyrimidine compound that acts as a potent and ATP-competitive inhibitor of DNA-PK, PI3-K, and mTOR.

Synonym(s):

PI-103, 3-(4-(4-Morpholinyl)pyrido[3ʹ,2ʹ:4,5]furo[3,2-d]pyrimidin-2-yl)phenol, mTOR Inhibitor V, PI 3-K Inhibitor V

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About This Item

Empirical Formula (Hill Notation):
C19H16N4O3
CAS Number:
371935-74-9
Molecular Weight:
348.36
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

100

Assay

≥97% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

white

solubility

DMSO: 5 mg/mL

shipped in

ambient

storage temp.

−20°C

InChI

1S/C19H16N4O3/c24-13-4-1-3-12(11-13)17-21-15-14-5-2-6-20-19(14)26-16(15)18(22-17)23-7-9-25-10-8-23/h1-6,11,24H,7-10H2

InChI key

TUVCWJQQGGETHL-UHFFFAOYSA-N

General description

A cell-permeable pyridinylfuranopyrimidine compound that acts as a potent and ATP-competitive inhibitor of DNA-PK, PI3-K, and mTOR (IC50 = 2, 8, 88, 48, 150, 26, 20, and 83 nM for DNA-PK, p110α, p110β, p110δ, p110γ, PI3-KC2β, mTORC1, and mTORC2, respectively). It inhibits ATR and ATM only at much higher concentrations (IC50 = 850 and 920 nM, respectively) and exhibits little activity towards a panel of more than 40 other kinases even at concentrations as high as 10 µM. Shown to effectively block PI3-K/Akt signaling and cell proliferation in glioma cell lines both in vitro and in vivo. A 10 mM (2 mg/574 µl) solution of PI-103 (Cat. No. 528101) in DMSO is also available.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
DNA-PK, PI3-K, and mTOR
Product competes with ATP.
Reversible: no
Target IC50: 2, 8, 88, 48, 150, 26, 20, and 83 nM for DNA-PK, p110α, p110β, p110delta;, p110γ, PI3-KC2β, mTORC1, and mTORC2, respectively

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Preparation Note

Slight warming may be required for complete solubilization.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Qi-Wen Fan et al.
Cancer cell, 9(5), 341-349 (2006-05-16)
The PI3 kinase family of lipid kinases promotes cell growth and survival by generating the second messenger phosphatidylinositol-3,4,5-trisphosphate. To define targets critical for cancers driven by activation of PI3 kinase, we screened a panel of potent and structurally diverse drug-like
Florence I Raynaud et al.
Cancer research, 67(12), 5840-5850 (2007-06-19)
Extensive evidence implicates activation of the lipid phosphatidylinositide 3-kinase (PI3K) pathway in the genesis and progression of various human cancers. PI3K inhibitors thus have considerable potential as molecular cancer therapeutics. Here, we detail the pharmacologic properties of a prototype of
Zachary A Knight et al.
Cell, 125(4), 733-747 (2006-05-02)
Phosphoinositide 3-kinases (PI3-Ks) are an important emerging class of drug targets, but the unique roles of PI3-K isoforms remain poorly defined. We describe here an approach to pharmacologically interrogate the PI3-K family. A chemically diverse panel of PI3-K inhibitors was
PtdIns(3,4)P2, Lamellipodin, and VASP coordinate actin dynamics during phagocytosis in macrophages.
Monta??o-Rend??n, et al.
The Journal of cell biology, 221 (2023)
Franz F Dressler et al.
Nature communications, 15(1), 4513-4513 (2024-05-28)
Urothelial bladder cancer (UC) has a wide tumor biological spectrum with challenging prognostic stratification and relevant therapy-associated morbidity. Most molecular classifications relate only indirectly to the therapeutically relevant protein level. We improve the pre-analytics of clinical samples for proteome analyses
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