CAS No. 371935-74-9

Batch: Purity:99.59
PI-103 Chemical Structure
Chemical Structure
Check the PI-103 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 3-(6-morpholin-4-yl-8-oxa-3,5,10-triazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3,5,10,12-hexaen-4-yl)phenol
CAS Number 371935-74-9
Molecular Formula

C19H16N4O3

Molecular Weight (MW) 348.36
SMILES C1COCCN1C2=NC(=NC3=C2OC4=C3C=CC=N4)C5=CC(=CC=C5)O
InChIKey TUVCWJQQGGETHL-UHFFFAOYSA-N

Ordering Information

Biological Activity

PI-103 is a potent, cell-permeable multi-targeted inhibitor of PI3K and mTOR family kinases. It inhibits the downstream AKT/mTOR signaling pathway, leading to G1 phase cell cycle arrest and suppression of cellular proliferation. In glioblastoma models, PI-103 effectively blocks tumor growth both in vitro and in vivo, demonstrating strong antiproliferative and cytostatic activity. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 24 mg/mL (68.89 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

Aliquotting Service

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Note: Technical data last updated: Sep 1, 2026.