CAS No. 150651-39-1

Batch: Purity:99.90
iFSP1 Chemical Structure
Chemical Structure
Check the iFSP1 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 1-amino-3-(4-methylphenyl)pyrido[1,2-a]benzimidazole-2,4-dicarbonitrile
CAS Number 150651-39-1
Molecular Formula

C20H13N5

Molecular Weight (MW) 323.35
SMILES CC1=CC=C(C=C1)C2=C(C3=NC4=CC=CC=C4N3C(=C2C#N)N)C#N
InChIKey FNESYDFRCQEEKA-UHFFFAOYSA-N

Biological Activity

iFSP1 is a potent, selective, and glutathione-independent inhibitor of ferroptosis suppressor protein 1 (FSP1/AIFM2) with an EC50 of. By blocking FSP1-mediated cell survival mechanisms, iFSP1 inhibits the non-canonical ferroptosis suppressor pathway, leading to lipid peroxidation accumulation and selectively inducing ferroptosis in GPX4-knockout Pfa1 and HT1080 cells overexpressing FSP1. [1]

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 20 mg/mL (61.85 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).
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Reference

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