13-Amino-11-(4-methylphenyl)-1,8-diazatricyclo[7.4.0.0,2,7]trideca-2,4,6,8,10,12-hexaene-10,12-dicarbonitrile

IFSP1 is a member of the class of pyridobenzimidazoles that is pyrido[1,2-a]benzimidazole substituted by amino, cyano, 4-methylphenyl, and cyano groups at positions 1, 2, 3 and 4, respectively. It is a potent inhibitor of ferroptosis suppressor protein 1 (FSP1) with EC50 of 103 nM. It induces ferroptosis in GPX4 knockout cells that overexpress FSP1. It has a role as a ferroptosis inducer, a ferroptosis suppressor protein 1 inhibitor and an antineoplastic agent. It is a pyridobenzimidazole, a nitrile, a member of toluenes, an aromatic amine and a primary amino compound.