Inosine monophosphate or inosinic acid is the ribonucleotide of hypoxanthine and the first nucleotide formed during purine synthesis.

1,3-Diphenylisobenzofuran is a fluorescent probe. It possesses a highly specific reactivity towards singlet oxygen forming an endoperoxide which decomposes to give 1,2-dibenzoylbenzene. 1,3-Diphenylisobenzofuran can detect the generation of reactive oxygen species (ROS).

PKUMDL-LC-101-D04 is a potent allosteric activator of glutathione peroxidase 4 (GPX4), a regulator of ferroptosis.