Peanut procyanidin A is a type of A-type procyanidin that can be extracted from peanut skins. Peanut procyanidin A can protect prostate DU145 cells from H2O2-induced oxidative stress damage through the MAPKs signaling pathway, alleviate cell cycle arrest, and reduce cell apoptosis. Peanut procyanidin A can also regulate gut microbiota and metabolism in mice with DSS -induced ulcerative colitis.

A novel inhibitor of neuroinflammation, suppresses the proinflammatory cytokine production in LPS-stimulated N9 microglial cells (IC50=3.4 nM).

2-Picolinic acid methyl ester is used as pharmaceutical intermediate.