Mitochonic acid 5

Mitochonic acid 5 (CAS No.: 1354707-41-7) is a small-molecule derivative of the plant hormone indole-3-acetic acid that functions as a mitochondria-targeting modulator widely used in studies of mitochondrial biology and cellular stress responses. This compound selectively associates with mitochondria and has been shown to regulate mitochondrial ATP production, thereby supporting mitochondrial homeostasis under conditions of metabolic or oxidative stress. Mechanistically, Mitochonic acid 5 has been reported to influence mitophagy through activation of the MAPK–ERK–YAP signaling axis and modulation of Bnip3-dependent pathways, contributing to the maintenance of mitochondrial integrity and the regulation of apoptosis in cell-based systems, including microglial and fibroblast models. In vitro studies indicate activity across low micromolar concentration ranges, with experimental conditions varying depending on cell type and assay design. In preclinical research settings, it has been employed in models of renal and cardiac cellular injury, as well as in investigations of mitochondrial dysfunction, where it supports cellular viability and bioenergetic function. Mitochonic acid 5 is therefore a valuable tool for probing mitochondrial dynamics, signaling pathways linked to mitophagy, and mechanisms underlying organelle-associated stress responses in both in vitro and in vivo experimental frameworks.