SS-31 is a synthetic mitochondria-targeted tetrapeptide engineered to selectively localize within the inner mitochondrial membrane through electrostatic and aromatic interactions. It has been studied in longevity and mitochondrial research for its relationship to oxidative stress regulation, ATP production efficiency, cardiolipin stabilization, and cellular bioenergetic signaling across a range of experimental models. Its alternating aromatic-cationic structure allows membrane targeting without reliance on traditional peptide transport mechanisms. Lyophilized powder, 3mL vial. Sold at 10mg per vial. For research use only.