SS-31, also called Elamipretide, is a mitochondria-targeting tetrapeptide (four amino acids). It is studied in cellular-energy and mitochondrial research and supplied for research use only.
What SS-31 is
SS-31 is a short peptide of four amino acids, a tetrapeptide, designed to concentrate in the mitochondria, the energy centers of the cell. That targeting is the basis of the research interest in it.

How it is studied
In the laboratory, SS-31 is studied in mitochondrial and cellular-energy research, alongside compounds like MOTS-c. As a research peptide, it is a study tool and is not approved or intended for human use.
Browse research-grade peptides
Every Axis compound is third-party tested to 99.4%+ purity, with a certificate of analysis on every batch.
What to look for
A research-grade SS-31 should ship with a batch-specific certificate of analysis confirming purity and identity.
Key takeaways
- SS-31 is also known as Elamipretide.
- It is a mitochondria-targeting tetrapeptide (four amino acids).
- It is studied in mitochondrial and cellular-energy research.
- Research-grade SS-31 is supplied for research use only.
A note on research use
The peptides supplied by Axis Peptide Labs are reference compounds for laboratory and research use only. They are intended for qualified researchers working in academic, institutional, and analytical settings. They are not drugs, foods, cosmetics, or medical products, and they are not intended for human or veterinary consumption. Documented identity and documented purity are what matter most when sourcing a compound, both of which are published on the Axis certificates of analysis page.
