What is SS-31?
SS-31, international name elamipretide, is a synthetic four-amino-acid peptide from the “Szeto-Schiller” family, developed by Hazel Szeto and Peter Schiller. It alternates positively charged and aromatic residues, which lets it pass into cells and concentrate in the inner membrane of mitochondria, where it binds the phospholipid cardiolipin.
SS-31 product specifications
- Compound: SS-31 (elamipretide)
- Sequence: D-Arg-Dmt-Lys-Phe-NH2 (4 residues; Dmt = 2′,6′-dimethyltyrosine)
- Molecular formula: C32H49N9O5
- Molecular weight: about 639.8 g/mol
- Vial sizes: 10mg and 50mg
Available sizes: 10mg and 50mg
Both sizes contain the same compound. The figure is the total amount of peptide in the vial, supplied as a dry powder; it is not a concentration. The 50mg vial simply holds five times as much material. Tell us which size you need when you contact us on Telegram or by email.
How SS-31 differs from other mitochondrial peptides
- MOTS-c and Humanin are natural peptides encoded in mitochondrial DNA. SS-31 is a designed synthetic peptide.
- NAD+ is a coenzyme, not a peptide.
Regulatory status
Elamipretide received accelerated approval from the US FDA in September 2025 as a prescription medicine (Forzinity, Stealth BioTherapeutics) for a rare mitochondrial disease. This product is research material, not that medicine, and is sold for laboratory research use only.
Handling and research-use notice
Store and handle this material as stated on the label and certificate of analysis for your batch; see our guide to storing research peptides. This product is sold for laboratory research use only. It is not a medicine or supplement and is not for human or veterinary use.
