SS-31
SS-31 is a synthetic tetrapeptide — a chain of four amino acids with the sequence D-Arg-Dmt-Lys-Phe-NH2, where Dmt is 2′,6′-dimethyltyrosine, a modified form of tyrosine. Its molecular formula is C32H49N9O5, its molecular weight is approximately 639.8 g/mol, and its CAS number is 736992-21-5. The peptide belongs to a class of mitochondria-targeted tetrapeptides whose structure follows an alternating aromatic-cationic motif (positive charge, aromatic ring, positive charge, aromatic ring), which gives it membrane-permeable characteristics. SS-31 has a structural affinity for cardiolipin, a phospholipid found almost exclusively in the inner mitochondrial membrane. Supplied as a white to off-white lyophilized powder, it is soluble in water. This product is for research purposes only.
Proudly Made in the UK
UK-manufactured · UK Tested
Certificate of Analysis
Independent laboratory testing confirms purity and composition of this research peptide.
+ ENDO PASSEDOverview
SS-31 is a synthetic tetrapeptide — a chain of four amino acids with the sequence D-Arg-Dmt-Lys-Phe-NH2. “Dmt” stands for 2′,6′-dimethyltyrosine, a modified version of the natural amino acid tyrosine. The molecular formula is C32H49N9O5, and it has a molecular weight of approximately 639.8 g/mol. Its CAS registry number is 736992-21-5. The peptide carries a net positive charge at physiological pH due to the arginine and lysine residues.
SS-31 belongs to a class of mitochondria-targeted tetrapeptides designed with mitochondrial membrane-compatible structural features. The peptide’s small size and alternating aromatic-cationic motif (positive charge, aromatic ring, positive charge, aromatic ring) give it membrane-permeable characteristics. It has a structural affinity for cardiolipin, a phospholipid found almost exclusively in the inner mitochondrial membrane. SS-31 is supplied as a white to off-white lyophilized powder that is soluble in water.
This product is strictly for research purposes only. Not approved for human or animal use.
PubChem Reference: View compound profile on NIH PubChem
Key Characteristics
MOLECULAR PROFILE
Formula: C₃₂H₄₉N₉O₅
Weight: 639.8 g/mol
CAS: 736992-21-5
Sequence: D-Arg-Dmt-Lys-Phe-NH₂
PHYSICAL PROPERTIES
Form: White to off-white lyophilized powder
Solubility: Water-soluble
Storage: Keep refrigerated 36‑46 °F (2‑8 °C)
Stability: Stable when properly stored
Size: 10mg, 50mg
SKU: AXIOM-SS-31
Categories: Single Peptides
Tags: Research Chemical
This product is strictly for research purposes only. Not for human or animal consumption.
