Free 2-day shipping on all U.S. orders

SS-31

$60.00

Research Use Only · Not for Human Consumption

Synthetic tetrapeptide for laboratory research

Free 2-day shipping
Free shipment protectionLost, stolen, or damaged? We replace it at no cost. Details
Apple PayGoogle PayVisaDiscoverAmerican Express

SS-31 (elamipretide), a synthetic tetrapeptide supplied as 10mg lyophilized powder for laboratory research. Batch-specific independent analysis is available.

SKU: PF-SS-31

Chemistry

CAS#FormulaMolar Mass
CAS Number: 736992-21-5Molecular Formula: C32H49N9O5Molar Mass: 639.8 g/mol

What is SS-31?

SS-31 (elamipretide), supplied as 10mg lyophilized powder. For research use only; not for human consumption.

SS-31, also known as elamipretide or MTP-131, is a synthetic four-residue peptide in the Szeto-Schiller peptide family. Its sequence is D-Arg–2′,6′-dimethylTyr–Lys–Phe–NH₂, with an amidated C-terminus and a D-arginine residue.

Published laboratory studies characterize SS-31 in cardiolipin-containing membranes and mitochondrial preparations. The cited primary study examines its interaction with cardiolipin and the cytochrome c/cardiolipin complex. These references describe research on the compound and do not establish a result for every experimental system or for this supplied lot.

This product is supplied as white lyophilized powder with a labeled content of 10mg per vial. The current batch certificate reports identity by LC-MS, purity by HPLC-UV, and measured net peptide content, together with elemental impurity, endotoxin, and microbial testing. Results apply to the sample tested; measured net content is distinct from the labeled vial strength.

The molecular formula, CAS number, and molar mass shown identify the parent SS-31 peptide using PubChem CID 11764719. They do not establish the counterion or salt composition of the supplied material, which is not specified on the certificate. This product is intended for laboratory research only and is not for human or veterinary use.

How should SS-31 be stored?

SS-31 is supplied as a lyophilized powder. Follow the storage conditions on the vial label and any lot-specific instructions supplied with your order. Contact support if these instructions are missing.

The certificate of analysis for lot FO676 does not report a stability study, storage temperature, or validated shelf life after preparation. No fixed shipping-stability period or prepared-sample shelf life is established by this certificate.

Certificate of Analysis

The submitted sample from lot FO676 was tested by Freedom Diagnostics for identity, purity, net content, elemental impurities, microbial DNA, and endotoxin. Results apply to the sample tested. The original certificate is available below.

SS-31 · 10mg

Lot FO676LyophilizedReceived 09/04/2026Reported 09/06/2026
PASSHPLC-UV / LC-MS
99.86%Purity

Peptide Purity · HPLC-UV

99.86% measured purity

Purity measured by HPLC-UV. Identity confirmed by LC-MS. See the laboratory certificate for analytical results and methods.

Every test on this certificate

Identity (LC-MS)Pass
Confirmed
Heavy Metals · ICP-MSPass
All Pass
Microbial Analysis · PCRPass
No Detectable Microbial DNA
Endotoxin · USP <85>PASS
Pass
Net Peptide ContentReported
11.30 mg

Verify authenticity · Access code

Pept2609040431

Verify at Freedom Diagnostics →
Download PDF

COA documents are updated with each new batch. Contact support for batch-specific documentation.

Further reading

References

  1. Birk AV, Chao WM, Bracken C, Warren JD, Szeto HH. Targeting mitochondrial cardiolipin and the cytochrome c/cardiolipin complex to promote electron transport and optimize mitochondrial ATP synthesis. British Journal of Pharmacology. 2014;171:2017–2028. PubMed: 24134698