SS-31 Peptide Vials
Mitochondria-targeted synthetic tetrapeptide · 10mg–50mg · boxes of 10 vials
Free delivery worldwide on orders over $1,000 (about £749)
Strength 2 options · price per box
Latest third-party test: 99.67%Purity (HPLC) · 10 mg · tested 9 Jul 2026
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- No minimumBoxes of 10 vials
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Often ordered together
One box of each. Change strengths or quantities in the cart.
About SS-31
What is SS-31?
Overview
What is SS-31?
SS-31 is a synthetic tetrapeptide designed to concentrate in the inner mitochondrial membrane, where it associates with cardiolipin. Its alternating aromatic-cationic structure is what drives that targeting. It is supplied as a lyophilised powder in sealed vials, boxed in tens, for laboratory research use only.
SS-31 at a glance
| Compound | SS-31 |
|---|---|
| Also known as | Elamipretide, MTP-131, SS31, Bendavia |
| Classification | Mitochondria-targeted synthetic tetrapeptide |
| CAS number | 736992-21-5 |
| Molecular formula | C32H49N9O5 |
| Molecular weight | 639.79 g/mol |
| Sequence | D-Arg-Dmt-Lys-Phe-NH2 |
| PubChem CID | 11764719 |
| Purity | 99%+ by HPLC |
| Physical form | Lyophilised powder |
| Available strengths | 10 mg, 50 mg |
| Box quantity | 10 vials |
| Price from | $10.66 per vial ($106.64 per box) |
| Research status | Investigational, known clinically as elamipretide. Has been through multiple registered clinical trials for mitochondrial disease. Not approved. |
| Documentation | Batch-specific third-party COA |
These are catalogue target specifications, not batch results. The 99%+ purity figure is the specification we buy to. The authoritative figures for any particular box are the ones printed on that box’s Certificate of Analysis, which is lot-specific. What research grade actually means explains the difference. Terms such as HPLC purity and net peptide content are explained in the peptide glossary.
We make no “third-party verified” claim for a batch unless the matching report is supplied with it. Ask for the current COA for the lot in stock before you order — we will send it.
Prices for every strength
Pricing
SS-31 price per vial: 10mg and 50mg
SS-31 starts at $10.66 per vial (£7.99), sold in boxes of 10 at $106.64. One box is the smallest order and there is no trade account or minimum spend. Larger volumes are negotiable.
| Strength | Per vial | Box of 10 |
|---|---|---|
| 10 mg | $10.66 £7.99 | $106.64 £79.89 |
| 50 mg | $25.43 £19.05 | $254.28 £190.51 |
Storage & reconstitution
Handling
How should SS-31 be stored and reconstituted?
Sealed vials tolerate ambient temperature in transit and keep at −20 °C beyond that. Reconstitute slowly down the vial wall, swirl rather than shake, then refrigerate at 2–8 °C and aliquot before freezing.
Why each of those matters, and what a freeze–thaw cycle actually costs: peptide handling and storage reference. How long a mixed vial keeps: reconstituted peptide shelf life.
What it is researched for
Research Context
What is SS-31 researched for?
Below is a plain-English summary of what published research has investigated, and what it has found. These are descriptions of research activity and published results. They are not claims about what SS-31 does, and nothing here is a statement that it is safe or effective for any purpose.
Cardiolipin binding
SS-31 concentrates in the inner mitochondrial membrane and binds cardiolipin, a lipid found almost nowhere else. Cardiolipin organises the proteins of the respiratory chain, and when it is damaged, energy production drops. 1
Mitochondrial function research
Studies examine whether stabilising cardiolipin restores respiratory efficiency and reduces reactive oxygen species in cells with impaired mitochondria, using oxygen consumption and ROS assays.
Clinical trial history
Elamipretide has been tested in primary mitochondrial myopathy and several other conditions with mixed results. It has one of the more substantial registered trial records of any compound in this catalogue. 2
References
- 1The mitochondria-targeted peptide SS-31 binds lipid bilayers and modulates surface electrostatics as a key component of its mechanism of action. J Biol Chem (2020). PMID 32273339
- 2Elamipretide: A Review of Its Structure, Mechanism of Action, and Therapeutic Potential. Int J Mol Sci (2025). PMC11816484
Links open the record on PubMed or PubMed Central. These are citations to published research, not claims about this product.
Laboratory uses
Applications
Where SS-31 is used in the laboratory
- Mitochondrial membrane and cardiolipin interaction studies
- Reactive oxygen species and oxidative stress research in cell culture
- Mitochondrial bioenergetics and respiration assays
- Comparative studies alongside other mitochondria-targeted compounds
Batch COA
Verification
Does SS-31 come with a COA?
Yes — every box. Each batch of SS-31 is analysed by an independent third-party laboratory, and the certificate is tied to the batch number on the vial label.
Example COA. You receive the certificate matching your own batch.
Questions & answers
Questions
SS-31 questions, answered
Why does SS-31 concentrate in mitochondria?
Its alternating aromatic-cationic residue pattern gives the molecule a net positive charge alongside lipophilic character. That combination drives accumulation in the inner mitochondrial membrane, where it associates with cardiolipin, independently of the membrane potential that most mitochondrial probes rely on.
How much does SS-31 cost?
SS-31 starts at $10.66 per vial, sold in boxes of 10 vials at $106.64 per box (about £79.89). 2 strengths available: 10 mg, 50 mg. There is no minimum order.
Can I buy SS-31 10mg vials in the UK?
Yes. SS-31 10mg comes in boxes of 10 vials at $106.64 per box ($10.66 per vial, about £79.89 per box), sent tracked to UK addresses. There is no minimum order.
How is SS-31 shipped to the UK and USA?
Tracked to the UK, USA, EU and worldwide, in plain packaging, dispatched within 1–2 working days. Country-by-country estimates are on the shipping page.
