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SS-31 Peptide

Homes in on the mitochondria's inner membrane to keep the cell's power plant running clean. Studied in mitochondrial research.
Vial size 10mg Use Peptide Planner

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SKU: PP-SS31-10MG

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What SS-31 is

Mitochondrial peptide, plain

A tiny peptide that homes in on the cell's power plants.

Built to go straight to the mitochondria.

SS-31 is a small peptide built to do one targeted thing: head straight for the mitochondria.

(A peptide is a short chain of the building blocks your body uses.) Mitochondria are the power plants inside your cells, and they have a specific inner membrane that SS-31 is designed to concentrate at. That targeting is the whole point.

It lives on the Skin + Longevity shelf next to cellular-energy compounds like MOTS-c.

What it actually does

SS-31 is studied for how it interacts with cardiolipin, a lipid in the inner membrane of mitochondria that matters for how those power plants run.

The idea researchers poke at is whether stabilizing that membrane helps mitochondria hold up under stress. Mostly cell and animal work. That is the mechanism. We're describing what gets studied, not promising an outcome.

The research so far

SS-31, also called elamipretide, has a focused mitochondrial-research file. You can dig into the literature on PubMed.

Cardiolipin

The inner-membrane lipid it interacts with.

Targeted delivery

Designed to reach the mitochondria specifically.

Research only

We stock it for research. The studies write the conclusions, not us.

A precise tool for studying mitochondrial membranes.

SS-31 specs

Compound specification SKU PP-SS31-10MG
Also known as
Elamipretide, MTP-131
What it is
Synthetic mitochondria-targeted tetrapeptide
Sequence
D-Arg-Dmt-Lys-Phe-NH2
Molecular formula
C32H49N9O5
Molecular weight
639.79 g/mol
CAS number
736992-21-5
Purity
≥99% HPLC
Format
Freeze-dried powder
Storage
Keep it cold and out of the light

The backstory

SS-31 came from work on peptides that could target a specific spot inside the cell.

  1. Targeted design

    Built to concentrate at the mitochondrial inner membrane.

  2. The cardiolipin link

    Research focused on its interaction with that membrane lipid.

  3. Where it stands

    A defined mitochondrial-research target. We're not telling you what it does for you, just where the studies look.

Buying SS-31 in Canada

The short version

Read the COA before you buy, not after

Every batch ships with its Certificate of Analysis, right here on this page. A number on a label means nothing without the paper to back it.

Same-day, packed cold

Order SS-31 in Canada and it's out the door today. Cold chain, domestic shipping.

Freeze-dried 10mg vial

Lyophilized powder, sealed. No ice required for shipping.

Sold for research

Not for human consumption. Nothing on this page is a medical claim.

Pairs with the rest of the shelf

Order it

SS-31, lyophilized, COA on the page

For research use only. A mitochondria-targeted peptide with a clean Certificate of Analysis right here.

Not for human consumption. Not approved by Health Canada or any other regulatory body. This product is intended for in vitro and laboratory research applications only.

Certificate of Analysis

HPLC verified. The COA ships with every batch.

99.4%
HPLC Purity
✓ COA Verified

Batch PP-SS31-10MG-A

Tested
April 2026
Method
HPLC + Mass Spectrometry
Vial size
10mg lyophilized
Stored at
2 to 8°C, dark

Test results

HPLC verified
HPLC Purity99.4%✓ Pass
Mass spec confirmationConfirmed✓ Pass
Net peptide contentWithin spec✓ Pass
Endotoxin screenBelow detection✓ Pass
Visual inspectionUniform white powder✓ Pass
Every order ships with the COA matching that specific batch. If your source does not provide a COA, that is not a source. That is a mystery box.

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Stuff people ask us

If your question's not here, email us. Real human answers.

What is SS-31?
SS-31 (elamipretide) is a synthetic mitochondria-targeted tetrapeptide studied for its interaction with the inner-membrane lipid cardiolipin. Sold as a lyophilized powder for research use only.
What is the molecular weight of SS-31?
SS-31 has a molecular weight of 639.79 g/mol and the molecular formula C32H49N9O5 (CAS 736992-21-5).
How is the purity verified?
Every batch is tested by HPLC to at least 99% purity, and the Certificate of Analysis for that batch ships with the order and is shown on the product page.
How should it be stored?
Store the lyophilized powder cold and protected from light. Keep it sealed until use to maintain stability.
Does it come with a COA?
Yes. Every batch ships with its Certificate of Analysis, shown right on the product page, so you can confirm purity before you buy.
What does "research use only" mean?
It means this product is intended strictly for laboratory research. It is not for human or animal consumption, and nothing on this page is a medical or therapeutic claim.

Not for human consumption. Not approved by Health Canada. For in vitro research only.