Ordered Friday 3 PM, delivered Tuesday morning in Utrecht. Neatly packed and the COA simply arrived by email.
Sven K.
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Buy SS-31, mitochondria-targeting tetrapeptide (elamipretide, research grade), ≥99% HPLC, same-day from the Netherlands. Research only.
€ 39,95
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Bacteriostatic water
Needed to reconstitute lyophilised vials.
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SS-31, also known as elamipretide, is a synthetic tetrapeptide that specifically targets the mitochondria, the power plants of the cell. It binds to cardiolipin, a lipid in the inner mitochondrial membrane, and is linked in research to protecting mitochondrial function and reducing oxidative stress. Under the name elamipretide, the substance received accelerated FDA approval in 2025 as a medicine (brand name Forzinity) for the rare Barth syndrome. In the wider research and longevity space it is known as SS-31. At GradePurity you buy it as a research-grade peptide, not as a medicine: a lyophilised vial with ≥99% HPLC purity, shipped same-day from the Netherlands.
What is SS-31?
SS-31 is a synthetic tetrapeptide, a small protein of just four amino acids, that targets the mitochondria, the energy-producing parts of the cell. What makes it distinctive is that it selectively reaches the inner mitochondrial membrane and binds there to cardiolipin, a lipid important for energy production. In research, SS-31 is therefore studied around mitochondrial function and cell energy. The substance is also known as elamipretide.
How does SS-31 work?
The mitochondria produce energy (ATP) using structures in their inner membrane called cristae. Cardiolipin holds those structures in place. SS-31 binds to cardiolipin and is linked in research to keeping that membrane structure stable, protecting energy production and reducing oxidative stress (harmful reactive oxygen species). In short: it targets the "charging point" of the cell. It is thought that this supports mitochondrial function; most of this comes from laboratory and animal models.
SS-31 and mitochondrial health
Mitochondria become less efficient as cells age, and that is exactly why SS-31 attracts so much attention in the research world. Preclinical studies have looked at the role of the substance in age-related changes in energy metabolism, for example the restoration of ATP production in aged muscle tissue. That makes SS-31 a much-discussed topic in longevity research. Important: these are research findings, not established effects in humans. GradePurity supplies SS-31 solely as a research substance and makes no anti-aging or health claims.
Elamipretide and Forzinity: the status
SS-31 has a second life as a medicine. Under the name elamipretide, the substance was developed by Stealth BioTherapeutics, and in 2025 it received accelerated approval from the US FDA, under the brand name Forzinity, as the first treatment for the rare Barth syndrome, a hereditary mitochondrial disorder. That approval applies specifically to that one rare disease. What GradePurity supplies is something different: not the medicine Forzinity, but SS-31 as a research-grade peptide for laboratory use. The substance is the same, the context entirely different, a research vial is not intended for human use and does not replace a prescription or medical supervision.
Side effects of SS-31
In clinical research with elamipretide, the substance is generally described as well tolerated. The most commonly reported side effect is an injection-site reaction (redness, irritation); serious side effects were rare in the studies. These are observations from medical research under supervision, not data that says anything about laboratory use. GradePurity supplies SS-31 solely as a research substance and gives no dosing or safety advice for personal use. For the full side effects we refer to the official product information and a doctor or pharmacist.
Reconstituting and storing SS-31
SS-31 is supplied as a lyophilised powder in a vial. For research it is mixed with bacteriostatic water; GradePurity gives no dosing or administration advice. Store the unopened vial dry, dark and cool. After mixing, the solution goes in the fridge (2–8 °C), protected from light, and is used within a short time; for longer storage the unopened vial can go in the freezer. The specifications in the table at the bottom of this page are intended for your research documentation.
Purity and lab testing
Every batch of SS-31 is checked in the lab for purity (≥99% HPLC) and identity. So you know exactly what you are holding, and that is the real difference from anonymous suppliers. Per lot we record the purity and identity data. The exact specifications, sequence, molecular weight and purity, are in the table at the bottom of this page.
Frequently asked questions
What our customers say.
Verified buyers across the Netherlands
★★★★★4.9 / 5Verified
BPC-157
Finally a supplier that just shows the HPLC + MS figures. Purity was exactly as promised.
Lotte v.d. B.
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Fast parcel out of the Netherlands. Emailed a question, got a reply within a few hours. Top service.
Paul M.
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Next business day in Rotterdam. Well and discreetly packed, will definitely order again.
Marco R.
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Ordered around 3 PM, delivered Wednesday morning. Unbranded envelope, my courier had no idea what was inside.
Niels J.
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Within 24 hours from NL stock. COA with MS identity confirmation — hard to find anywhere else.
Jonas W.
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Delivery spot-on, COA detailed. Would appreciate a more extensive FAQ per peptide on the site.
Eva R.
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Ordered Tuesday before 4 PM, at my door Wednesday in Breda. Payment went flawlessly.
Bram H.
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Genuinely from NL stock, so no customs hassle. Vial well freeze-dried, everything tightly packed.
Femke S.
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Purity on the HPLC comfortably above 99%. Delivery a day later than hoped, nothing else to fault.
Thijs M.
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Ordered Friday 3 PM, delivered Tuesday morning in Utrecht. Neatly packed and the COA simply arrived by email.
Sven K.
Verified purchase
Finally a supplier that just shows the HPLC + MS figures. Purity was exactly as promised.
Lotte v.d. B.
Verified purchase
Fast parcel out of the Netherlands. Emailed a question, got a reply within a few hours. Top service.
Paul M.
Verified purchase
Next business day in Rotterdam. Well and discreetly packed, will definitely order again.
Marco R.
Verified purchase
Ordered around 3 PM, delivered Wednesday morning. Unbranded envelope, my courier had no idea what was inside.
Niels J.
Verified purchase
Within 24 hours from NL stock. COA with MS identity confirmation — hard to find anywhere else.
Jonas W.
Verified purchase
Delivery spot-on, COA detailed. Would appreciate a more extensive FAQ per peptide on the site.
Eva R.
Verified purchase
Ordered Tuesday before 4 PM, at my door Wednesday in Breda. Payment went flawlessly.
Bram H.
Verified purchase
Genuinely from NL stock, so no customs hassle. Vial well freeze-dried, everything tightly packed.
Femke S.
Verified purchase
Purity on the HPLC comfortably above 99%. Delivery a day later than hoped, nothing else to fault.
Thijs M.
Verified purchase
The BPC + TB stack comes as two separate vials, each with its own COA. Not pre-mixed — exactly what I wanted.
Tom B.
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The COA was clear and readable. Delivered the next business day in The Hague. Helpful support by email.
Charlotte F.
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Arrived in a plain, neutral envelope. My neighbour who took it in literally had no clue what was inside. Privacy = 10.
Anouk d. V.
Verified purchase
Purity per COA 99.3%. Vial nicely freeze-dried, no yellow discolouration. Shipping from NL trouble-free.
Lukas K.
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Emailed a question on Saturday, Monday morning I got a reply from a real person. No cookie-cutter template. Real service.
Sara P.
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Shipped to Tilburg in one business day. Payment trouble-free. Identity neatly confirmed by MS on the COA.
Daniel S.
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Second order. The first was problem-free, so no reason to look elsewhere. COA again with HPLC + MS figures.
Iris K.
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Messaged a question about storage, got a clear answer. Nice that there is simply someone reachable.
Joris V.
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Completely neutral packaging, nothing visible on the outside. Delivered next day in Nijmegen. Exactly what I was after.
Sanne D.
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Shipped quickly from the Netherlands, and the COA confirmed the purity nicely. Third time ordering here without complaints.
Ruben T.
Verified purchase
The BPC + TB stack comes as two separate vials, each with its own COA. Not pre-mixed — exactly what I wanted.
Tom B.
Verified purchase
The COA was clear and readable. Delivered the next business day in The Hague. Helpful support by email.
Charlotte F.
Verified purchase
Arrived in a plain, neutral envelope. My neighbour who took it in literally had no clue what was inside. Privacy = 10.
Anouk d. V.
Verified purchase
Purity per COA 99.3%. Vial nicely freeze-dried, no yellow discolouration. Shipping from NL trouble-free.
Lukas K.
Verified purchase
Emailed a question on Saturday, Monday morning I got a reply from a real person. No cookie-cutter template. Real service.
Sara P.
Verified purchase
Shipped to Tilburg in one business day. Payment trouble-free. Identity neatly confirmed by MS on the COA.
Daniel S.
Verified purchase
Second order. The first was problem-free, so no reason to look elsewhere. COA again with HPLC + MS figures.
Iris K.
Verified purchase
Messaged a question about storage, got a clear answer. Nice that there is simply someone reachable.
Joris V.
Verified purchase
Completely neutral packaging, nothing visible on the outside. Delivered next day in Nijmegen. Exactly what I was after.
Sanne D.
Verified purchase
Shipped quickly from the Netherlands, and the COA confirmed the purity nicely. Third time ordering here without complaints.
Ruben T.
Verified purchase
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