# Buy SS-31 Peptide 10 mg in Australia

Supplied by Australian Research Peptides Pty Ltd to laboratories and
researchers in Australia, for in vitro research purposes only. Stock is
held and dispatched within Australia.

SS-31 10 mg, the four-amino-acid research peptide also called elamipretide and MTP-131, comes from Australian Research Peptides as one freeze-dried vial for laboratories and researchers in Australia at $84.99, in stock, and business-day orders paid before 12pm Sydney time ship the same day. SS-31's 10 mg certificate shows 99.782% purity. Published studies describe SS-31 binding cardiolipin, a fat found almost only in the inner wall of mitochondria, where a cell makes its energy. An independent laboratory the manufacturer engages checks purity and identity by chromatography and by mass spectrometry, which weighs the molecule. In vitro research purposes only.

Research context: mitochondrial function.

## Strengths, prices and availability

| Strength | Price (AUD) | Availability | SKU |
| --- | --- | --- | --- |
| 10 mg | $84.99 | In stock | 23814 |

## Certificate of analysis

Tested by Janoshik, an independent laboratory, before release. The
testing is commissioned by the manufacturer rather than by Australian
Research Peptides. Methods: HPLC for purity, mass spectrometry for
identity. Each certificate below is the laboratory's own report,
published on this site.

### 10 mg

- Assayed purity: 99.782%
- Measured peptide content: 13.46 mg
- Date analysed: 19 June 2026
- Testing laboratory: Janoshik
- Certificate: https://www.australianresearchpeptides.au/assets/coa/ss-31-10-coa.png?v=125

Full certificate library: https://www.australianresearchpeptides.au/coa

## Specifications

| Property | Value |
| --- | --- |
| Scientific name | Elamipretide (SS-31; MTP-131) |
| Compound class | Synthetic tetrapeptide; Szeto-Schiller mitochondria-targeted peptide |
| Sequence | D-Arg-Dmt-Lys-Phe-NH2 |
| Appearance | White to off-white lyophilised powder |
| Packaging | Sealed, tamper-evident glass vial |
| Storage | Unopened lyophilised powder kept dry and below -15 °C for long-term storage; solutions aliquoted and kept frozen |

## About

SS-31 is studied in research on mitochondria, the parts of a cell that make its energy, and more specifically on how the folded inner wall of a mitochondrion keeps its shape while it makes ATP, the chemical a cell runs on. Zhao and colleagues reported in 2004 that peptides of this design build up roughly a thousandfold inside that wall. Birk 2013 reported strong binding to cardiolipin, and protection of those folds when the blood supply to a rat kidney was cut off. All of this is laboratory and animal evidence.

SS-31 belongs to the Szeto-Schiller series, named after Hazel Szeto and Peter Schiller, whose laboratories described short chains that alternate ring-shaped and positively charged amino acids. Its four amino acids are D-arginine, 2,6-dimethyltyrosine, lysine and phenylalanine, written D-Arg-Dmt-Lys-Phe-NH2, and Zhao 2004 credits the dimethylated tyrosine with mopping up damaging molecules called free radicals. PubChem lists the identical structure under the name elamipretide.

Elamipretide, the generic name for the same molecule, has also been through registered trials, and those records are public. MMPOWER-3, a phase-3 trial with 218 participants, did not meet either of its two main measures in 2023, and a separate open-label extension study published 168-week follow-up data in 2024. The vial sold here is a laboratory reagent, not trial material, and Australian Research Peptides draws no conclusions from those studies about its own product.

Australian Research Peptides lists one 10 mg SS-31 vial under Mitochondrial Research, and it comes up whether you search SS-31, SS31, SS 31, elamipretide, Szeto-Schiller or MTP-131. Parcels are sent from an Australian address by tracked post, so nothing on this listing waits at a border for clearance. Batches are tested before they are listed, and the CoA library shows where a certificate has been published.

## Questions

### Where to buy SS-31 in Australia?

Australian Research Peptides, a locally registered company, supplies SS-31 to Australian laboratories and researchers as one 10 mg vial for A$84.99, in stock and sent from Sydney, tested at 99.782% HPLC purity per its [Janoshik certificate](https://www.australianresearchpeptides.au/coa) (June 2026). It keeps its stock here rather than shipping vials in from overseas after each order, and the vial holds freeze-dried powder under a tamper-evident seal. PayID and direct bank transfer are the two ways to pay, and there are no wallets, instalment plans or crypto. Parcels go by tracked post, with Express Post available when a laboratory is short on time.

### Who supplies SS-31 in Australia?

Australian Research Peptides is the Australian supplier of SS-31, sending it from a local address to laboratories and researchers in every state and territory. The peptide, known in research papers as elamipretide, comes in a single 10 mg strength and sits under Mitochondrial Research alongside NAD+ and Epitalon. Orders are domestic, so a vial never passes through Border Force on its way to a laboratory.

### How much does SS-31 cost in Australia?

SS-31 costs A$84.99 for the 10 mg vial (in stock) at Australian Research Peptides, its one strength, so there is a single price per vial in Australian dollars. The vial carries the HPLC Verified grade, the label the shop gives its research peptides. Weekday orders paid ahead of 12pm Sydney time are dispatched that day.

### How to get SS-31 online in Australia?

To get SS-31 online in Australia, choose the 10 mg vial on this page, complete checkout, and pay by PayID or bank transfer to Australian Research Peptides' Australian account. Availability is shown live from the catalogue when the page loads, rather than promised in this text. Delivery is within Australia only: elamipretide is not shipped overseas, and an order never creates an international parcel.

### How long does SS-31 take to arrive in Australia?

SS-31 is sent by tracked post, with Standard delivery quoted at 2–5 business days and Express Post at 1–2 days to most capitals, 1–3 for Queensland and 2–4 for WA and the Northern Territory. Orders paid on a weekday before the 12pm Sydney time cut-off are packed that day, as long as stock allows. A tracking email is sent when the parcel is handed to the carrier, and that number is where any delivery question starts.

### What is SS-31?

SS-31 is a laboratory-made peptide just four amino acids long, designed to collect inside mitochondria, the parts of a cell that make its energy, rather than spreading evenly through the cell. What sets it apart is a strong attraction to cardiolipin, a fat found almost only in the inner wall of a mitochondrion. That precise target is what interests researchers: a compound that reaches one part of the cell instead of going everywhere at once.

### What is SS-31 also known as?

SS-31 is also known as elamipretide and MTP-131, three names for one compound, while SS31, SS 31 and Szeto-Schiller peptide are just other ways people write or say it. Elamipretide is its official generic name, agreed internationally. PubChem lists all of these forms as synonyms on compound record 11764719, so anyone comparing suppliers that use different labels is looking at the same molecule.

### Is SS-31 the same as elamipretide?

Yes, SS-31 and elamipretide are the same four-amino-acid peptide, and elamipretide is simply its official generic name, so the two names can be used interchangeably. The structure is identical whichever name is used: the same four amino acids in the same D-Arg-Dmt-Lys-Phe-NH2 arrangement, with one PubChem record. A published paper may use either name, so search for both when reading up on this compound.

### What does the SS in SS-31 stand for?

The SS in SS-31 stands for Szeto-Schiller, after Hazel Szeto at Weill Cornell and her collaborator Peter Schiller, whose laboratories described this family of short peptides that head for the mitochondria. PubChem lists Szeto-Schiller peptide among the compound's recognised synonyms. The number that follows identifies this member of the series, and it is not a strength, a purity figure or a batch number.

### How does SS-31 work?

Published studies describe SS-31 settling into the inner wall of a mitochondrion and sticking to cardiolipin, the negatively charged fat that the wall needs to fold into its pleats. [Birk 2013](https://pubmed.ncbi.nlm.nih.gov/23813215/) used a glowing copy of the peptide to show strong cardiolipin binding in rat kidney mitochondria, and reported that this held back one chemical activity of the protein cytochrome c, called its peroxidase activity. Mitchell 2020 added another piece: the peptide settles into the membrane surface and changes the electrical charge there.

### What is cardiolipin, and why does SS-31 bind to it?

Cardiolipin is a fat with four tails found almost only in the inner wall of a mitochondrion, where it helps that wall fold into the pleats researchers call cristae. It carries a negative charge, which is why a positively charged peptide such as SS-31 collects there. Birk 2013 and Mitchell 2020 both point to this attraction between opposite charges as the reason the compound ends up there rather than spreading through the cell.

### Is SS-31 an antioxidant?

SS-31 was first described as an antioxidant, but the picture has since become more complicated, which is worth knowing before relying on older sources. Zhao 2004 credited the dimethylated tyrosine with mopping up damaging molecules called free radicals, and showed that near-copies without it failed the same laboratory tests. Mitchell 2020 then reported that sticking to fatty membranes and changing the electrical charge at their surface is a key part of the mechanism. Both papers stand, and they do not describe the compound in quite the same way.

### How many amino acids are in SS-31?

SS-31 has four amino acids, D-arginine, 2,6-dimethyltyrosine, lysine and phenylalanine, linked in that order, with the end of the chain capped by an amide group rather than left as a free acid. That is short, even for a research peptide. The milligram figure on the label is not a count of amino acids: it is the weight of dried powder, and the two numbers are unrelated.

### What is the amino acid sequence of SS-31?

The SS-31 sequence is D-Arg-Dmt-Lys-Phe-NH2, which reads D-arginine, 2,6-dimethyltyrosine, lysine and phenylalanine from the amino end of the chain, with an amide capping the other end. PubChem record 11764719 lists exactly that string among the compound's synonyms. Two details make it different from an ordinary peptide: the arginine is the mirror-image D form rather than the usual L form, and the tyrosine carries two extra methyl groups.

### What is the molecular weight of SS-31?

[PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/11764719) records the free SS-31 peptide at 639.8 g/mol with the formula C32H49N9O5, on compound record 11764719, the entry it files SS-31 under. Those figures describe the free base, meaning the peptide on its own. Research peptides are often supplied as a salt, joined to an acid such as acetate, and a salt weighs more, so Australian Research Peptides quotes the PubChem value as a database figure, not as a specification of what is sealed in this vial.

### What is the CAS number for SS-31?

SS-31 has the CAS number 736992-21-5 on PubChem's elamipretide record, which also lists the UNII code 87GWG91S09 and the ChEBI identifier 233331 for the same compound. A registry number identifies one specific chemical form, and a salt of the same peptide has its own number. The number above is the one public databases attach to the free base, meaning the peptide on its own, and not a statement of the form in the vial.

### Who discovered SS-31?

Hazel Szeto's laboratory at Weill Cornell, working with Peter Schiller, described this family of short peptides that head for the mitochondria in the early 2000s, and Zhao 2004 set out the design in the Journal of Biological Chemistry. An earlier 2003 paper by the same authors studied a related four-amino-acid peptide made from the same four building blocks in a different order. The names elamipretide and MTP-131 both came later.

### What does the research show about SS-31?

The published research on SS-31 is extensive in laboratory and animal studies and smaller in registered trials, which use its generic name, elamipretide. The laboratory and animal work covers cardiolipin binding, protection of the inner-wall folds in rat kidneys starved of blood, a changed electrical charge at the membrane surface, and less breakdown of those folds in rat hearts after the same interruption. The trial results are mixed: MMPOWER-3 did not meet either main measure in 218 participants, while a separate open-label extension study reported 168-week follow-up data in 2024. None of it describes the research vial sold by Australian Research Peptides.

### Which laboratory models has SS-31 been studied in?

SS-31 has mostly been studied in isolated mitochondria, cultured nerve cells and rodent organ models, especially rat kidneys with their blood supply cut off and rat hearts where it was cut off then restored. Mitchell 2020 added man-made fatty membranes and computer modelling to that list. Every one of these is a laboratory or animal system.

### Has SS-31 been tested in clinical trials?

Yes, elamipretide, the generic name for SS-31, has been through registered clinical trials, and the results are in the peer-reviewed literature rather than relying on a supplier's description. [MMPOWER-3](https://pubmed.ncbi.nlm.nih.gov/37268435/), a randomised phase-3 trial with 218 participants, reported in 2023 that it did not meet either of its two main measures. Results from a separate 168-week open-label extension were published in 2024. Australian Research Peptides supplies a laboratory reagent and has no connection to either study.

### Who is SS-31 for?

SS-31 from Australian Research Peptides is for laboratories, universities and independent researchers working on mitochondria, and it is sold for in vitro laboratory research only, meaning work in glassware and cell culture. It suits bench work on the inner wall of the mitochondrion, on cardiolipin and on tests of oxidative stress, the damage oxygen can do inside cells. It is not sold to members of the public for personal use, and no usage guidance is given.

### Is SS-31 a mitochondrial peptide?

SS-31 is described in the literature as aimed at mitochondria rather than made by them, a difference worth knowing when comparing it with the other products in this category. It is made synthetically and reaches mitochondria because its positive charge draws it to cardiolipin. MOTS-C, by contrast, is coded in the DNA inside mitochondria themselves. Both belong to the same research field, but only MOTS-C is actually written in the mitochondrial genome.

### How is SS-31 different from NAD+?

SS-31 and NAD+ are different kinds of molecule: SS-31 is a four-amino-acid peptide made in a laboratory, while NAD+ is not a peptide at all but a small helper molecule built from two nucleotides. SS-31 is studied for sticking to a fat in the membrane, while NAD+ is studied as a carrier that moves electrons through the chemical reactions a cell uses for energy. Australian Research Peptides lists both under Mitochondrial Research because the research field overlaps, but chemically they are unrelated.

### What is the difference between SS-31 and MOTS-C?

SS-31 and MOTS-C differ most in length and origin: SS-31 is four amino acids long and made synthetically, while MOTS-C is sixteen amino acids long and coded in the DNA inside mitochondria. They are studied for different targets too: a membrane fat called cardiolipin for SS-31, and AMPK, a protein that senses how much fuel a cell has, for MOTS-C. Australian Research Peptides lists both under Mitochondrial Research as separate vials, and no published study tests them together.

### Is SS-31 sold as a blend with NAD+ or Epitalon?

No, SS-31 is sold only as a single-compound vial, and Australian Research Peptides does not sell a blend of it with NAD+ or Epitalon. All three are separate products in the Mitochondrial Research category, each in its own vial, and no published study tests SS-31 in combination with either of the others.

### What exactly is supplied in an SS-31 vial?

An SS-31 vial contains one substance only, dried elamipretide peptide, sealed in glass under a tamper-evident cap with the amount printed on the label. There is no second peptide, no added carrier protein, and no liquid or water. It is a single compound rather than a blend, so all of the powder in the vial is the compound named on this page.

### How do you reconstitute SS-31?

Reconstituting SS-31 means dissolving the dried peptide in a sterile laboratory diluent, letting it run down the inside of the glass rather than onto the powder, and swirling gently rather than shaking. Shaking pushes air through the solution and causes foam. Wait until the liquid is clear. Split into portions, known as aliquots, the solution can then be stored frozen.

### What volume of diluent goes into a 10 mg SS-31 vial?

Australian Research Peptides publishes no set volume of diluent for the 10 mg SS-31 vial, because the amount of liquid is decided by each laboratory's own method. Whatever volume is added, the amount of peptide in the vial stays the same, so only the strength of the solution changes.

### What is SS-31 dissolved in for laboratory work?

SS-31 is supplied as a dry powder, so it has to be dissolved before any laboratory work begins, usually in a water-based diluent. The vial holds the peptide alone, with no second powder and no liquid, and nothing else comes in the box with it, so the laboratory uses its own diluent.

### How should SS-31 be stored?

An unopened SS-31 vial should be stored in a freezer below -15 °C, kept dry and away from light, and warmed to room temperature with the cap still on before it is opened. Cold glass pulls moisture from the air as soon as it is uncapped. Two of its four amino acids, 2,6-dimethyltyrosine and phenylalanine, have flat carbon rings, and side chains like these are the ones most worth keeping out of the light. Solutions are split into portions and kept frozen.

### How long does reconstituted SS-31 keep?

Reconstituted SS-31, meaning SS-31 already mixed with liquid, is kept at 2–8 °C, and Australian Research Peptides' published window for any research peptide in that state is 8–12 weeks, which applies here too. Keep an eye on the other clock as well: a preserved diluent has its own shelf life once opened, and that can be the shorter of the two. Splitting the solution into portions on the day it is mixed avoids freezing and thawing it again and again.

### Why is SS-31 cloudy after mixing?

An SS-31 solution that looks cloudy soon after mixing is nearly always caused by air, because tiny bubbles gather near the surface and then settle out on their own. Liquid taken straight from a freezer also stays slightly cloudy until it warms up. If the vial is still not clear after ten minutes at room temperature, the likely cause is undissolved powder or peptide that has clumped together, not trapped air.

### Is it normal for an SS-31 vial to look empty?

Yes, it is normal for an SS-31 vial to look empty, because ten milligrams of a four-amino-acid peptide dries to a film so thin that it is hard to see through the glass. Judging the amount by eye simply does not work at this scale. Tip the vial slowly under a light and look for loose particles moving across the base. Very small peptides also tend to spread up the walls during freeze-drying instead of settling into one visible mound.

### Does an SS-31 vial come with anything else?

An SS-31 vial comes with nothing else, because the 10 mg vial contains dried peptide alone, with no diluent and no measuring equipment in the box. What it is dissolved in and how the solution is handled are decided by the laboratory's own method, and the certificate for each batch is in the CoA library on this site.

### Is SS-31 tested before it is supplied in Australia?

SS-31 goes through two separate tests before it is listed for sale in Australia, both carried out by an independent laboratory the manufacturer engages. Chromatography separates the material as it passes through a column and measures what share of it comes off as a single peak. Mass spectrometry then weighs the molecule to check it matches a four-amino-acid chain carrying the doubly methylated form of tyrosine rather than the ordinary one. That difference is small, which is exactly why the identity test matters. A matching certificate is currently published for this product and strength.

### What does the analytical testing on SS-31 actually establish?

Chromatography and mass spectrometry, a separation test and a weighing test, show how pure an SS-31 batch is and how much the molecule weighs. Each certificate covers only the batch that was tested, not every vial of the product ever made. SS-31 is sold to laboratories and researchers for in vitro research only.

### Is SS-31 legal in Australia?

SS-31 is not an approved medicine in Australia, and a search of the Australian Register of Therapeutic Goods for elamipretide finds no matching entries, so no product under that name is registered for supply here. Australian Research Peptides supplies it as a laboratory reference compound for research in glassware and cell culture. [The TGA](https://www.tga.gov.au/products/unapproved-therapeutic-goods) publishes guidance on goods it has not approved.

### Is SS-31 FDA approved?

One elamipretide (SS-31) medicine from its developer received US FDA accelerated approval on 19 September 2025, but the SS-31 sold by Australian Research Peptides is not that product. It is a laboratory reference compound supplied to laboratories and researchers for in vitro research. That approval covers the developer's own finished medicine only and does not extend to research material from any other source.

### Can you legally import SS-31 into Australia?

Importing SS-31 into Australia comes under the rules for goods the TGA has not approved, because the ARTG, Australia's register of approved therapeutic goods, has no entry for elamipretide under any name. The TGA publishes guidance on how those rules work for anyone bringing such goods in. An order from Australian Research Peptides is a domestic Australian sale and involves no importing across a border.

### Is SS-31 banned in sport?

SS-31's status in sport is set by the World Anti-Doping Agency's Prohibited List, which Sport Integrity Australia administers here, and Australian Research Peptides does not rule on any compound's status. It supplies SS-31 only to laboratories and researchers, for in vitro research, and the vial sold here is not intended for people.

### Can I buy SS-31 at Chemist Warehouse?

No, Chemist Warehouse does not sell SS-31, and no Australian pharmacy stocks it, because no elamipretide product is registered for supply in Australia. Australian Research Peptides lists SS-31 as a 10 mg research vial, sold to laboratories and researchers for in vitro use rather than through pharmacies.

### How do I pay for SS-31?

PayID and direct bank transfer are the two ways to pay for an SS-31 order, and either way the order is confirmed once the payment is matched, not at checkout. Both options hold the vial while the money comes through, and that hold has a deadline counted in business days rather than calendar days. Weekends do not count toward it.

### How will I know when SS-31 is back in stock?

Leave your email on the SS-31 listing and Australian Research Peptides will send you a single email when the vial is back in stock, one message per request and never a recurring newsletter. If an address has opted out of these notices, sending the form again later does not add it back. To be told about the next restock after a notice arrives, simply sign up again.

### What is the difference between SS-31, SS31 and SS 31?

There is no chemical difference, because SS-31, SS31 and SS 31 are three ways of typing the same compound name, and the site's search recognises all three. The hyphenated form, SS-31, is the one used in published research and on this listing. Searching elamipretide, MTP-131 or Szeto-Schiller also finds the same vial, since each is a recognised synonym on PubChem record 11764719.

## Ordering

- Standard post $12.99, free on orders over $199.00
- Express post $16.99, free on orders over $299.00
- Payment: PayID or bank transfer
- Dispatched from within Australia; orders do not cross a border

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