Test it yourself. If it fails, you get a full refund.
Independent test fails? Full refund.
Independent test fails? Full refund.
10 vials per kit, from 1 kit per product and strength. We reply to every quote request within 24 hours. How quotes work →
10 vials per kit · from 1 kit · reply within 24 hours Quotes →
10 vials per kit · from 1 kit Quotes →
Elamipretide: the tetrapeptide D-Arg-Dmt-Lys-Phe-NH2 with a C-terminal amide
Research topic: Skin & ageing · group: Ageing-biology research compounds
SS-31, known by its international name elamipretide, is a synthetic tetrapeptide of D-arginine, 2′,6′-dimethyltyrosine (Dmt), lysine and phenylalanine, closed by a C-terminal amide. It is studied for its binding to cardiolipin, a lipid of the inner mitochondrial membrane. Elamipretide, as a hydrochloride salt, is the active ingredient of an approved medicine. What we supply is the same molecule, but not a medicine: lyophilized research material in vials, and the fact table refers to the free peptide rather than the salt. On pepoderma it sits with the ageing-biology compounds of the skin and ageing topic, next to Humanin and NAD+. The trials in our product data studied adults with primary mitochondrial myopathy.
Same molecule, not a medicine
Elamipretide, as a hydrochloride salt, is the active ingredient of an approved medicine. What we supply is the same molecule, but not a medicine: lyophilized research material in vials, not a finished drug product.
Besides the vials, Elamipretide (SS-31) is bottled as a nasal spray, held in stock in the United States and shipped from there.
The COA of every lot of Elamipretide (SS-31) reports:
Ask for the COA of the batch you are quoted; the batch number on it is the batch we ship.
Independent test fails? Full refund. How the refund works
| Field | Value | Source |
|---|---|---|
| Chemical name | Elamipretide (SS-31) | Our product table |
| Other names | SS-31 / Elamipretide · SS-31 · Elamipretide · MTP-131 | Our product table |
| Sequence | (D-Arg)-(Dmt)-K-F-NH2 (H-D-Arg-2',6'-dimethyl-L-Tyr-L-Lys-L-Phe-NH2) | Our product table |
| Molecular formula | C32H49N9O5 | Our product table |
| Molecular weight | 639.8 g/molFree peptide with a C-terminal amide, as the formula shown (not the hydrochloride salt) | Our product table |
| CAS number | 736992-21-5 | Our product table |
| Strengths (per vial) | 5 mg, 10 mg, 50 mg | Our product table |
| Kit and minimum order | 10 vials per kit · from 1 kit per strength | Our product table |
| Form | Lyophilized powder | Our product table |
| Catalogue codes | 5 mg: SS5 · 10 mg: SS10 · 50 mg: SS50 | Our product table |
| Purity specification | ≥ 99.0% (HPLC)Specification; the measured value is on the COA of the lot. | Our product table |
| Appearance | White to off-white lyophilized powder | Our product table |
| Storage | Store at 2–8 °C, protected from light and moisture | Our product table |
| Batch COA | HPLC purity · MS identity · endotoxin · fill — every lot | Our batch COA |
Product-table values checked 2026-10-09. The measured values of a lot are on its COA.
| First author / trial | Year | Journal | What was studied | Record |
|---|---|---|---|---|
| MMPOWER-3 trial | 2023 | Neurology | Randomised, placebo-controlled trial of elamipretide in adults with primary mitochondrial myopathy | PubMed 37268435 |
| MMPOWER trial | 2018 | Neurology | Randomised escalation trial of elamipretide in adults with primary mitochondrial myopathy | PubMed 29500292 |
Studies recorded in our product data (checked 2026-10-09). They show what has been researched with this molecule — the materials and models of each study — and are not a statement about the vials we supply.
What to put in your quote request
With these facts the first reply can carry the unit price per kit, shipping and lead time.
The peptide is the same molecule. The medicine is a sterile solution of the hydrochloride salt; we supply lyophilized research material in vials, our fact table gives the free peptide, and it is not a medicine.
2′,6′-Dimethyl-L-tyrosine, a tyrosine with two methyl groups on its ring. It is the second residue of SS-31, which is why the formula differs from that of a plain D-Arg-Tyr-Lys-Phe amide.
One kit is 10 vials of the same product at the same strength. Each vial holds the stated amount, for example 10 mg of lyophilized peptide; the few solutions are stated per vial in mg or ml. 1 kit per product and strength. One order can combine several products and strengths, each from 1 kit.
HPLC purity, MS identity, endotoxin and fill, on the COA of every lot of a stocked peptide. The COA carries the lot number, so you can match it to the vials you receive. Yes. Ask for the COA of the batch you are quoted; the batch number on that COA is the batch we ship.
In writing, per request. Prices are tiered by the number of kits of each peptide and strength; the quotation gives the unit price per kit, the shipping cost and the lead time. We reply within 24 hours.
Because listings describe different forms: a free peptide or a salt (acetate, TFA), a copper complex or its free peptide, one peptide or a two-peptide material — and some registries keep older numbers. Each product page says which form its values refer to; the COA of the lot is the reference.
Related peptides
24-mer
Peptide of 24 residues encoded in the mitochondrial MT-RNR2 gene
Nasal spray available
β-Nicotinamide adenine dinucleotide in its oxidised form, the redox coenzyme NAD+
Nasal spray availableCombination capsules
46-mer
46-residue all-D retro-inverso peptide designed against the FOXO4–p53 interaction
Nasal spray available
