SS-31
A synthetic tetrapeptide (D-Arg-Dmt-Lys-Phe-NH2) supplied as a lyophilized acetate salt. Supplied for in-vitro laboratory research — held to a ≥99% reversed-phase HPLC purity specification, with identity confirmed by FTIR (USP <197A>); nothing ships until it passes third-party testing.
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A synthetic tetrapeptide (D-Arg-Dmt-Lys-Phe-NH2) supplied as a lyophilized acetate salt. It is also known as elamipretide or MTP-131. Elyria Bio supplies it as a lyophilized 10 mg reference material, held to a ≥99% reversed-phase HPLC purity specification, for in-vitro laboratory research only.
CAS 736992-21-5. Every lot is held to a ≥99% HPLC purity floor and will ship with its third-party certificate of analysis.
Overview
SS-31 is a synthetic tetrapeptide of four residues, sequence D-Arg-Dmt-Lys-Phe-NH2, where Dmt is 2,6-dimethyltyrosine. Molecular formula C32H49N9O5, molecular weight 639.8. It is also known as elamipretide or MTP-131.
Elyria Bio supplies it as a lyophilized acetate salt, held to a ≥99% reversed-phase HPLC purity specification, with identity confirmed by FTIR (USP <197A>). Every batch will ship with its third-party certificate of analysis documenting purity and identity. Browse the full Series D collection for related reference standards.
Specifications
Representative release specification. Each shipped lot will be documented on its own third-party certificate of analysis.
Certificate of analysis
Every batch will be third-party tested before release, and nothing ships until it passes.
Release specification
A released certificate for this material is listed on this page; the full list is at resources/certificatesIndependent testing
The COA is produced by an independent United States laboratory once testing is complete — not in-house — and reports HPLC purity and identity by FTIR (USP <197A>) for this material's batch.
Storage & handling
Lyophilized SS-31 is stable long-term when kept cold and dry.
Sealed and desiccated, protected from light. Stable approximately 1–2 years from the assay date printed on the COA.
Stability figures describe the material in the unopened container as shipped. Once the seal is broken the storage history is no longer ours to describe.
Ships lyophilized at ambient temperature. Move the vial to −20°C on arrival and keep it dry.
All materials described on this page are supplied for in-vitro research use only. Elyria Bio provides no dosing guidance and supplies nothing for human or veterinary use.
Shipping & guarantees
Handled like the reference materials they are — documented, protected, and dispatched fast within the United States.
Free shipping over $150
Flat $6 U.S. shipping, free over $150 — free express shipping over $250. Every order is fully tracked end to end.
U.S. domestic only24-hour dispatch
Orders ship within 24 hours in protective, tamper-evident packaging with the COA enclosed.
Fast fulfillmentDiscreet packaging
Plain, unbranded outer packaging with no product descriptors visible on the exterior.
Private by defaultShipment protection
Lost, damaged, or stolen packages are reshipped at no cost. Damage claims require photo evidence.
One-time replacement30-day specification claim
If material does not meet its published specification, report it within 30 calendar days of delivery with a third-party lab report. One vial may be opened for testing; the rest return sealed. No change-of-mind returns.
Free return by mailDocumentation & traceability
Certificate of analysis
Reports HPLC purity and identity by FTIR (USP <197A>) for this material's batch.
Batch-level certificates
Certificates cover the batch, not the individual vial, and are published on the product page for the material they cover.
Frequently asked questions
What is SS-31?
A synthetic tetrapeptide (D-Arg-Dmt-Lys-Phe-NH2) supplied as a lyophilized acetate salt. It is also known as elamipretide or MTP-131. Elyria Bio supplies it strictly as an in-vitro laboratory reference material for qualified research professionals.
How pure is Elyria Bio's SS-31?
Every lot is held to a ≥99% reversed-phase HPLC purity floor before release. Identity is confirmed against a reference standard by the laboratory that tested the lot; the method used is stated on that lot's certificate. We publish the actual assay run for each lot rather than a generic claim.
Does SS-31 ship with a certificate of analysis?
Yes. Each batch will ship with its third-party certificate of analysis produced by an independent United States laboratory once testing is complete, reporting HPLC purity and identity by FTIR (USP <197A>). The batch we hold has been tested by an independent laboratory and its certificate is published on this page.
How should SS-31 be stored?
Store the lyophilized powder sealed and desiccated at −20°C, protected from light, where it is stable for 1–2 years. Keep it in the unopened container until it is used, and return it to −20°C promptly after handling.
Is there bulk pricing for SS-31?
Yes. Multi-vial packs are discounted: the 3-pack is 13% off, the 5-pack 19% off and the 10-pack 25% off. Discounts apply to pack SKUs, not to individually added vials. Orders over $150 ship free within the United States, with free express shipping over $250.
Explore Elyria Bio
Reference materials, documentation, and collections related to SS-31.
Series D materials
All Series D →SS-31 is supplied as an in-vitro laboratory research material for qualified professionals. It is not a drug, supplement, or food, is not for human or veterinary use, and has not been evaluated by the FDA. Descriptors reference documented in-vitro and pre-clinical research context only and make no therapeutic claim. By purchasing, you represent that you are a qualified researcher acquiring this material for legitimate laboratory research.