Lot 55432 Save $25 SS-31 10mg Research Peptide

Research peptide · Lyophilized

SS-31 10mg Research Peptide

SS-31 — USA Made, ≥99% Purity

4.9 177 verified reviews

Four-residue mitochondrial research peptide in a 10mg lyophilized vial
USA manufactured in GMP-certified California and Arizona laboratory facilities
≥99% purity target with third-party HPLC, mass spectrometry, and batch COA

$99.99 $124.99 Save $25

Manufactured in a GMP facility · Independently tested · Batch COA

Dispatched from a US warehouse within 48 hours, tracked

Certificate of analysis for lot 55432 below

Disclaimer

For research purposes only. Not intended for human consumption, medical use, diagnosis, treatment, or prevention of disease.

Specifications

Lot 55432

Purity target

≥99%

≥99% (3rd-Party HPLC Tested)

Molecular mass

639.8

g/mol, confirmed by mass spectrometry

Vial content

10 MG

Lyophilized Powder

Sequence

D-Arg-2,6-dimethyl-Tyr-Lys-Phe-NH2

CAS: 736992-21-5
Molecular mass: 639.8 g/mol
Purity target: ≥99% (3rd-Party HPLC Tested)
Form: Lyophilized Powder
Origin: Manufactured, Formulated & Packaged in CA/AZ, USA
Storage: Store at -20°C (Freeze) or 2–8°C (Refrigerated) protected from light

What is SS-31?

SS-31 is the research code commonly associated with elamipretide, a synthetic tetrapeptide containing four specially arranged residues. Researchers study its affinity for cardiolipin, a phospholipid concentrated in the inner mitochondrial membrane.

Elamipretide is also the active ingredient in the FDA-approved prescription product Forzinity for a narrow Barth syndrome indication. This 321 Peptides lyophilized research vial is not Forzinity, is not an approved drug product, and must not be represented or used as a substitute for it.

How It Works

Targets cardiolipin: SS-31 associates with a phospholipid central to inner-mitochondrial-membrane organization.

Influences membrane function: Researchers examine how that interaction affects electron-transport organization and mitochondrial structure.

Supports mitochondrial-response studies: Downstream work evaluates energy production and oxidative-stress signaling in controlled models.

Analytical data

Every lot, on the record

Independent third-party HPLC evaluates the purity target, while mass spectrometry confirms molecular identity. Both results are documented in one combined, batch-specific Certificate of Analysis.

Purity (HPLC-UV)

99.77%

Net content

11.83 mg

Reported

2026-06-01

Identity (LC-MS): Confirmed
Appearance: White Lyophilized Powder

HPLC MS

Analyte	Method	Result
Identity	LC-MS	SS-31
Purity	HPLC-UV	99.77%
Net Content		11.83 mg

Chromatogram

Mass confirmation

Download COA (PDF)

Why Source from 321 Peptides?

Domestic research-material production.

SS-31 is synthesized and finished in GMP-certified California and Arizona facilities, not sourced from overseas or Mexico.

Clear analytical identity.

Third-party HPLC evaluates the ≥99% purity target and mass spectrometry verifies the modified tetrapeptide mass. One batch-specific COA records both results.

Protected as a lyophilized powder.

Freeze-drying supports stability during storage and transit. Domestic fulfillment keeps the chain of custody short.

Lot history 4 released lots

Every batch released under this compound, with the figure reported for each.

Lot	Reported	Purity	Net content	COA
55432	2026-06-01	99.77%	11.83 mg	PDF
SS-45099 Superseded	2026-04-30	99.58%	10.06 mg	Pending
SS-46253 Superseded	2026-04-23	99.49%	10.08 mg	Pending
SS-45676 Superseded	2026-02-25	99.83%	10.07 mg	Pending

Frequently Asked Questions

What is SS-31 peptide?

SS-31 is a synthetic four-residue peptide associated with the name elamipretide and studied for binding to mitochondrial cardiolipin. Its sequence is D-Arg-2,6-dimethyl-Tyr-Lys-Phe-NH2.

How does SS-31 work?

SS-31 binds cardiolipin in the inner mitochondrial membrane and is studied for effects on membrane organization and mitochondrial function. Experimental outcomes depend on the model and should not be generalized to personal use.

Is SS-31 FDA approved?

Elamipretide received accelerated FDA approval as Forzinity for a specific Barth syndrome indication in qualifying patients. This 321 Peptides research vial is not the approved Forzinity drug product and is not intended for human use.