If a supplied lot fails agreed specifications, we’ll replace it at no cost or refund its purchase price in full.
Quality test failed? Free replacement or full refund.
Off-spec? Free replacement or full refund.
PCAC will review 7 peptides for the 503A bulks list, BPC-157, KPV, TB-500, MOTS-c, Emideltide, Semax, Epithalon. Read our briefing →
PCAC will review 7 peptides for the 503A bulks list. Read →
FDA PCAC reviews 7 peptides in July. Read →
Mitochondrial-derived peptide
Supply and ordering
Ask sales about MOTS-c (Human) availability, order quantities, packaging, and batch documentation. Include other catalog items in the same inquiry if you are planning a combined or recurring order.
Overview
MOTS-c is a 16-amino-acid mitochondrial-derived peptide (sequence MRWQEMGYIFYPRKLR) encoded within the 12S ribosomal RNA region of the human mitochondrial genome. It is one of the better-characterized members of the emerging field of mitochondrial-derived peptides (MDPs), which represent a novel class of small peptides translated from short open reading frames within mitochondrial rRNAs. MOTS-c signals through AMPK-pathway activation and has been studied for effects on insulin sensitivity, exercise capacity, glucose metabolism, weight regulation, and age-related mitochondrial dysfunction, making it one of the most translationally promising peptides in the mitochondrial-research category. PeptideXpo supplies MOTS-c acetate as a lyophilized powder to a ≥99.0% HPLC purity specification. Every released lot comes with its batch COA covering peak-integration HPLC purity and mass spec confirming the ~2174.6 Da theoretical mass; water content and counter-ion are available on request and listed on the COA when tested. Sequence verification by LC-MS/MS is available on request. The molecule's relatively short half-life in plasma (minutes to low hours) makes it a research tool for acute mitochondrial-signaling studies rather than chronic-elevation work, protocols typically use repeated dosing or sustained-release formulations to maintain biological exposure. Four standard fill sizes (10-40 mg) accommodate both research aliquot work and compounding-pharmacy dispensing.
Who buys this, and why
Mitochondrial-targeted peptides ship primarily to research labs studying OXPHOS, ROS biology, and mitochondrial dysfunction in disease models. The lipophilic / cationic character that drives mitochondrial accumulation also makes these peptides somewhat oxidation-prone in solution, working stocks should be prepared fresh or held at -80 °C rather than -20 °C when the workflow permits.
Primary buyer fit: 503A / 503B compounding pharmacies and academic and contract research laboratories.
Specifications
Also available as a nasal spray (US stock)
Besides lyophilized vials, MOTS-c (Human) is stocked in the US as a ready-to-use nasal spray.
Documentation available on request
Each picture is a low-resolution preview of a report's first page, with batch and report numbers covered. For the full, clear report, ask our sales team, naming the product and strength.
Batch COAMOTS-c (Human) 10 mg
HPLC purity · MS identity
Batch COA
Full, clear copy from sales
Batch COAMOTS-c (Human) 15 mg
HPLC purity · MS identity
Batch COA
Full, clear copy from sales
Batch COAMOTS-c (Human) 20 mg
HPLC purity · MS identity
Batch COA
Full, clear copy from sales
Batch COAMOTS-c (Human) 40 mg
HPLC purity · MS identity
Batch COA
Full, clear copy from sales
Third-party reportMOTS-C 10 mg
HPLC purity · MS identity
Third-party laboratory, Tianjin, China
Full, clear copy from sales
Independent test fails? Full refund. How it works
Regulatory note
Currently under FDA PCAC review (July 2026) for inclusion on the 503A bulks list with the proposed indications of obesity and osteoporosis.
Selected literature
Frequently asked questions
MOTS-c was one of the first mitochondrial-derived peptides (MDPs) identified, a class of small peptides translated from short open reading frames within mitochondrial ribosomal RNA. The discovery upended the conventional view that mitochondrial DNA encodes only 13 protein products (subunits of the OXPHOS complexes), revealing a second tier of nucleus-targeted signaling peptides emerging from mitochondrial transcripts. MOTS-c specifically acts retrograde from mitochondria to nucleus, activating AMPK-pathway signaling and modulating nuclear gene expression in response to metabolic stress. The mechanism is mechanistically distinct from most other peptide therapeutics in the longevity / metabolism space.
Both are research peptides relevant to mitochondrial biology, but they act through completely different mechanisms. MOTS-c is an endogenously-encoded peptide that signals retrograde from mitochondria to nucleus through AMPK and related metabolic-sensor pathways, its activity is essentially signaling and gene-expression modulation. SS-31 (Elamipretide) is a synthetic mitochondria-targeted peptide that accumulates in the inner mitochondrial membrane and protects cardiolipin from peroxidation, its activity is direct biochemical protection of OXPHOS machinery. Buyers selecting between them should match the mechanism to the experimental question: metabolic signaling research favors MOTS-c; oxidative-stress and OXPHOS-integrity research favors SS-31.
Yes. MOTS-c (Human) is also stocked as a ready-to-use nasal spray (10 mg) in 10 mL or 20 mL bottles, from 10 bottles of each. These orders ship from our US stock; ask our sales team for details and a quote.
Send any vial from your order to an independent laboratory of your choice. If the report shows the product does not meet the specification on its COA — purity below the stated minimum, or an identity that does not match — share the report with our sales team and we refund that product in full.
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