Popular Peptides
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Get high-quality, high purity GHK-Cu peptides for research involving copper binding, cell signaling, fibroblast activity, and extracellular-matrix processes. Our lyophilized GHK-Cu comes in both 50 mg and 100 mg strengths to suit a wide range of studies. Disclaimer: Licensed Peptides supplies GHK-Cu for laboratory research, analytical testing, and controlled scientific applications. It isn’t intended for human or animal consumption, administration, therapeutic use, clinical use, veterinary use, diagnosis, treatment, cure, or prevention of any disease or medical condition. -
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Glutathione 600mg is supplied strictly for laboratory research use only. This material is intended for analytical and controlled research applications. It is not approved or intended for human or animal use, ingestion, dosing, or therapeutic application. Glutathione is a tripeptide (glutamate–cysteine–glycine) widely used as a reference compound in redox-biology and enzymology research. Published in-vitro literature has characterised it in the following experimental contexts: Redox chemistry. The reduced (GSH) and oxidised (GSSG) forms are commonly quantified as a ratio in cell-culture models used to describe oxidative state. Interconversion between the two forms is catalysed by glutathione reductase. Conjugation chemistry. Glutathione S-transferase enzymes catalyse conjugation of glutathione to electrophilic substrates, a reaction frequently used in enzymology and metabolite-identification assays. Antioxidant cycling models. Its chemical interaction with ascorbate and tocopherol has been described in model systems. Cell-signalling literature. Intracellular glutathione concentration is reported as an experimental variable in published lymphocyte and natural-killer-cell assay models. Enzyme-inhibition literature. Interaction with tyrosinase has been described in in-vitro pigment-chemistry studies. The material is produced as a high-purity research reagent under controlled conditions, with batch-level quality control to support reproducibility across laboratory studies. This product is intended strictly for research and laboratory use only. Not for human or animal use. No statement on this page describes or implies any physiological, cosmetic, diagnostic, or therapeutic effect in humans or animals. -
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IGF-1 LR3 is a synthetic, laboratory-engineered analog of IGF-1 used in controlled research to study receptor interaction, peptide stability, and downstream signaling behavior in experimental systems. This product is supplied strictly for research use only. It is not approved or intended for human or animal use, and any discussion of biological activity refers only to preclinical or in vitro research. This increased bio-availability allows research teams to explore extended cellular signaling events without the rapid degradation typically observed with standard IGF-1. Its stability profile and functional responsiveness have made IGF-1 LR3 a widely utilized peptide in scientific studies focusing on metabolic behavior, protein synthesis pathways, and tissue-repair models. Formulated at 100mcg, IGF-1 LR3 provides laboratories with a flexible and practical quantity for diverse experimental setups, including in-vitro cellular assays, mechanistic pathway investigations, and stress-response modeling. Because the Long R3 form interacts more freely with IGF-1 receptors, with minimal interference from IGFBPs, it is valued in studies examining growth-factor signaling cascades, metabolic responses, and regenerative mechanisms. This product is manufactured to high purity standards and is produced as an LPS-free peptide and endotoxin-free peptide, ensuring minimal background interference in sensitive experimental conditions. All research peptides are endotoxin tested to support reproducibility, consistency, and reliability across laboratory studies. For Research Use Only. Not for Human or Animal Use. This product is intended solely for laboratory research and investigational purposes and is not approved for diagnostic, therapeutic, or consumptive applications. -
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Ipamorelin is a laboratory research peptide used to study receptor signaling, peptide kinetics, and downstream pathway behavior in controlled experimental systems. This product is supplied strictly for research use only. It is not approved or intended for human or animal use, and any discussion of biological activity refers only to preclinical or in vitro research. For research integrity and reproducibility, Ipamorelin is commonly supplied as a high-purity, LPS-free peptide, manufactured under conditions designed to minimize biological contaminants. Use of an endotoxin-free peptide is critical in laboratory environments, as endotoxin interference can significantly alter signaling data and immune-related assay outcomes. Accordingly, research peptides endotoxin tested for Ipamorelin are preferred in advanced experimental applications requiring consistent and interpretable results. For Research Use Only. Not for Human or Animal Use. This compound is intended solely for laboratory research and analytical investigation. -
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Kisspeptin-10 is a laboratory research peptide used to study receptor signaling, peptide kinetics, and controlled endocrine pathway behavior in experimental systems. This product is supplied strictly for research use only. It is not approved or intended for human or animal use, and any discussion of biological activity refers only to preclinical or in vitro research. From a biochemical standpoint, research-grade Kisspeptin-10 is commonly supplied as a high-purity peptide, manufactured under stringent laboratory standards. To ensure experimental reliability, the peptide is often produced as an LPS-free peptide and endotoxin-free peptide, minimizing the risk of confounding inflammatory responses in sensitive research assays. Many formulations are also classified as research peptides endotoxin tested, supporting consistency and reproducibility across experimental applications. In summary, Kisspeptin-10 remains one of the most extensively studied peptides in reproductive and neuroendocrine research due to its ability to activate GnRH-dependent signaling pathways with precision and speed. Its compact molecular structure, predictable receptor interaction, and alignment with naturally occurring signaling mechanisms have established it as a preferred molecule in laboratory investigations focused on hormone regulation, puberty-related signaling, fertility pathway mapping, and neuroendocrine system research. As scientific interest in Kisspeptin biology continues to expand, Kisspeptin-10 remains a central research peptide for investigators seeking consistent, well-characterized, and biologically relevant insights into the HPG axis and its associated signaling networks. Research Use Only: Kisspeptin-10 is intended strictly for laboratory research purposes. It is not for human or animal use, and it is not intended for diagnostic, therapeutic, or clinical applications. -
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Buy KPV peptide for research use only. Every batch we supply undergoes independent HPLC purity analysis, mass spectrometry identity verification, and screening for endotoxins and heavy metals before release. Certificates of Analysis for every batch are available.Certified KPV Peptide for Research | 99%+ Purity
At Licensed Peptides™, we supply research-grade KPV made in GMP-certified facilities within the U.S. Our manufacturing team understands the requirements of laboratory and scientific research, and as such, produces each batch under strict quality control. Additionally, we independently verify each batch through accredited laboratories to confirm purity, identity, sterility, and reliability through a 6-point quality verification process. When you buy KPV peptide from Licensed Peptides, you’ll receive a compound that upholds our research-grade standards: • SPPS-Synthesized Peptides: Our KPV peptide is synthesized via solid-phase peptide synthesis (SPPS) to ensure accuracy in its sequence and maximum purity. • Lyophilized KPV Peptide for Stability: Freeze-drying helps preserve its integrity while shipping, storing, and handling in the lab. • 99%+ HPLC-Verified Purity: Third-party labs test every batch of KPV to confirm purity levels of 99%+. • Identity Confirmation Through Mass Spectrometry: We confirm the peptide’s molecular identity and composition. • Heavy-Metal & Endotoxin Screening: We test each batch for bacterial endotoxins, lipopolysaccharides (LPS), and heavy metals. Our KPV is endotoxin-free and LPS-free. • Certificates of Analysis: Every batch of KPV comes with transparent documentation that provides detailed analytical results. • USA GMP Manufacturing: Our peptides are manufactured in GMP-certified facilities in the U.S., upholding the highest standards of quality. • Same-Day Shipping: We ship any order in stock (placed before our daily cutoff) on the same day within the US. • U.S.-Based Expert Support for Researchers: We have a responsive team that understands the needs of researchers. Contact us anytime by phone at +1 (855) 322-2214 or email [email protected] with any questions.What Is KPV Peptide?
KPV is a synthetic peptide that’s made up of three amino acids: Lys-Pro-Val. These three amino acids are the C-terminal fragment (position 11-13) of the alpha-melanocyte-stimulating hormone (α-MSH), which is a naturally occurring melanocortin peptide that’s involved in the regulation of inflammation and immune responses. Researchers use the KPV peptide to study inflammatory signaling, epithelial biology, and communication pathways within the immune system.Licensed Peptides KPV Product Specifications
Peptide Class Synthetic Tripeptide Sequence Lys-Pro-Val (KPV) Quantity Choose from 1, 3, 5 & 10 Vial Options Strength 10mg Per Vial Purity 99%+ HPLC Verified Form Lyophilized Powder Manufacturing USA GMP Facility Testing Third-Party Verified Documentation Certificate of Analysis Available Storage -20°C Long-Term Application Research Use Only Important Notice
Licensed Peptides supplies KPV Peptide exclusively for research. It’s not approved for human or veterinary use. Any discussion concerning the biological activity of KPV refers to preclinical and in vitro studies only. -
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LL-37 is a 37-amino-acid antimicrobial peptide derived from the human cathelicidin precursor hCAP18. As a research peptide, it is studied for its potential roles in antimicrobial activity, immune signaling, inflammation, cell migration, and tissue repair. Its positively charged, amphipathic structure allows it to interact with biological membranes and cellular components, making it a useful subject for research in microbiology, immunology, cell biology, and peptide science. LL-37 remains an experimental research compound, and laboratory findings do not establish clinical use or safety. -
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LP2-T Overview
LP2-T is a high-purity research peptide supplied by Licensed Peptides™ as a lyophilized powder, strictly for laboratory use. It is stocked in our Metabolic Peptides range and is one of the most frequently requested compounds in the catalog, where it is used in controlled in-vitro and preclinical study designs examining receptor binding, peptide signaling and downstream assay response. Any reference to biological activity on this page relates solely to analytical and experimental work. Every batch of LP2-T is produced in a USA GMP facility using industry-standard synthesis and purification protocols, then verified by an independent laboratory before release. Each lot is analysed by HPLC to 99%+ purity, confirmed by mass spectrometry and screened for endotoxin, and the certificate of analysis for the exact lot you receive is published on this page. LP2-T is offered in 5mg through 60mg vials and in single, 3, 5 and 10 vial packs, so a study can be scaled without changing lot.Licensed Peptides’ LP2-T Product Specifications
Product Name LP2-T Peptide Class Metabolic Research Peptide Quantity Choose from 1, 3, 5, & 10 Vial Options Strength Choose from 5mg – 60mg Per Vial Options Purity 99%+ HPLC Verified Form Lyophilized Powder Manufacturing USA GMP Facility Testing Third-Party Verified Documentation Certificate of Analysis Available Storage -20°C Long-Term Application Research Use Only Storage and Handling
Lyophilized LP2-T is shipped freeze-dried for stability and is held at -20°C for long-term storage, protected from light and moisture. Once reconstituted with bacteriostatic water, LP2-T solutions are kept refrigerated at 2–8°C and used within the window supported by your protocol. Handling the vial as a lyophilized powder until the day of use is the simplest way to keep results reproducible across a study.Shipping
Vials are held in industrial-grade freezers prior to dispatch. Orders placed before 4PM PST ship the same business day, cold-packed so the peptide arrives intact and ready for reconstitution.Important Notice
We supply LP2-T for sale strictly for research purposes. It is not approved for human or veterinary use, and nothing on this page is guidance for consumption, administration or medical use. Any discussion of activity in relation to LP2-T refers solely to analytical study, whether preclinical or in vitro. -
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Licensed Peptides’ LP3-R Product Specifications
Product Name LP3-R Peptide Class Triple Receptor Agonist Quantity Choose from 1, 3, 5, & 10 Vial Options Strength Choose from 5mg – 60mg Per Vial Options Purity 99%+ HPLC Verified Form Lyophilized Powder Manufacturing USA GMP Facility Testing Third-Party Verified Documentation Certificate of Analysis Available Storage -20°C Long-Term Application Research Use Only Important Notice
We supply LP3-R for sale strictly for research purposes. It’s not approved for human or veterinary use. Any discussion of biological activity in relation to LP3-R refers solely to analytical study, whether regarding preclinical or in vitro research. -
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Licensed Peptides: MOTS-C Peptide
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- ISO-certified cleanroom manufacturing
- 99%+ verified purity through HPLC analysis
- Comprehensive batch testing and analytical verification
- Lyophilized for stability during storage and transport
- Batch-specific Certificates of Analysis available
What Is MOTS-C?
MOTS-C is a mitochondrial-encoded peptide that originates from mitochondrial DNA. Unlike many signaling molecules made from nuclear genes, MOTS-C is encoded by the mitochondrial genome.¹ MOTS-C has attracted interest because of its involvement in mitochondrial signaling and cell-to-cell communication pathways.¹² Researchers are still investigating mitochondrion-derived peptides’ roles in broader biological signaling pathways.²³Why Researchers Study MOTS-C
In a landmark study in Cell Metabolism, Lee and colleagues identified MOTS-C as a mitochondrial-derived peptide. They also reported on its role in cellular metabolic regulation. They found that it supports adaptive stress-response pathways in experimental models.¹ Later research by Kim and others showed that MOTS-C may move into the nucleus. This can happen during certain types of metabolic stress. The authors suggested that this process may support communication between mitochondria and the nucleus. It may also affect gene regulation within cells.² Current research looks at these mechanisms in lab and preclinical models. However, there are still gaps in understanding how they work in humans.³Mitochondrial Biology Research
One of the most distinctive characteristics of MOTS-C is its mitochondrial origin.¹ Mitochondrial-derived peptides may act as signals between mitochondria and the nucleus. They may help cells adapt under experimental conditions.²,³Cellular Signaling Research
Investigations have examined MOTS-C within experimental models that evaluate cellular communication systems. The published studies have explored intracellular signaling pathways and nuclear translocation mechanisms. They also examined gene-regulatory activity and molecular communication networks. These factors may influence cellular adaptation responses.²,³Current Research Limitations
Most published evidence on MOTS-C originates from laboratory and preclinical animal studies.³⁴ Large human clinical trials haven’t been published in peer-reviewed journals. These trials are still needed to confirm MOTS-C’s safety, efficacy, or therapeutic uses.³⁴ As a result, MOTS-C is a research compound exclusively for scientific investigation. Ongoing studies continue to evaluate its biological mechanisms, signaling pathways, and potential relevance within experimental research settings.³⁴References
• Lee C, Zeng J, Drew BG, Sallam T, Martin-Montalvo A, Wan J, et al. The Mitochondrial-Derived Peptide MOTS-c Promotes Metabolic Homeostasis and Reduces Obesity and Insulin Resistance. Cell Metabolism. 2015;21(3):443-454. doi:10.1016/j.cmet.2015.02.009. • Kim KH, Son JM, Benayoun BA, Lee C. The Mitochondrial-Encoded Peptide MOTS-c Translocates to the Nucleus to Regulate Nuclear Gene Expression in Response to Metabolic Stress. Cell Metabolism. 2018;28(3):516-524.e7. doi:10.1016/j.cmet.2018.06.008. • Lu H, Tang S, Xue C, et al. MOTS-c: An Equal Player in Mitochondrial Function and Aging? Frontiers in Endocrinology. 2023;14:1120533. doi:10.3389/fendo.2023.1120533. • ClinicalTrials.gov. A Study of CB4211 (MOTS-c) in Participants With Prediabetes and Overweight or Obesity (Phase 2a). Identifier: NCT07505745.Important Notice
This product is supplied strictly for research use only. It is not approved or intended for human or animal use, consumption, therapeutic use, clinical application, or diagnostic purposes. Any discussion of biological activity refers solely to laboratory, in vitro, or preclinical research. -
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Melanotan-1 (MT-1) is a synthetic peptide utilized in laboratory research to investigate melanocortin receptor activity, pigmentation pathways, and related cellular signaling mechanisms. This material is provided strictly for controlled scientific research purposes. Any references to biological systems are included solely for academic context and do not constitute therapeutic, diagnostic, or clinical claims. This product is not intended for human or animal use. Melanotan-1 supplied for research purposes is typically manufactured as a high-purity peptide, produced under controlled conditions to ensure reliability in experimental use. Research-grade MT-1 is commonly characterized as an LPS-free peptide, endotoxin-free peptide, and research peptide endotoxin tested, supporting its suitability for sensitive biochemical, cellular, and receptor-binding studies where contaminant interference must be minimized. -
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MTII (Melanotan 2) is a synthetic peptide used in laboratory research to study melanocortin receptor signaling, peptide-receptor interactions, and pigment-related pathway behavior in controlled experimental systems. This product is supplied strictly for research use only. It is not approved or intended for human or animal use, and any discussion of biological activity refers only to preclinical or in vitro research. For research integrity and reproducibility, MTII supplied for laboratory use is commonly produced as a high-purity peptide, manufactured to meet stringent analytical standards. Research-grade MTII is typically prepared as an LPS-free peptide and verified as an endotoxin-free peptide, helping minimize confounding variables in sensitive experimental assays. Additionally, research peptides are endotoxin tested to ensure consistency and reliability across in vitro and non-clinical investigative studies. This material is designated for research purposes only and is not for human or animal use. Any reference to MTII remains strictly within the context of scientific investigation and experimental analysis. MTII Melanotan 2 10mg from Licensed Peptides.