Research Peptides
This is the whole Licensed Peptides catalogue in one grid: single-compound vials, pre-mixed blends, oral capsules and pre-reconstituted 30ml atomized solutions, from BPC-157 and TB-500 to LP2-T, LP3-R and the Wolverine and Klow blends. Use the category links in the menu to narrow by research area, or sort this page by name or price.
Every peptide listed is manufactured in a GMP-certified facility in the United States, independently verified at 99%+ purity by high-performance liquid chromatography, identity-confirmed by mass spectrometry, and screened for endotoxins and heavy metals before release. The Certificate of Analysis for each batch is published in our testing library, so you can check the lot before you order. Orders ship cold from the U.S. Products sold here are supplied to researchers for laboratory and analytical use only, and are not intended for human or animal use.
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Thymosin Alpha-1 5mg is a laboratory research peptide modeled after a naturally occurring thymic fraction and used to study immune-related signaling pathways in controlled experimental systems. Originally isolated from thymus tissue, it is widely used in research to examine T-cell maturation, cytokine behavior, antigen-presentation mechanisms, and receptor-level interactions. 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. Over the past several decades, Tα1 has been utilized extensively in in-vitro studies and experimental models designed to explore the molecular dynamics of immune regulation. Research teams often employ this peptide to observe changes in cytokine behavior, examine antigen-presentation mechanisms, characterize receptor-level interactions, and assess how immune pathways adapt under conditions of induced stress. These investigations are conducted strictly in research settings and have contributed valuable insights into immune modulation, intracellular communication, and molecular defense organization. Thymosin Alpha-1 5mg supplied for research purposes is manufactured as a high-purity peptide, suitable for laboratory experimentation requiring stringent quality parameters. The material is produced as an LPS-free peptide and an endotoxin-free peptide, helping to reduce confounding variables in immune and cellular signaling studies. All research peptides are endotoxin tested to ensure consistency, reliability, and reproducibility across experimental applications. It is essential to emphasize that Thymosin Alpha-1 is not approved, marketed, or intended for human or animal use. Its role is strictly limited to scientific research and controlled laboratory experimentation. No claims are made regarding therapeutic outcomes, physiological enhancement, or direct biological benefit outside of research observations. Any reference to outcomes pertains solely to experimental models, laboratory systems, or research subjects under controlled study conditions. -
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TB-500 (Thymosin Beta-4) 10mg is a laboratory research peptide used to study actin-related signaling, cellular migration, and experimental pathway responses in controlled 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 TB-500 supplied for research applications is manufactured as a high purity, LPS-free peptide and is classified as an endotoxin-free peptide, ensuring minimal interference in sensitive experimental systems. Each batch is produced under stringent quality controls and is research peptides endotoxin tested, supporting reproducibility and reliability in in-vitro and preclinical study designs. This material is intended strictly for laboratory research and scientific investigation only. TB-500 is not intended for human or animal use, and no information herein should be interpreted as relating to therapeutic application, clinical outcomes, or direct biological benefit outside of controlled research settings. -
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SS-31 is a laboratory research peptide used to study mitochondrial membrane interactions, cardiolipin binding, and cellular signaling pathways 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. One of the unique aspects of SS-31 is its specific affinity for cardiolipin, a phospholipid located within the inner mitochondrial membrane that is essential for maintaining electron transport chain structure and membrane integrity. Disturbances in cardiolipin stability are commonly examined in research involving oxidative stress, mitochondrial dysfunction, and bioenergetic decline. SS-31’s ability to interact with cardiolipin has therefore made it a recurring subject in studies investigating how mitochondrial membrane condition affects broader cellular behavior. Additionally, research has documented that SS-31 may influence the production of reactive oxygen species (ROS) at the mitochondrial level. Excessive ROS production is commonly evaluated in studies on cellular stress, inflammation, and mitochondrial impairment. By focusing on mitochondria directly, rather than acting as a broad-spectrum antioxidant, SS-31 offers researchers a pathway to study targeted mechanisms of oxidative modulation rather than systemic antioxidant activity. For laboratory use, SS-31 is commonly supplied as a high-purity, LPS-free peptide, manufactured to meet strict research standards. As an endotoxin-free peptide, it is frequently utilized in sensitive in vitro and ex vivo experimental setups where contamination control is critical. Research peptides such as SS-31 are typically endotoxin tested to support reproducibility and reliability across mitochondrial and cellular research applications. This compound is intended strictly for research use only and is not approved for human or animal use. -
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SNAP-8 is generally identified in cosmetic ingredient terminology as acetyl octapeptide-3.The name reflects its structure: “acetyl” refers to the attached acetyl group, while “octapeptide” indicates that the peptide contains eight amino acids. It is sometimes described in consumer products as an “acetyl hexapeptide serum,” but this terminology can lead to confusion with Argireline, which is commonly associated with acetyl hexapeptide-8 and, in some older ingredient references, acetyl hexapeptide-3. Although SNAP-8 and Argireline are both cosmetic peptides often discussed for their wrinkle-related applications, they are different ingredients and should not be considered interchangeable. -
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Sermorelin is a laboratory research peptide used to study GHRH receptor signaling, pituitary response behavior, and downstream endocrine pathway activity 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 consistency and data integrity, sermorelin used in laboratory settings is commonly produced as a high-purity peptide and manufactured under stringent quality controls. Research-grade formulations are frequently described as LPS-free peptides and endotoxin-free peptides, helping minimize confounding variables related to immune activation in experimental systems. Additionally, research peptides endotoxin tested are often preferred in controlled studies to support reproducibility and reliability of collected data. Sermorelin is intended strictly for research purposes only. It is not for human or animal use, and any references herein relate exclusively to findings observed in experimental, laboratory, or research subject models. -
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PT-141 Atomized Solution 30ml 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. This product is not a nasal spray and is not manufactured, labeled, or offered for nasal or other human administration. It is not intended for ingestion, inhalation, injection, topical application, or introduction into the human or animal body by any route. This formulation is manufactured as a High Purity, LPS-free peptide, supporting research environments that require minimized interference from bacterial contaminants. As an Endotoxin-free peptide, PT-141 is suitable for sensitive in-vitro and analytical studies where endotoxin presence could compromise experimental integrity. Additionally, all batches are research peptides endotoxin tested, ensuring quality control standards aligned with rigorous laboratory research requirements. This product is intended strictly for research and laboratory use only. Not for human or animal use. -
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PT-141, scientifically referred to as Bremelanotide, is a synthetic peptide developed through extensive structural modification of the naturally occurring alpha-melanocyte-stimulating hormone (α-MSH). This peptide has gained considerable interest within laboratory environments due to its interaction with melanocortin receptors, most notably MC1R, MC3R, and MC4R. These receptors play essential roles in neuroendocrine regulation, melanocortin pathway mapping, immunomodulatory activity, and behavioral response modulation within controlled studies. This PT-141 10mg lyophilized peptide format is commonly selected in laboratory settings due to its stability, purity potential, and compatibility with precise experimental design. Through the use of advanced manufacturing and purification protocols, research-grade PT-141 enables controlled observations essential for neurochemical, behavioral, and receptor-specific investigations. This formulation is manufactured as a High Purity, LPS-free peptide, supporting research environments that require minimized interference from bacterial contaminants. As an Endotoxin-free peptide, PT-141 is suitable for sensitive in-vitro and analytical studies where endotoxin presence could compromise experimental integrity. Additionally, all batches are research peptides endotoxin tested, ensuring quality control standards aligned with rigorous laboratory research requirements. This product is intended strictly for research and laboratory use only. Not for human or animal use. -
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Oxytocin 10mg is a laboratory research peptide used to study receptor signaling, neuropeptide behavior, and controlled pathway responses 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. Oxytocin 10 mg is supplied as a high-purity, research-grade peptide formulated to meet the stringent requirements of laboratory investigation. This material is produced as an LPS-free peptide, endotoxin-free, and classified among research peptides that are endotoxin tested, ensuring suitability for sensitive experimental applications. The formulation supports precise and reproducible outcomes in cellular assays, molecular analysis, receptor-binding studies, and controlled experimental modeling. This product is strictly intended for research and laboratory use only. It is not for human or animal use, and it is not designed, labeled, or intended to diagnose, treat, cure, or prevent any condition. All references to oxytocin herein relate solely to findings observed in experimental research settings and controlled scientific studies. -
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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. -
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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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60 Capsules Capsule form for precise research. MK-677 Capsules 12.5mg are 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 therapy. -
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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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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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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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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.