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Research compounds

Research compound catalogue

Browse the research peptides we supply, all at 99% purity (HPLC) and available to order for laboratory research. Open any compound for technical information, research background and documentation.

Compound directory

29 compounds shown

BPC-157 research peptide vial, Positive Peptides, 99% purityTissue Repair Research99% purity

BPC-157

Synthetic pentadecapeptide (gastric-juice-derived sequence)

A 15-amino-acid synthetic peptide derived from a protective protein sequence found in human gastric juice. It is one of the most frequently studied peptides in preclinical tissue-repair research, with the overwhelming majority of data coming from rodent models.

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GHK-Cu research peptide vial, Positive Peptides, 99% purityTissue Repair Research99% purity

GHK-Cu

Tripeptide–copper(II) complex

A naturally occurring tripeptide (Gly-His-Lys) that binds copper(II) with high affinity. It is studied in dermal remodelling, collagen synthesis and gene-expression research, and is widely used as an ingredient in cosmetic formulations.

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NAD⁺ research peptide vial, Positive Peptides, 99% purityCellular & Ageing Research99% purity

NAD⁺

Pyridine nucleotide coenzyme

A ubiquitous coenzyme central to redox metabolism and a substrate for sirtuins, PARPs and CD38. A major focus of ageing and metabolism research because cellular NAD⁺ levels decline with age in many tissues.

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RT Tri-Agonist research peptide vial, Positive Peptides, 99% purityMetabolic Research99% purity

RT Tri-Agonist

Triple GIP/GLP-1/glucagon receptor agonist (investigational peptide)

An investigational single-molecule agonist of the GIP, GLP-1 and glucagon receptors, currently in late-stage clinical development. Not an approved medicine anywhere as of this profile.

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Semaglutide research peptide vial, Positive Peptides, 99% purityMetabolic Research99% purity

Semaglutide

Acylated GLP-1 receptor agonist (31-amino-acid analogue)

A long-acting glucagon-like peptide-1 (GLP-1) receptor agonist. In its licensed pharmaceutical forms it is an approved medicine; as a research compound it is used to study incretin signalling, appetite regulation and glucose homeostasis.

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Thymosin Beta-4 (TB-500) research peptide vial, Positive Peptides, 99% purityTissue Repair Research99% purity

Thymosin Beta-4 (TB-500)

Naturally occurring 43-amino-acid actin-sequestering peptide (synthetic form)

A 43-amino-acid peptide present in most mammalian cells, where it is the principal sequestering protein for monomeric actin. Synthetic thymosin β4 and its fragments are widely used in cell-migration, cardiac and dermal wound-healing research.

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Tirzepatide research peptide vial, Positive Peptides, 99% purityMetabolic Research99% purity

Tirzepatide

Dual GIP/GLP-1 receptor agonist (39-amino-acid acylated peptide)

A single-molecule dual agonist of the glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 receptors. Licensed as a medicine in several jurisdictions; used in research to study multi-receptor incretin pharmacology.

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AOD-9604 research peptide vial, Positive Peptides, 99% purityMetabolic Research99% purity

AOD-9604

Synthetic 16-amino-acid fragment of human growth hormone (C-terminal, disulfide-bridged)

A modified C-terminal fragment of human growth hormone, investigated in the 1990s–2000s for lipolytic activity without the growth-promoting effects of the full hormone. Clinical development was discontinued.

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DSIP research peptide vial, Positive Peptides, 99% purityNeuroscience Research99% purity

DSIP

Naturally occurring nonapeptide (synthetic form)

A nonapeptide first isolated from rabbit cerebral venous blood in the 1970s on the basis of sleep-inducing activity. Its physiological role remains unresolved.

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Epithalon research peptide vial, Positive Peptides, 99% purityCellular & Ageing Research99% purity

Epithalon

Synthetic tetrapeptide

A synthetic tetrapeptide developed in Russia, studied in cell culture for effects on telomerase expression and in animal models of ageing. The evidence base is largely from a single research institute.

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GHRP-6 research peptide vial, Positive Peptides, 99% purityGrowth Hormone Axis Research99% purity

GHRP-6

Synthetic hexapeptide growth-hormone secretagogue

One of the first synthetic growth-hormone-releasing peptides, developed from met-enkephalin analogues. Its discovery led to the identification of the ghrelin receptor.

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Ipamorelin research peptide vial, Positive Peptides, 99% purityGrowth Hormone Axis Research99% purity

Ipamorelin

Pentapeptide growth-hormone secretagogue (ghrelin receptor agonist)

A synthetic pentapeptide agonist of the growth-hormone secretagogue receptor (GHS-R1a). Described in its original publication as selective for GH release with little effect on ACTH or cortisol.

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Kisspeptin-10 research peptide vial, Positive Peptides, 99% purityNeuroscience Research99% purity

Kisspeptin-10

C-terminal decapeptide of kisspeptin (KISS1 gene product)

The minimal active fragment of kisspeptin, the KISS1R (GPR54) ligand that is a master regulator of GnRH release. Widely used in reproductive-neuroendocrinology research.

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LL-37 research peptide vial, Positive Peptides, 99% purityImmune & Antimicrobial Research99% purity

LL-37

Human cathelicidin-derived 37-amino-acid antimicrobial peptide

The only human cathelicidin, released from the precursor hCAP18. A model host-defence peptide with broad antimicrobial and immunomodulatory activity studied across microbiology and immunology.

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Melanotan II research peptide vial, Positive Peptides, 99% purityMelanocortin Research99% purity

Melanotan II

Cyclic heptapeptide melanocortin receptor agonist (non-selective)

A cyclic analogue of α-MSH developed at the University of Arizona as a potent, non-selective melanocortin receptor agonist. Studied in pigmentation and sexual-function physiology; never approved as a medicine.

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Oxytocin research peptide vial, Positive Peptides, 99% purityNeuroscience Research99% purity

Oxytocin

Cyclic nonapeptide hormone (synthetic form)

A hypothalamic nonapeptide hormone and a licensed medicine in obstetrics. Research interest extends to social behaviour, stress physiology and receptor pharmacology.

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PT-141 (Bremelanotide) research peptide vial, Positive Peptides, 99% purityMelanocortin Research99% purity

PT-141 (Bremelanotide)

Cyclic heptapeptide melanocortin receptor agonist (MC4R-preferring)

A metabolite/analogue of Melanotan II that differs by a C-terminal carboxylic acid. Licensed in the United States as a medicine for a specific indication; used in research as an MC4R-preferring reference agonist.

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Selank research peptide vial, Positive Peptides, 99% purityNeuroscience Research99% purity

Selank

Synthetic heptapeptide (tuftsin analogue)

A synthetic analogue of the immunomodulatory tetrapeptide tuftsin, extended with a Pro-Gly-Pro tail for stability. Developed in Russia and studied in anxiety and cognition models.

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Semax research peptide vial, Positive Peptides, 99% purityNeuroscience Research99% purity

Semax

Synthetic heptapeptide (ACTH fragment analogue)

A synthetic analogue of the ACTH(4-10) fragment, developed in Russia and studied in models of cognition, stroke and neuroprotection.

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Tesamorelin research peptide vial, Positive Peptides, 99% purityGrowth Hormone Axis Research99% purity

Tesamorelin

Synthetic GHRH(1-44) analogue (trans-3-hexenoyl modified)

A stabilised analogue of growth-hormone-releasing hormone (GHRH). Licensed in some jurisdictions for a specific indication; used in research to study the hypothalamic–pituitary GH axis.

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Thymosin Alpha-1 research peptide vial, Positive Peptides, 99% purityImmune & Antimicrobial Research99% purity

Thymosin Alpha-1

Naturally occurring 28-amino-acid acetylated peptide (synthetic form)

A thymic peptide studied for immunomodulatory activity. Its synthetic form, thymalfasin, is licensed in a number of countries (not the UK or US) as an adjunct in hepatitis B and other indications.

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For laboratory research only. All compounds described on this website are supplied strictly for in-vitro laboratory research. They are not for human or veterinary use, and no medical or therapeutic claims are made. Researchers remain responsible for complying with the rules that apply to them.

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