Reference
Peptide Glossary
A plain-language reference to the research peptides we supply and the terms you'll come across when working with them.
For laboratory research use only. The descriptions below are brief factual summaries of what each compound is and the research areas it appears in. They are not medical claims, and none of these products are for human or veterinary use.
Metabolic research
Retatrutide
A synthetic peptide studied as a triple agonist across GLP-1, GIP and glucagon receptor pathways, making it a compound of interest in current metabolic research.
MOTS-c
A mitochondrial-derived peptide encoded in mitochondrial DNA. Studied in research into metabolic regulation and mitochondrial signalling.
NAD+
Nicotinamide adenine dinucleotide, a coenzyme present in all living cells. Widely used in laboratory research into cellular energy metabolism and redox reactions.
Growth hormone axis
Tesamorelin
A synthetic analogue of growth hormone-releasing hormone (GHRH). Investigated in research contexts for its interaction with GHRH receptors.
Ipamorelin
A selective growth hormone secretagogue peptide studied for its binding at the ghrelin receptor in laboratory models.
CJC-1295 (with DAC)
A GHRH analogue incorporating a Drug Affinity Complex (DAC), which extends its half-life relative to the non-DAC form. Studied for GHRH receptor pathway research.
CJC-1295 (no DAC)
Also known as Modified GRF (1-29). A GHRH analogue without the DAC modification, giving it a considerably shorter half-life than the DAC version.
GHRP-6
A growth hormone-releasing hexapeptide studied for its activity at the ghrelin receptor in laboratory research.
Peptides
BPC-157
A synthetic pentadecapeptide sequence derived from a protein found in gastric juice. Studied in laboratory models for its role in tissue repair and angiogenesis signalling.
TB-500 (Thymosin Beta-4)
A synthetic fragment related to thymosin beta-4, a naturally occurring actin-binding protein. Investigated in research settings for cell migration and tissue remodelling pathways.
GHK-Cu
A copper-binding tripeptide (glycyl-L-histidyl-L-lysine) complexed with copper. Studied for its interactions with extracellular matrix proteins and collagen signalling.
KPV
A tripeptide fragment (lysine-proline-valine) derived from the C-terminal of alpha-MSH. Examined in laboratory research into inflammatory signalling pathways.
Epithalon
A synthetic tetrapeptide (Ala-Glu-Asp-Gly). Studied in laboratory research relating to telomerase activity and cellular ageing models.
Neuropeptides
Semax
A synthetic peptide derived from a fragment of adrenocorticotropic hormone (ACTH). Investigated in neurological research models.
Selank
A synthetic heptapeptide based on the endogenous peptide tuftsin. Studied in laboratory research into neuropeptide signalling.
Kisspeptin
A peptide encoded by the KISS1 gene, acting on the KISS1 receptor. Studied in reproductive endocrinology research.
PT-141 (Bremelanotide)
A synthetic peptide analogue of alpha-MSH, studied for activity at melanocortin receptors in laboratory research.
Melanotan II
A synthetic analogue of alpha-melanocyte-stimulating hormone (alpha-MSH). Studied for its interaction with melanocortin receptor pathways.
Terms you'll come across
Lyophilised
Freeze-dried. Peptides are supplied as a lyophilised powder because it is considerably more stable in transport and long-term storage than a solution.
Reconstitution
The process of dissolving a lyophilised peptide in a suitable solvent to produce a solution for laboratory work.
Bacteriostatic water
Sterile water containing a small amount of benzyl alcohol, which inhibits bacterial growth. Commonly used as a reconstitution solvent.
Concentration (mg/ml)
The mass of peptide divided by the volume of solvent it is dissolved in. Our concentration calculator works this out for you.
Certificate of Analysis (COA)
Documentation reporting the analytical testing carried out on a batch, including its purity.
Purity
The proportion of the material that is the target peptide, usually determined by HPLC and expressed as a percentage.
Half-life
The time taken for half of a compound to be eliminated or degraded under given conditions. Often used to compare analogues such as CJC-1295 with and without DAC.
Agonist
A compound that binds a receptor and activates it, producing a response. A triple agonist acts at three receptor types.
Analogue
A compound structurally similar to another, often modified to alter stability, receptor selectivity or half-life.
Freeze-thaw cycle
One round of freezing and thawing. Repeated cycles gradually degrade peptide stability and are best minimised.
Working with peptides
See our guides on preparing and storing research peptides correctly.
Storage & ReconstitutionConcentration Calculator