Peptide Glossary

A small-molecule research compound studied as an inhibitor of the enzyme NNMT (nicotinamide N-methyltransferase). In vitro work has explored its relationship to cellular NAD+ levels and metabolic pathways.

A modified fragment of the human growth hormone molecule (the 176–191 region). Research has focused on its investigated effects on lipid metabolism without the full activity of growth hormone.

Sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth. It is the standard diluent used to reconstitute lyophilized (freeze-dried) peptides for laboratory research handling.

A synthetic peptide derived from a sequence in gastric protein, widely studied in tissue-repair research models. It is a frequent component of research blends such as WOLVERINE and GLOW.

A synthetic analog of growth-hormone-releasing hormone (GHRH). Studied for its ability to stimulate GH secretion; the "DAC" (Drug Affinity Complex) variant extends its circulating half-life.

A research combination pairing a GHRH analog (CJC-1295) with a GHRP-class secretagogue (Ipamorelin), studied for complementary effects on growth-hormone signaling pathways.

A document issued by an independent laboratory confirming the purity, identity, and quality of a specific lot of a compound. Coastal Bio Labs issues a COA for every lot before shipment.

A pyrogenic component of the outer membrane of certain bacteria. Endotoxin (LAL) testing screens research compounds for bacterial contamination — an important quality marker for sensitive in vitro work.

A synthetic tetrapeptide (Epitalon) studied in relation to the enzyme telomerase and cellular aging models. It is the subject of ongoing in vitro and animal research.

A copper-binding tripeptide (glycyl-L-histidyl-L-lysine + copper) naturally found in plasma. Extensively studied in skin, tissue-remodeling, and regenerative research contexts.

A hypothalamic hormone that stimulates the pituitary to produce and release growth hormone. Many research peptides, such as CJC-1295 and Sermorelin, are synthetic GHRH analogs.

A class of peptides that stimulate growth-hormone release through the ghrelin/secretagogue receptor, a pathway distinct from GHRH. Ipamorelin and Hexarelin are GHRP-class compounds.

An incretin hormone that regulates blood-glucose and appetite signaling. It is the target pathway for a large class of metabolic research compounds, including Semaglutide.

A compound that activates the GLP-1 receptor, mimicking the action of the natural hormone. GLP-1 agonists are a major focus of metabolic and glucose-regulation research.

A peptide hormone, co-secreted with GLP-1, that is studied for its role in intestinal growth and gut-barrier function in research models.

The time required for the concentration of a compound to fall to half its initial value. A longer half-life means a compound persists longer; modifications like "DAC" are designed to extend it.

A potent GHRP-class growth-hormone secretagogue studied for its strong stimulation of GH release through the ghrelin-receptor pathway.

An analytical technique that separates the components of a mixture to measure their relative amounts. HPLC is the standard method used to determine the purity percentage of a research peptide.

A hormone structurally similar to insulin that mediates many of the growth-promoting effects of growth hormone. The "LR3" variant is a long-acting analog used in research.

A selective GHRP-class peptide studied for stimulating growth-hormone release with minimal effect on other hormones such as cortisol or prolactin.

A peptide that acts upstream in the reproductive hormone axis, studied for its role in regulating GnRH and downstream reproductive signaling.

Freeze-dried into a stable solid powder. Most research peptides are supplied lyophilized to preserve them during storage and shipping, and are reconstituted with bacteriostatic water before use.

A synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH) studied in pigmentation and melanocortin-receptor research.

A splice variant of IGF-1 produced in response to mechanical stress in muscle tissue. It is studied in research on localized tissue repair and growth.

A mitochondrial-derived peptide studied for its role in metabolic regulation, insulin sensitivity, and cellular energy homeostasis in research models.

An analytical technique that measures the mass-to-charge ratio of molecules to confirm a compound’s molecular weight and identity. Paired with HPLC, it verifies a peptide is exactly what its label states.

A coenzyme central to cellular energy metabolism and redox reactions. NAD+ and its precursors are heavily studied in aging, metabolism, and mitochondrial research.

A short chain of amino acids linked by peptide bonds. Peptides are smaller than proteins and act as signaling molecules, hormones, and research tools across many biological pathways.

A gut-derived peptide hormone released after eating that is studied for its role in appetite regulation and satiety signaling.

A melanocortin-receptor agonist derived from Melanotan II, studied in research on sexual-response and central nervous system signaling pathways.

The proportion of a sample that is the intended target compound, expressed as a percentage and measured by HPLC. Coastal Bio Labs holds its compounds to a ≥99% purity standard.

The process of dissolving a lyophilized (freeze-dried) peptide in a diluent — typically bacteriostatic water — to prepare a solution for laboratory research handling.

Material produced and verified to a quality standard suitable for laboratory investigation — high purity, confirmed identity, and documented per-lot testing. It is supplied for in vitro research use only.

A synthetic peptide derived from the immunomodulatory peptide tuftsin, studied in research on anxiety-related and cognitive pathways.

A long-acting GLP-1 receptor agonist that is a major subject of metabolic and glucose-regulation research.

A synthetic peptide derived from a fragment of ACTH, studied in nootropic and neuroprotective research contexts.

A synthetic version of the active region of Thymosin Beta-4, studied in tissue-repair and cell-migration research. It is commonly paired with BPC-157 in research blends.

A peptide derived from the thymus gland, studied extensively for its role in modulating immune-system signaling in research models.