Plain-language definitions for the terms that come up across the catalog, calculator, and research guides — from reconstitution and GRAVY to GLP-1, GHRH, and Certificates of Analysis. 46 terms across 5 categories.
Sterile water with benzyl alcohol that inhibits bacterial growth in multi-use vials.
The fraction of a dose that reaches circulation intact.
Amount of peptide per unit volume of reconstituted solution.
The time for a peptide’s circulating concentration to fall by half.
Freeze-drying a peptide into a stable powder for storage.
Dissolving a freeze-dried peptide in a sterile diluent to a known concentration.
Administration into the fat layer beneath the skin.
Attaching a fatty-acid chain to extend half-life via albumin binding.
The building-block molecules of peptides and proteins.
The free-carboxyl end of a peptide chain.
The unit of molecular mass.
A covalent bond between two cysteine residues that stabilizes structure.
Grand Average of Hydropathy — a sequence’s mean hydrophobicity.
How water-attracting or water-repelling an amino acid is.
The mass of a molecule, expressed in daltons.
The free-amino end of a peptide chain.
A short chain of amino acids linked by peptide bonds.
The amide bond linking one amino acid to the next.
A single amino acid unit within a peptide chain.
The ordered list of amino acids in a peptide.
A molecule that binds and activates a receptor.
The formation of new blood vessels from existing ones.
Brain-derived neurotrophic factor, a target of cognition research.
An inner-mitochondrial-membrane lipid essential for energy production.
The enzyme that rapidly degrades incretins like GLP-1.
Growth hormone-releasing hormone — the hypothalamic GH signal.
Growth hormone-releasing peptides acting on the ghrelin receptor.
Glucose-dependent insulinotropic polypeptide, a second incretin.
Glucagon-like peptide-1, an incretin targeted for diabetes and weight loss.
The hypothalamic-pituitary-gonadal hormone feedback system.
Insulin-like growth factor 1, the downstream mediator of GH.
Gut hormones that boost insulin release after eating.
The master upstream regulator of the reproductive hormone axis.
A receptor/peptide family regulating pigmentation, energy, and sexual function.
A coenzyme central to energy metabolism that declines with age.
A substance that triggers secretion of a hormone.
An agent that clears senescent “zombie” cells.
A unique registry identifier for a chemical substance.
A supplier document reporting a compound’s identity and purity.
The count of each atom type in a molecule.
A unique compound identifier in NIH’s PubChem database.
A reference database of protein sequence and function.
Research use only. Definitions are educational references, not medical advice or dosing guidance. Independent validation required for any experimental use.
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