Plain-English definitions of the terms you will meet across the research literature and our guides. Every entry is framed for laboratory and educational research only, not for human or veterinary use. Nothing here describes dosing, protocols, or administration.
A short chain of amino acids joined by peptide bonds. Peptides are smaller than proteins and are studied as research compounds in the laboratory only, not for human or veterinary use.
The building block of peptides and proteins. The order in which amino acids are linked defines a peptide and gives it the properties researchers study in vitro.
The specific order of amino acids in a peptide, usually written as a string of letter codes. The sequence is the identity of the molecule and determines how it behaves in an assay.
A molecule whose sequence or structure is changed from a reference compound. Researchers compare analogs to understand how small structural edits shift behavior in laboratory study.
The mass of one molecule, reported in daltons. It is one of the basic identity values listed for a research compound alongside its sequence.
Freeze dried into a dry powder. Many research peptides ship lyophilized because the dry form is more stable for storage and shipping than a solution.
A protein that recognizes a specific molecule and triggers a response inside a cell. Receptors are common targets in peptide research.
A molecule that binds a receptor and activates it, mimicking the receptor's natural signal. Studied in cell and tissue models to map how a receptor responds.
Glucagon-like peptide 1, a signaling peptide whose receptor is widely studied in metabolic research. Referenced here only as a research target, with no therapeutic claim.
Glucose-dependent insulinotropic polypeptide, another incretin signaling peptide studied for how it activates its own receptor in laboratory models.
A receptor studied in metabolic research. Some research compounds are characterized by how they engage this receptor among others.
A research compound designed to activate one receptor target. Used to isolate the behavior of a single signaling pathway in study.
A research compound characterized as activating two receptor targets. Studied to compare combined receptor engagement against single-target compounds.
A research compound characterized as engaging three receptor targets. A subject of investigation into multi-receptor signaling in laboratory models.
A molecule studied for its ability to prompt a cell to release a substance, such as a hormone, in laboratory models. Used as a research descriptor only.
A signaling molecule studied for its role in cell growth and division in culture. A broad category of research interest, examined in vitro.
Insulin-like growth factor 1, a growth-factor peptide studied in cell and tissue models. Listed here strictly as a research subject.
A short peptide bound to a copper ion, studied in laboratory and cosmetic-science research. Referenced only as a research compound.
A family of small peptides studied for their roles in cellular structure and signaling in research models. A descriptor of a research line, not a use claim.
A peptide associated with mitochondria, the energy-producing structures in cells. Studied in basic research into cellular energy pathways.
A label meaning a material is supplied for laboratory and educational research only. It is not for human or veterinary use, diagnosis, or treatment.
The laboratory step of dissolving a lyophilized powder in a suitable liquid to prepare a solution for study. A general bench term, with no protocol given here.
Sterile water containing a preservative that limits bacterial growth, used in laboratory settings to prepare and store research solutions.
A measured portion divided out from a larger sample. Researchers split a stock into aliquots so each can be used without disturbing the rest.
The cycle of freezing a sample and warming it back to liquid. Repeated freeze-thaw cycles can affect a research compound, so they are tracked in study notes.
The time it takes for half of a substance to break down or clear in a given system. A measurement reported in research, not a guide to use.
Latin for in glass. Research carried out in a controlled environment outside a living organism, such as in a dish or test tube.
Latin for in the living. Research carried out within a whole living organism in a laboratory study setting.
A laboratory test that measures the presence, amount, or activity of a substance. Assays are how researchers gather data on a compound.
A measure of how much of a sample is the intended compound, reported as a percentage. High-performance liquid chromatography separates the parts of a sample so purity can be measured.
Mass spectrometry, a technique that weighs molecules to confirm a compound's identity. Often paired with purity testing to verify what is in a sample.
A single production run of a material. Test results apply to one batch, since results can differ between runs.
How well a compound holds its identity and purity over time under given conditions. A research property reported and tracked, not a usage instruction.
How readily a compound dissolves in a given liquid. A basic physical property researchers note when planning in vitro work.