Research Peptide Terminology Glossary
This glossary explains common terms used on research-peptide product pages and documentation. It is meant to make catalog review and recordkeeping easier. Definitions are general and informational, not usage guidance. The terms are grouped so that related ideas sit together, and each definition is written to stand on its own. Skim the glossary once to get oriented, then keep it open as a quick reference while you browse the catalog and read product documentation; the more detailed guides linked throughout expand on any term you want to explore further.
How to use this glossary
Research-product pages and documentation use a fair amount of specialized vocabulary, and a few unfamiliar words can make an otherwise simple listing feel opaque. The definitions below are grouped by theme — molecule basics, form and packaging, quality and documentation, and ordering and handling — so related terms sit together. Each definition is general and informational; none of it is usage guidance. Read it as a reference to keep open while reviewing a product, not as instructions.
Molecule and chemistry terms
Amino acid — a small molecule that serves as a building block of peptides and proteins; around twenty are commonly referenced.
Peptide bond — the chemical link that joins two amino acids, formed as a water molecule is released.
Peptide — a short chain of amino acids joined by peptide bonds.
Protein — a longer amino-acid chain that folds into a more complex three-dimensional structure.
Sequence — the order of amino acids in a chain, which defines a given peptide or protein.
Molecular weight — the mass of a molecule, used in identity testing to compare a material against its expected value.
Form and packaging terms
Lyophilized — freeze-dried into a dry powder, which makes a material more stable for storage and shipping.
Vial — the small sealed container a research material is supplied in.
Diluent — a liquid used in research to dilute a material.
Bacteriostatic water — sterile water with a small amount of preservative (commonly benzyl alcohol) that inhibits bacterial growth, used as a laboratory diluent.
Sterile water — water that has been sterilized and contains no preservative.
Quality and documentation terms
Certificate of Analysis (COA) — a document summarizing the testing performed on a specific lot of a material.
Lot — a specific production batch that documentation refers to.
HPLC — High-Performance Liquid Chromatography, an analytical method used to assess purity by separating a sample's components.
Mass spectrometry — a method used to help confirm identity by measuring molecular weight.
Purity — how much of a sample is the intended component versus other components.
Identity — whether a material is the molecule it is intended to be, as opposed to how pure it is.
Ordering, labelling, and handling terms
Research use only — intended for laboratory and research use, not for human or animal use.
Milligram (mg) — a unit of mass; on a label it indicates the amount of material in the vial.
Kit — a product offered as multiple vials together, rather than a single vial.
Storage reference — a general handling note, such as keeping material cold, dry, sealed, and protected from light.
Tracking number — a code, sent once an order ships, used to follow a delivery to its destination.
Why these terms work together
The value of a glossary is not just in individual definitions but in seeing how the terms connect. A peptide is built from amino acids in a sequence; it is supplied lyophilized in a vial; its identity and purity are described on a COA for a specific lot; and it is ordered as a research-use-only material measured in milligrams. Read in that order, the vocabulary tells the whole story of a product from chemistry to checkout.
If a term you encounter is not listed here, the more detailed Research Hub guides — on research peptides, certificates of analysis, product labels, and storage — define and expand on each of these ideas. This glossary is the quick reference; those articles are the deeper explanations.
Terms you will see at checkout and after ordering
A few terms appear during ordering rather than on a product page, and they are worth defining here too. Order number — a unique reference assigned to your order, used to track it and in any support contact. Pending — the status of an order that is reserved while payment is completed. Payment confirmation — the step where you confirm you have sent payment so the order can be reviewed. Free-shipping threshold — the order amount, $299.99 CAD, at or above which priority shipping is complimentary.
These ordering terms connect the product vocabulary to the buying experience. Once both sets of terms are familiar — the molecule and documentation words on this page, and the ordering words here — the whole journey from catalog to delivery reads clearly. The ordering and payment guides in the Research Hub expand on each of these steps.
Frequently Asked Questions
What does lyophilized mean?
Freeze-dried - water has been removed under vacuum to leave a dry, more stable powder.
What is a COA?
A Certificate of Analysis: a document that summarizes the testing performed on a specific lot of a material.
What is the difference between purity and identity?
Purity is how much of a sample is the intended component; identity is whether the material is the molecule it is supposed to be. Different methods address each.
What does "mg" mean on a label?
Milligram, a unit of mass. On a label it indicates the amount of material in the vial.
What does "research use only" mean?
It indicates a material is for laboratory and research use only, not for human or animal use.
Related Reading
Research Use Notice
All products referenced on this website are intended strictly for laboratory and research use only. They are not for human or animal use, and nothing on this page is medical, dosing, or legal advice.