Understanding Peptide and Lab Terminology

Plain-English definitions of common terms you’ll see on our product pages and lab reports.

The building blocks of peptides and proteins. There are 20 standard amino acids, and their order determines a peptide’s structure.

A unique code identifying a production run. It links your vial to its specific Certificate of Analysis.

Sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth. Commonly used in labs to dissolve lyophilized compounds.

A lab report confirming a batch’s identity and purity, usually issued by an independent third-party lab.

A testing method that separates a sample into its components to measure purity. Results are shown as a percentage.

Freeze-dried. Water is removed under low temperature and pressure, leaving a stable powder that stores much longer than liquid.

A test that measures molecular weight to confirm a compound is what it claims to be (identity testing).

One-thousandth of a gram. The standard unit for listing the amount of peptide in a vial.

A short chain of amino acids linked by peptide bonds, typically 2 to 50 amino acids long. Longer chains are generally called proteins.

The chemical bond that links one amino acid to the next.

The percentage of a sample that is the target compound. Research-grade peptides are commonly 98% or higher.

Dissolving a lyophilized powder back into liquid form using a solvent such as bacteriostatic water.

A designation meaning a product is intended solely for laboratory research and not for human or veterinary use.

The specific order of amino acids in a peptide. Even one change creates a different compound.

How well a compound keeps its structure and purity over time. Affected by temperature, light, and moisture.

All products are for laboratory research use only. Not for human or veterinary use.