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Research peptides, explained plainly.
Guides to research peptides as laboratory materials: what they are, how they are made, tested and stored.
Search guides, compounds and termsSearch the library /Where to start
The guides everything else builds on.
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What Are Peptides?
Chains of amino acids, and how research peptides are made.
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Evidence Levels in Peptide Research
Cell work, animal work and clinical trials: what each can and cannot show, and how to read an abstract critically.
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Certificate of Analysis Guide
Every field on a certificate of analysis, how to tell a batch document from a generic one, and what a certificate cannot prove.
Every guide, by topic
16 guides on research peptides as laboratory materials. None gives dosing information or guidance on use in people or animals.
Fundamentals
What peptides are, how they are named and how they are grouped.
- What Are Peptides? Chains of amino acids, and how research peptides are made.4 min
- Peptide vs Protein vs Amino Acid Three words for one family of molecules, by length.4 min
- Why Peptide Prices Vary Length, difficulty, purification and scale.5 min
- Peptide Classification How research peptides are grouped by origin, structure, size and receptor family, and what each grouping is useful for.12 min
Chemistry
How a peptide is built, modified and how it breaks down.
- Solid-Phase Peptide Synthesis How a peptide is built one residue at a time on a resin, and where deletion sequences, epimers and other impurities come from.12 min
- Peptide Stability and Degradation The chemical and physical routes by which peptides degrade, the conditions that drive them, and why the dry state is slower.12 min
Testing
Certificates, chromatograms and what a purity figure measures.
- How to Verify a Peptide Reading an HPLC trace and a mass spectrum.4 min
- What Does 99% Purity Mean? What a purity figure measures, and what it leaves out.4 min
- Analytical Methods for Peptides What HPLC, mass spectrometry, amino acid analysis, water, counter-ion, endotoxin and sterility tests each answer, and what they cannot.12 min
- Certificate of Analysis Guide Every field on a certificate of analysis, how to tell a batch document from a generic one, and what a certificate cannot prove.12 min
Handling
Storage, shipping, solvents and the arithmetic of a solution.
- Why Peptides Are Lyophilized What freeze-drying is and why water is the problem.4 min
- Peptide Storage Guide Temperature, light and moisture, before and after opening.3 min
- Shipping and Cold Weather What cold does and does not do to a shipment.4 min
- Reconstitution Concepts The laboratory chemistry of dissolving a freeze-dried peptide: solubility, solvents, concentration, mixing and surfaces.12 min
- Peptide Units and Concentration Milligrams, moles, molarity and international units, and the arithmetic of making and diluting a peptide stock solution.11 min
Evidence
How to weigh cell, animal and human studies.
Research Library
What the literature says, compound by compound.
Each page reports what was studied, in which model, and how strong the evidence is, with every source linked.
Tools for the bench
Laboratory arithmetic, and quicker ways around the catalogue and the library.
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Compound Explorer
Search every compound in the catalogue by class, research area and format.
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Laboratory Calculators
Concentration, molarity, dilution and unit conversion for solutions on the bench.
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Compare Compounds
Put two or three compounds side by side: class, size, formats and literature.
Looking for the catalogue?
Everything here is background reading. The products are in the shop, sold for laboratory research use only.