Basics
What a peptide is
A peptide is a short chain of amino acids linked by amide bonds. The convention is loose but useful: up to about 20 residues is a…
Technical reference
Knowledge Centre
Peptide chemistry, purity, analytical interpretation, stability and formulation.
Technical notes from our process and QC teams — how peptides are made, how the numbers on a COA are produced, and what actually matters when you specify a grade.
7 entries
Basics
Synthesis
Synthesis
Synthesis routes compared
Solid-phase peptide synthesis (SPPS) builds the chain on an insoluble resin, washing away reagents between couplings. It is the standard route for cosmetic and research…
Analytics
Analytics
Reading an HPLC chromatogram
Reversed-phase HPLC separates peptides by hydrophobicity. The main peak is your product; everything else is either an impurity or an artefact of the method.
Analytics
98 % versus 99 %
The last two percent is the expensive part, because the impurities that remain are structurally similar to the product. Going from 95 % to 98 %…
Stability
Stability
Stability & storage
Most peptide degradation is hydrolysis, oxidation or aggregation, and all three are accelerated by water and heat. Store lyophilised powder dry and cold, typically 2–8 °C…
Formulation
Formulation
Formulation compatibility
Keep the peptide below its isoelectric point in aqueous systems where possible; solubility is usually better away from the pI. Avoid strong oxidisers and reducing agents…
FAQ
FAQ
Frequently asked questions
No. Price depends on sequence, purity target, scale and documentation, so a list price would be misleading. Send the specification and you get a written quotation.