Explainers, comparisons and guides on peptide research, testing and handling.
A researcher's guide to solid-phase peptide synthesis (SPPS) — how peptides are built amino acid by amino acid, Fmoc vs. Boc strategies, and why synthesis quality determines research reliability.
Residual solvents are trace organic chemicals left in peptides after synthesis. Learn what they are, how GC headspace testing detects them, and how to read COA data.
Purity percentages dominate peptide marketing, but what does 99% purity actually measure? This guide explains HPLC purity, its limitations, and the quality metrics that matter.
A researcher's guide to peptide stability — what causes degradation, how to store lyophilized and reconstituted peptides correctly, and how to interpret stability data on a Certificate of Analysis.
Learn how to interpret every section of a Certificate of Analysis for research peptides — from HPLC purity data to mass spectrometry confirmation, endotoxin testing, and more.
HPLC measures peptide purity, while mass spectrometry confirms identity. Together they provide the minimum analytical picture needed to interpret a peptide Certificate of Analysis correctly.
Understanding COAs, HPLC reports, and what to look for in quality peptides.
Temperature, reconstitution, shelf life — a practical guide to keeping peptides stable.