Peptide raw material glossary
Short, self-contained definitions written for formulators and sourcing teams. Every term links to a dedicated page with the full definition.
chemistry
- Counterion — A counterion is the charged species that pairs with a peptide to form a neutral salt.
- TFA salt vs acetate salt — TFA salt and acetate salt are the two most common peptide salt forms.
analysis
- Peptide content vs purity — Peptide content and purity are two different measurements.
manufacturing
- Lyophilization — Lyophilization is freeze-drying: water is removed from the frozen peptide solution under vacuum.
- SPPS — SPPS (solid-phase peptide synthesis) is the standard manufacturing method for therapeutic and cosmetic peptides.
quality
- Certificate of Analysis (COA) — A certificate of analysis (COA) is the batch-specific document listing the test methods and results for one production lot.
- HPLC purity — HPLC purity is the purity value measured by high-performance liquid chromatography.
regulatory
- INCI name — An INCI name is the standard ingredient name used on cosmetic product labels.
commerce
- MOQ — MOQ (minimum order quantity) is the smallest quantity a supplier accepts for one order.
- Custom peptide synthesis — Custom peptide synthesis is a contract service where a manufacturer produces a peptide to the buyer's specified sequence.