Custom Synthesis Suppliers

Suppliers offering custom peptide design, solid-phase synthesis (SPPS), sequence optimization, and modified peptide production for research and commercial applications. Custom synthesis capability spans Fmoc/t-Boc SPPS from milligram to multikilogram scale, solution-phase fragment condensation for longer sequences, and purification via preparative HPLC with orthogonal analytical methods including LC-MS, amino acid analysis, and peptide mapping. Custom synthesis providers typically handle modified peptides including phosphorylated, acetylated, biotinylated, fluorescently labeled, and cyclized sequences for drug discovery, epitope mapping, and assay development. Minimum order quantities vary by sequence complexity and purification requirements. Showing 168 listed suppliers.

Our directory lists suppliers offering custom synthesis services across Global, Europe, Asia, North America, South America regions. Supplier types include CDMO, Life Science Supplier, Bulk Wholesale, Institutional, Research Supplier, Chemical Supplier, Pharmacy, Wholesale, Retail Research Peptides, Manufacturer, Service Provider, Supplier. Browse individual profiles below for detailed capability information, manufacturing standards, and quality documentation.

Directory listing last reviewed July 2026.