Peptide purification accounts for 30-50% of API cost and remains the manufacturing bottleneck no one discusses. This guide covers RP-HPLC, SMB, nanofiltration, and the emerging methods that could reshape purification economics.
Peptide stability testing errors — from testing only at pH 7.4 to filing without forced degradation data — are the leading cause of peptide CMC Complete Response Letters. Experienced developers begin stability studies at lead optimization, not after formulation lock.
A comprehensive guide to peptide drug development in 2026: discovery technologies, synthesis methods, therapeutic classes, delivery systems, regulatory pathways, manufacturing economics, and market dynamics. For researchers, investors, and industry professionals.
Peptide API manufacturing costs range from $300 to $50,000+ per gram depending on length and complexity. HPLC purification accounts for 30-50% of total cost. This analysis breaks down the economics and reveals where experienced CDMOs focus their optimization efforts.
