American Peptide Company, Inc. (APC) offers comprehensive selections of pre-manufactured catalog peptides in convenient aliquots, a complete spectrum of custom synthesis services from array screens to mg and kg of research-grade peptides, and cGMP manufacturing of pharmaceutical-grade peptides for clinical trials. APC is experienced in solid-phase and solution-phase peptide synthesis and organic conjugations to proteins, toxoids, and PEG. We are producing milligrams to multi-kg of Active Pharmaceutical Ingredients in our newest large-scale cGMP peptide manufacturing plant located in Vista, California. With offices in the USA and Japan, APC is dedicated to delivering high-quality peptides to pharmaceutical and biotech companies.