Custom Synthesis

GenScript Biotech is a publicly traded biotechnology company (Hong Kong Stock Exchange, listed 2015) founded in 2002 in New Jersey, with U.S. peptide-services operations headquartered at 860 Centennial Ave, Piscataway, NJ, and legal entities spanning more than 100 countries — a scale and corporate structure that sets it apart from the direct-to-researcher retail vendors that make up most of the Peptides.SO supplier directory. Rather than selling finished research vials from a fixed catalog, GenScript operates as a contract research and manufacturing organization offering custom peptide synthesis on demand, alongside adjacent gene synthesis, molecular cloning, and antibody/protein engineering service lines.

The company's peptide division is built around its proprietary PepPower(TM) microwave-assisted synthesis platform, which GenScript states enables turnaround as fast as 5 days with guaranteed peptide quantity and high purity on standard custom orders. GenScript reports having synthesized more than 600,000 peptides for over 10,000 clients worldwide across 18+ years of peptide-service operation, and offers both research-grade and cGMP-grade synthesis tiers -- a dual capability relevant to researchers who may need to scale a validated sequence from small research quantities toward higher-purity, regulatory-track material without switching vendors.

For high-volume or long-sequence needs, GenScript's large-scale peptide synthesis service extends the same purity and success-rate guarantees to peptides up to 200 amino acids, backed by preliminary cost analysis, process optimization, and detailed QC reporting per project. Manufacturing capacity includes a dedicated life-science production facility in Zhenjiang, Jiangsu, China (expanded in 2023, ISO 9001 certified, ~91,300 sq ft of automated clean-room space) supporting both peptide and oligonucleotide synthesis at scale.

Researchers evaluating GenScript on Peptides.SO should note this listing represents a custom-synthesis service relationship rather than a fixed-price retail catalog: pricing, minimum order quantities, and lead times are quoted per sequence and per purity/scale tier rather than published as standing per-mg prices, so direct cost-per-mg comparison against catalog-based Peptides.SO vendors is not meaningful without requesting a project-specific quote. All GenScript peptide products are supplied for laboratory research use only, not for human or animal consumption.