Buy Peptides With Confidence
Precision-manufactured research peptides with complete analytical documentation. Every lot third-party verified for purity, identity and quantity for uncompromising quality.
Browse Peptide Catalog
Reference-Grade
Laboratory standard quality with complete traceability
COA Verified
Certificate of Analysis with every batch shipment
HPLC Tested
High-performance liquid chromatography analysis
Full Transparency
Industry-leading traceability from manufacture to delivery
Featured Research Peptides
Explore our most requested research compounds, each manufactured to the highest analytical standards with complete documentation and lot-specific certificates of analysis.
Built for Researchers Who Demand Precision
When your research depends on consistency and purity, trust the laboratory-grade standards that set us apart from hobbyist suppliers.
Analytical Rigor
Complete HPLC purity, identity and quantification with every batch. Full analytical profiles available for research verification.
Consistent Quality
Lot-to-lot consistency with quality-controlled manufacturing processes. Reproducible and dependable results for your research protocols.
Professional Fulfillment
Free shipping on orders over $200. Secure, protected shipping with protective packaging. Professional handling from door to door.
Research Support
Technical documentation and research protocols available. Dedicated support for institutional and academic researchers.
Quality Assurance Process
Every peptide undergoes rigorous testing and documentation before reaching your laboratory. Our multi-step verification ensures research-grade quality.
Synthesis
Precise solid-phase peptide synthesis using pharmaceutical-grade amino acids and coupling reagents.
Purification
Advanced HPLC purification to achieve >99% purity with complete removal of synthesis by-products.
Analysis
HPLC purity, identity, and quantification testing with complete molecular characterization.
Documentation
Certificate of Analysis generation with full analytical data and storage recommendations.
Complete Research Documentation
Access comprehensive analytical data, research protocols, and technical documentation for every peptide in our catalog.
Certificates of Analysis
Complete COA with HPLC chromatograms, purity, identity, and quantification analysis for every batch.
Research Guides
Comprehensive guides for storage, handling, and general research protocols for peptides.
Product Knowledge Base
Wikipedia-style articles about each product with detailed information on every product page.
Important: Research Compliance Notice and Disclaimer
For Research Use Only – Not for Human or Veterinary Use. All products sold by Cosmic Peptides are intended strictly for laboratory research and analytical purposes by qualified professionals. These materials are not intended for human or animal use and are not approved for any therapeutic, diagnostic, or medical application.
Cosmic Peptides is a chemical supplier, not a compounding pharmacy or chemical compounding facility as defined under 503A of the Federal Food, Drug, and Cosmetic Act. Cosmic Peptides is not an outsourcing facility as defined under 503B of the Federal Food, Drug, and Cosmetic Act. Our products are not drugs, food, cosmetics, or dietary supplements and have not been evaluated by the FDA.
These products are intended for in vitro research only. Any use in humans or animals is strictly prohibited and may violate federal, state, or local laws, including the Federal Food, Drug, and Cosmetic Act. No therapeutic, diagnostic, or clinical application is implied or permitted.
The statements made on this website have not been evaluated by the US Food and Drug Administration. Our products are not intended to diagnose, treat, cure, or prevent any disease. The purchaser assumes all responsibility for compliance with applicable regulations and appropriate use of these research materials.