About SigmaStacks
SigmaStacks supplies research-grade peptides to laboratories, institutions, and independent researchers. We exist for one reason: purity you can verify.
Every compound we sell is tested by HPLC, supplied as a lyophilized powder, and backed by a Certificate of Analysis kept on file. No mystery vials, no hand-waving — just traceable, spec’d material.
Our standards
- ≥99% purity, verified by HPLC
- Third-party tested, COA’s on file
- Lyophilized and shipped to preserve integrity
- Sourced from cGMP-aligned manufacturing
Important
All products are sold strictly for research use only. They are not for human consumption and not for veterinary use, and are not intended to diagnose, treat, cure, or prevent any disease. By purchasing, you confirm you are 21+ and a qualified researcher using these materials for legitimate in-vitro / laboratory research.