What Is PE 22-28?

# What Is PE 22-28? PE 22-28 is a PDE5 inhibitor peptide studied for research. ## Key Facts - Type: Synthetic peptide - Research status: Preclinical / Laboratory research - Molecular information: Synthetic peptide - Available specifications: 10mg - Testing: HPLC, Mass Spectrometry ## Detailed Overview PE 22-28 is a synthetic peptide derived from the pituitary adenylate cyclase-activating polypeptide (PACAP) that has been studied for its effects on phosphodiesterase 5 (PDE5) inhibition. Published research has investigated its effects on cGMP signaling pathways and smooth muscle relaxation. RaySunPeptide supplies PE 22-28 for qualified research and laboratory applications. PE 22-28 is a PDE5 inhibitor peptide studied for research. It is supplied by RaySunPeptide as a research-grade compound for qualified laboratory and research applications. Published research on PE 22-28 remains at the preclinical and laboratory investigation stage. Researchers studying PE 22-28 have access to peer-reviewed publications through PubMed that document various aspects of its chemical properties and biological activity. RaySunPeptide manufactures and supplies PE 22-28 with the following quality assurances: - **Purity**: ≥98% verified by HPLC - **Testing**: Each batch undergoes HPLC and Mass Spectrometry analysis - **Documentation**: Certificates of Analysis (COA) available upon request - **Packaging**: Available in multiple vial configurations > **Note**: PE 22-28 is supplied for qualified research and laboratory purposes only. It is not intended for human consumption, therapeutic use, or any application outside of controlled research environments. ## References - PubMed database (pubmed.ncbi.nlm.nih.gov) for peer-reviewed research publications on PE 22-28 - RaySunPeptide product specifications and Certificates of Analysis ## Related Products - [Selank](/products/selank) - [NA Selank amidate](/products/na-selank-amidate) - [Semax](/products/semax) - [NA Semax amidate](/products/na-semax-amidate) ## About RaySunPeptide RaySunPeptide is a peptide manufacturer and supplier based in Southeast Asia, providing research-grade peptides, proteins, and related compounds for qualified research, laboratory, and B2B applications. All products undergo rigorous quality control testing and are supplied with Certificates of Analysis (COA).