GHK vs GHK-Cu: What Copper Binding Changes in Research
GHK and GHK-Cu are often listed side by side, but they are not interchangeable. One is a free tripeptide; the other is that tripeptide holding a copper(II) ion in a defined complex, which changes its mass, color, handling and identity testing. This guide walks through the GHK vs GHK-Cu question from a laboratory perspective: what […]
How to Calculate Peptide Concentration After Reconstitution
Research peptides usually arrive as a dry, freeze-dried powder sealed in a vial. Before that material can be used in an assay, it has to be dissolved in a known volume of liquid, and the moment you do that, one number starts to matter more than any other: the peptide concentration of the resulting solution. […]
Semax vs Selank: A Research Comparison

How Semax and Selank compare: parent peptides, sequences, research areas and regulatory status, side by side.
What Is DSIP? A Research Overview of Delta Sleep-Inducing Peptide

A factual overview of DSIP (delta sleep-inducing peptide): its discovery, the sleep and stress research it appears in, and its regulatory status.
What Is MOTS-c? A Research Overview of the Mitochondrial Peptide

A factual overview of MOTS-c: a mitochondrial-DNA-encoded peptide, the metabolism research it appears in, and its regulatory and anti-doping status.
What Is Epithalon (Epitalon)? A Research Overview

A factual overview of Epithalon (AEDG): its origin, the telomere and aging research it appears in, and its regulatory status.
What Is Selank? A Research Overview

A factual overview of Selank: its structure as a tuftsin analog, its origin, the research it appears in, and its regulatory status.
What Is Semax? A Research Overview

A factual overview of Semax: its structure as an ACTH(4-10) analog, its origin in Russia, the research it appears in, and its regulatory status.
What Is KPV? A Research Overview of the Lys-Pro-Val Peptide

A factual overview of KPV (Lys-Pro-Val): its origin as an alpha-MSH fragment, the preclinical research it appears in, and its current regulatory status.
Peptide Glossary: Key Research Terms Explained

Plain-language definitions of the terms you will meet on peptide specifications, certificates of analysis and research papers.