Lab Handling
How to Store Reconstituted Peptides: Fridge, Freezer, Time
Do peptides need refrigeration once reconstituted? Why solutions degrade faster than powder, how long they keep, time out of the fridge and freezing aliquots.
BEHIND THE ARTICLES
Jesse Brooks
Areas of expertise: Peptide lead discovery & screening, structural modification & stability optimization, pharmacodynamics & mechanism of action
Published articles
Peptide Profiles
What Is Cagrilintide? The Long-Acting Amylin Analogue
Cagrilintide is a lipidated, long-acting amylin analogue acting on amylin and calcitonin receptors. Its design, mechanism and phase 2 data.
Peptide Profiles
What Is BPC-157? Structure, Mechanisms and Research Status
BPC-157 is a synthetic 15-amino-acid peptide from a gastric protein fragment. Its structure, proposed mechanisms, key animal studies and limited human evidence.
Peptide Profiles
BPC-157 + TB-500 Blend: Composition and Lab Handling
What a BPC-157 + TB-500 blend contains, how to calculate each peptide's concentration after reconstitution, how blends are tested and what is known.
Lab Handling
What Is Bacteriostatic Water? Composition and Lab Use
Bacteriostatic water is sterile water for injection with 0.9% benzyl alcohol. What it contains, how the preservative works, label restrictions and its lab uses.
Peptide Profiles
What Is AOD-9604? The hGH 177-191 Fragment Analogue
AOD-9604 is a 16-residue analogue of hGH 177-191 with an added tyrosine. Its structure, rodent lipid-metabolism studies and detection methods.
Testing & Quality
Tirzepatide Powder: Appearance, Colour and Quality Tests
What lyophilized tirzepatide powder and solution should look like, what colour changes mean, and how identity, purity and content are tested.
Comparisons
Tesamorelin vs Sermorelin: Two GHRH Analogues Compared
Sermorelin is GHRH(1-29)-NH2; tesamorelin is full-length GHRH(1-44) with an N-terminal hexenoyl group. Structure, stability and clinical history compared.
Comparisons
Tesamorelin vs Ipamorelin: GHRH Receptor vs Ghrelin Receptor
Tesamorelin activates the GHRH receptor; ipamorelin activates the ghrelin receptor. Structure, pharmacology, evidence base and why they are studied together.
Comparisons
Semax vs Selank: Structure and Research Compared
Semax and Selank share a Pro-Gly-Pro tail but come from different parent peptides. How their structures, mechanisms and published research differ.
Comparisons
Retatrutide vs Tirzepatide: Receptors, PK and Trial Data
Retatrutide adds glucagon receptor activity to tirzepatide's GIP/GLP-1 agonism. Receptors, half-life, status and trial endpoints compared.
Comparisons
Retatrutide vs Semaglutide: One Receptor or Three
Semaglutide is a selective GLP-1 receptor agonist; retatrutide activates GIP, GLP-1 and glucagon receptors. Structure, half-life and trial endpoints compared.