BPC-157 and TB-500 compared
Two repair peptides with different mechanisms. What each is studied for, what the evidence supports, and how handling differs.
Practical reference for handling research compounds. Written to be used at the bench rather than skimmed, and updated as the catalogue changes.
Freeze thaw cycles and shelf life
What degrades a peptide in practice, how much a freeze thaw cycle actually costs you, and how to plan aliquots so it stops mattering.
How to choose a research peptide supplier
Nine questions that separate a supplier running real analysis from one reselling someone else’s paperwork, and what each answer actually tells you.
How to read a certificate of analysis
A section by section walkthrough of a peptide certificate: what each figure means, what it does not mean, and the checks worth making before you accept a batch.
NAD+, NMN and NR compared
Three related molecules routinely treated as interchangeable in discussion. How they differ and which your protocol actually needs.
Net peptide content, and why purity is not the same thing
A vial at 99 percent HPLC purity can be around 75 percent peptide by mass. Where the rest goes, and when the difference matters.
Quality and verification
How every batch is tested, what the certificate of analysis shows, and how to read it.
Reconstitution and solvents
Choosing a solvent, adding it without damaging the peptide, working out concentrations, and the handling errors that cost people a vial.
Storage and handling
Temperature, light, reconstitution and shelf life, and what actually degrades a compound in practice.
Tirzepatide and retatrutide compared
Dual against triple receptor agonism. What each targets, how the pharmacology differs, and where each sits regulatorily.
What a purity figure actually means
HPLC purity, net peptide content, and why two suppliers quoting 99 percent are not necessarily selling the same thing.
Question not answered here?
Ask us about any compound in the catalogue and a real person will answer.