Category
News & Analysis
CagriSema and Amylin Analogs: Why Researchers Pair Cagrilintide with Semaglutide
Amylin and GLP-1 are different hormones acting at different receptors on partly shared circuits. That non-overlap is the entire rationale for pairing cagrilintide with semaglutide.
The Next GLP-1s: Amycretin, Ecnoglutide, Orforglipron and Survodutide Compared
Four candidates, four different bets on what comes after semaglutide and tirzepatide. A receptor-level comparison of amycretin, ecnoglutide, orforglipron and survodutide for research selection.
What 'Research Use Only' Means After the 2025–2026 FDA Enforcement Wave
RUO is a labeling and distribution category with a specific regulatory meaning. Here is what it covers, what it never covered, and what changed after 2025.
Retatrutide Explained: What the Published Phase-3 Data Reported (2026 Update)
Retatrutide is a single peptide that engages three receptors. Here is what the published trials reported through 2026, what is still press-release only, and what that means for reference-standard sourcing.
BPC-157 Research in 2026: What Has Been Studied, What Hasn't
The BPC-157 literature is large, consistent and almost entirely preclinical. Mapping what has been studied — and the specific gaps — is more useful than another summary of rodent results.
Choosing a Research Peptide Vendor in 2026: 9 Things That Actually Matter
Purity percentages are the easiest thing to print and the hardest thing to verify. These nine checks look at what a supplier documents, not what it claims.
CJC-1295, Ipamorelin, Sermorelin: The GH Secretagogue Landscape Explained
Sermorelin, CJC-1295, ipamorelin and the GHRPs are routinely lumped together. They divide cleanly into two receptor families that do different things to the same axis.
GHK-Cu: 50 Years of Copper Peptide Research
GHK was isolated from human plasma in the early 1970s. Half a century later its copper complex is still the most-studied copper peptide, and its chemistry drives every handling decision.
KLOW, GLOW and Wolverine: How Recovery Blends Are Composed
Three named recovery blends, three different component sets. The mass on the label tells you far less than the molar arithmetic and the blend COA do.
Peptide Storage in Hot Weather: What Degrades and What Doesn't
A lyophilised cake tolerates summer transit far better than most buyers assume. A reconstituted solution does not. The difference is water, and it explains almost everything.
How to Read a Peptide COA Like a Chemist
Most buyers read the purity number and stop. An analyst reads the method conditions, the charge-state series and the net peptide content — and that is where the information actually is.
TB-500 vs Thymosin Beta-4: A Fragment Is Not the Whole Protein
Almost all the published thymosin beta-4 biology was generated with the full 43-residue protein, not the heptapeptide sold as TB-500. The molecular weights differ by a factor of five.