Chain & Assay
Plain, referenced explainers on research peptides: compound identity, published laboratory and animal-model research, quality control and lab handling.
Latest articles
How to vet a research-peptide supplier: what independent testing can and cannot show
A checklist for laboratories evaluating a research-peptide supplier, what a third-party test report proves and leaves open, and the red flags that published product analyses point to.
In Quality & QC
BPC-157: what the published research describes
BPC-157's identity (sequence, formula, CAS), the cell and animal models it has been studied in, who did the research, and how little human data exists.
GHK-Cu: identity, copper chemistry and published research
What GHK-Cu is (sequence, formula, CAS numbers), how the tripeptide binds copper(II), and what cell-culture, gene-expression and rat studies describe.
HPLC vs mass spectrometry: what peptide purity and identity tests show
How reversed-phase HPLC and mass spectrometry test a synthetic peptide, what purity by peak area means, and how to read a chromatogram and a mass spectrum.
In Quality & QC
How lyophilised peptides are stored: what stability studies show
What the literature says about storing freeze-dried peptides - degradation in the dry state and how temperature, moisture, light and oxygen affect it.
In Lab handling
SS-31 and MOTS-c: a roundup of mitochondria-focused peptide research
What published research reports on SS-31 (elamipretide) and MOTS-c, grouped by model type, with the elamipretide trial landscape and the open questions.
How to read a peptide Certificate of Analysis (COA)
What each section of a research-peptide Certificate of Analysis means, from mass-spectrometry identity and HPLC purity to peptide content, counter-ions, water and endotoxin.
In Quality & QC
Topics
Compound research explainers
Explainers on individual research peptides: identity, the cell and animal models they have been studied in, what published studies describe, and open questions.
Literature roundups
Roundups of the published peptide research literature: what recent laboratory and animal-model studies report, and how they were designed.
Quality & QC
How research-peptide quality is tested and documented: certificates of analysis, HPLC purity, mass-spectrometry identity, endotoxin testing and supplier vetting.
Lab handling
Storage and stability of lyophilised research peptides in the laboratory, as described in the published literature.
Everything here concerns laboratory, in-vitro and animal-model research. The compounds discussed are research materials, not for human consumption. Read our research-use-only position and how articles are checked on the About page.