PeptiDex Research Library
A structured library of lab-verification methods, supplier-evaluation guides, and category-level peptide-research explainers. Educational content only.
Lab Verification & Analytical Methods
Lab Verification Overview
How researchers assess whether a research-grade peptide is what the label claims.
HPLC Purity
What HPLC measures, why ≥99% is a common research benchmark, and how to interpret a chromatogram in a COA.
Mass Spectrometry
How mass spec confirms peptide identity and molecular mass alongside HPLC.
How to Read a COA
A walkthrough of the fields on a Certificate of Analysis and what each one tells a researcher.
Research Grade vs Pharmaceutical Grade
The categorical distinction between research-use peptides and pharmaceutical-grade material.
Vendor Evaluation
The signals researchers commonly use when assessing a research-peptide supplier.
Category Hubs
GLP-1 Family
Semaglutide, Tirzepatide, Retatrutide, Liraglutide, Dulaglutide, Cagrilintide, Cagrisema, Mazdutide, Survodutide and adjacent metabolic-research compounds.
Growth & GH-Axis
Sermorelin, CJC-1295, Ipamorelin, Hexarelin, Tesamorelin, IGF-1 analogs, PEG-MGF and adjacent compounds.
Tissue Repair
BPC-157, TB-500, KPV, LL-37, GHK-Cu and adjacent repair-research peptides.
Nootropic / CNS
Selank, Semax, Dihexa, Cerebrolysin, P21, DSIP, Pinealon and PE-22-28.
Longevity & Cellular
NAD+, SS-31, Epitalon, Humanin, FOXO4-DRI, MOTS-c and adjacent longevity-research compounds.
Specialty & Research
Niche or emerging peptide-research compounds documented in the PeptiDex library.
Comparisons
BPC-157 vs TB-500
How the two most commonly stacked tissue-repair research peptides compare in the literature.
Sermorelin vs CJC-1295
Comparing two GHRH-analog peptides used in growth-axis research.
Selank vs Semax
Two short synthetic peptides referenced in nootropic-research literature.
GLP-1 Family Comparison
Semaglutide, Tirzepatide, Retatrutide and adjacent compounds — a structured comparison for research reference.