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Scientific articles on peptide research, analytical methods, and quality documentation. Every claim cites peer-reviewed literature with PMIDs.
A mechanistic deep-dive into Follistatin, covering its domain architecture, TGF-β superfamily antagonism, and why it is studied as a dual inhibitor of activin and myostatin signaling. For research purposes only.
A factual look at the 2025-2026 wave of research peptide vendor closures, what drove it, which suppliers are confirmed shut down versus still operating, and the criteria researchers should apply when qualifying a replacement supplier.
A research overview of retatrutide, a synthetic triple receptor agonist studied for its activity at the GIP, GLP-1, and glucagon receptors. Covers molecular structure, receptor pharmacology, and how it differs from single-target GLP-1 receptor agonists. For research purposes only.
A research overview of TB-500, a synthetic peptide related to the actin-binding region of Thymosin Beta-4. Covers molecular structure, the relationship to native Thymosin Beta-4, actin regulation, and why it is studied alongside BPC-157 in tissue-repair research models. For research purposes only.
Peptide Sciences shut down in March 2026. This guide compares Amino Foundry as the leading alternative for research peptides — with ≥99% purity, third-party COAs, HPLC verification, and cold-chain shipping on every order.
Peptide Sciences voluntarily shut down on March 6, 2026, leaving nearly one million monthly visitors without a supplier. Analysis of what happened, why they closed, and what researchers should consider when evaluating alternative peptide vendors.
Comprehensive study of BPC-157 molecular structure, signaling pathways, and regenerative biological mechanisms. Synthesis of peer-reviewed data and structural findings.
Scientific review of temperature-controlled shipping protocols for research peptides. Analysis of thermal degradation pathways, stability data, and cold-chain verification methods.
Technical review of GLP-1 receptor agonist molecular mechanisms, binding affinity, and structural analogs. Analysis of current research models and peer-reviewed findings.
Analysis of High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry protocols for research-grade peptide verification. Technical overview of purity standards and identity confirmation.
Technical interpretation of Certificates of Analysis for research peptides. Analysis of HPLC data, mass spectrometry identity confirmation, and quality verification standards.
Research-focused comparison of Semax, Selank, and Dihexa examining BDNF modulation, anxiolytic mechanisms, HGF/c-Met signaling, and neuroprotective findings in published literature.
Comparative analysis of GHS peptides including CJC-1295, Ipamorelin, Sermorelin, and Tesamorelin. Molecular weights, binding sequences, and published receptor findings.
Research comparison of Epitalon, FOXO4-DRI, and GHK-Cu examining telomerase activation, senescent cell clearance, and copper-peptide tissue remodeling in published scientific literature.
A research-focused comparison of GLP-1, GIP, and dual GIP/GLP-1 agonist peptides including tirzepatide, examining receptor binding, metabolic mechanisms, and published research outcomes.
Critical assessment of quality documentation in the research peptide industry. Analysis of CLIA certification, GMP compliance, and Specification Standard requirements for research compound verification.
Molecular analysis comparing regenerative research peptides: BPC-157, TB-500, and Epitalon. Analysis of amino acid sequences, signaling mechanisms, and structural data.