Scientific publications

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Technical articles on the research peptides in the PEPTIQUE catalogue: mechanisms, comparisons, reconstitution, certificates of analysis.

Metabolic & longevity research · 9 min

Retatrutide vs. Tirzepatide vs. Semaglutide: Triple, Dual, and Single Incretin Receptor Agonism

A technical comparison of the three incretin peptides studied in metabolic research — mechanism, target receptors, structure, published data, stability, and reconstitution. A laboratory guide.

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Skin & tissue research · 8 min

GHK-Cu vs AHK-Cu: What Is the Difference Between the Two Copper Tripeptides

Technical comparison between GHK-Cu (glycyl-histidyl-lysine) and AHK-Cu (alanyl-histidyl-lysine) — structure, copper binding, published data, research applications, reconstitution, and stability.

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Neuroscience research · 8 min

Selank vs. Semax: The Two Heptapeptides in Neuroscience Research

Technical comparison between Selank (a tuftsin analog) and Semax (an ACTH 4–7 fragment analog): origin, structure, studied mechanisms, published data, stability, and reconstitution. A laboratory guide.

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Metabolic & longevity research · 9 min

NAD+ 1000 mg: research guide, mechanisms and comparison with NMN and NR

What NAD+ is, why it declines with age, which enzymes consume it (sirtuins, PARP, CD38), how it compares with the precursors NMN and NR, and how it is reconstituted and stored in the laboratory.

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Reconstitution · 10 min

Bacteriostatic Water vs. Acetic Acid vs. "Matrix Water": The Complete Peptide Reconstitution Guide

Which reconstitution medium to use for lyophilized peptides, why bacteriostatic water with 0.9% benzyl alcohol is the standard, when acetic acid is needed, what "matrix water" is, and how to reconstitute correctly, step by step.

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Metabolic & longevity research · 9 min

How to Read a Certificate of Analysis: HPLC, Mass Spectrometry, and What ≥99% Purity Means

Guide to interpreting a research peptide's Certificate of Analysis (COA): HPLC chromatography, mass spectrometry, peptide content, water, counterions, endotoxins, batch number, and what a certificate does not say.

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Reconstitution · 9 min

Storage of lyophilised peptides: why the powder doesn't need a cold chain in transit, but needs refrigeration after receipt

Lyophilised powder vs. ready-to-use solution (pen): why form matters. How peptides degrade (hydrolysis, oxidation, deamidation, aggregation), why lyophilisation stabilises them and makes them resistant in transit, what 2–8°C means in practice after receipt, how to store them after reconstitution, and how to check a vial on arrival.

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Metabolic & longevity research · 8 min

PEPTIQUE Category Guide: Metabolic and Longevity Research, Skin and Tissue, Neuroscience, Reconstitution

A map of the PEPTIQUE catalog by research domain — the reference molecule in each category, the mechanism studied, the core literature, the available quantities, and the other products used alongside it.

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