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Articles

Research articles from Corex Vitality™ on peptide chemistry, laboratory testing and certificates of analysis, plus plain-English summaries of newly published longevity research. New to the topic? Start with our Learning Hub.

Card titled Retatrutide Structure: 39 residues, Aib2, aMeL13 and Aib20, C20 diacid chain on Lys17, cAMP tested in cells.

Retatrutide Structure: Sequence, Aib Residues and the Fatty-Acid Chain

How retatrutide is built: the 39-residue chain, Aib2, alpha-MeL13 and Aib20, the
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Card titled UK Interest in Retatrutide showing the August 2026 peak, the October spikes, 55 UK vendors and a reminder to verify the COA.

UK Interest in Retatrutide: What the 2026 Search Data Show

What UK Google Trends data show about interest in retatrutide in 2026,
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Card titled Autophagy Explained showing the five steps: signal, phagophore, autophagosome, fusion, recycle.

Autophagy Explained: How Cells Recycle and How Labs Measure It

How cells wrap, digest and reuse their own parts, what mTOR, AMPK
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Card showing three peptide impurity types and their mass change: deletion −57 Da, oxidation +16 Da, racemisation 0 Da.

Peptide Impurities Explained: Deletions, Oxidation & Other Related Substances

What the small peaks behind a purity figure usually are: deletion and
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Diagram comparing GLP-1R, GIPR, and GCGR single, dual, and triple Class B GPCR receptor signalling pathways.

GLP-1, GIP & Glucagon Receptor Peptides: Multi-Agonist Signalling Explained

How single, dual, and triple Class B GPCR agonists engage GLP-1R, GIPR,
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Diagram comparing a 3 mL pre-filled borosilicate peptide pen cartridge with a lyophilised peptide vial workflow.

Pre-Filled Peptide Pens vs Lyophilised Vials: Cartridge Mechanics & Stability

How 3 mL borosilicate pen cartridges and lyophilised peptide vials compare across
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Diagram comparing trifluoroacetate, acetate and hydrochloride peptide salt forms and the illustrative share of powder weight that is peptide.

Peptide Counter-Ions Explained: TFA vs Acetate vs Hydrochloride

What are peptide counter-ions? A plain-English guide to TFA, acetate and hydrochloride
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Lyophilised Peptides, Reconstitution & −20 °C Storage: A Practical Guide to the Corex Vitality™ Learning Hub

Plain-English laboratory guide to lyophilised peptides, bacteriostatic water reconstitution, concentration maths, −20
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3D ball-and-stick model of the pentapeptide Leu-enkephalin (Tyr-Gly-Gly-Phe-Leu) with its four peptide bonds highlighted in gold

What Are Peptides?

A plain-English research chemistry guide to peptides: how amino acids join through
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Research update: senolytics and exercise in the ageing mouse heart

Research update: long-term senolytic treatment and exercise in the ageing mouse heart

Research update · October 2026 · Summarises a published peer-reviewed study for

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Laboratory autosampler loading rows of sample vials for analysis

Laboratory Testing Explained: From Sample to Certificate

What happens to a sample at the lab, what each part of
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For in-vitro laboratory research use only. Not for human or veterinary use. These products are research chemicals. They are not medicines, food, or supplements. They have not been evaluated by the MHRA, FDA, or any other regulatory body. Not intended to diagnose, treat, cure, or prevent any disease.

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