Also known as Glutamyl-Tryptophan · Glu-Trp dipeptide · Bestim
A synthetic thymic dipeptide (Glu-Trp) immunomodulator — the minimal active fragment distilled from thymus peptides.
Research refreshed
Thymogen is a synthetic dipeptide, glutamyl-tryptophan (Glu-Trp), developed in the Russian bioregulator tradition as a minimal, defined immunomodulator. It is essentially the shortest active core distilled from thymic peptide preparations like Thymalin — a two-amino-acid sequence studied for restoring and balancing immune function. It has been used in Russia, given intranasally or by injection, as an immunostimulant during infection and recovery.
Thymogen is the dipeptide endpoint of a long reductionist thread in Russian peptide research: starting from whole thymus extracts (Thymalin), then isolating ever-shorter active fragments, investigators arrived at glutamyl-tryptophan — just two residues — as a sequence that still carried immunomodulatory activity. That makes it a companion to the other thymic peptides in this catalog: Thymalin (the extract) and thymosin α-1 (a 28-residue thymic peptide), with Thymogen as the minimal synthetic core.
It has been used clinically in Russia as an immunostimulant — given intranasally or by injection to support immune function during infections and convalescence — though, like the rest of the bioregulator tradition, its evidence base is concentrated there with limited independent Western trials. It is a research compound and is not FDA-approved.
Immunomodulatory (bioregulator) activity — proposed to normalize T-cell and broader immune-cell function, in the same thymic-peptide tradition as Thymalin and thymosin α-1.
Behind every vial of Thymogen is the same exacting pipeline every research peptide runs — but the chemistry plays out differently for this molecule. Here is how Thymogen, specifically, is brought into being.
On paper, Thymogen is C16H19N3O5 — about 333.34 daltons of precisely arranged atoms. Before a single bond is made, the target sequence, salt form, and purity threshold are written down as the contract the finished material must meet.
Thymogen is built one protected residue at a time by solid-phase synthesis, each cycle a deprotection, a coupling, and a wash.
The crude mixture — Thymogen plus its deletions and side products — is then separated on preparative HPLC, and where the cut is taken decides the difference between a genuinely pure peptide and a barely-passable one.
A real batch of Thymogen proves itself: identity confirmed by mass spectrometry against its ~333.34 Da, purity read directly off an analytical HPLC trace, water and counterion content measured. That batch-specific certificate of analysis is the only honest way to know what is actually in a vial of Thymogen — and a short, cold, accountable chain of custody is how that purity survives the trip to your bench.
Thymogen (glutamyl-tryptophan) is a dipeptide — one of the simplest defined immunopeptides — made trivially by solution or solid-phase synthesis. Protecting the oxidation-sensitive tryptophan and controlling the counterion are the only real considerations; there is essentially no synthetic difficulty.
Don't judge a vial by its cake. A fluffy, good-looking lyophilized powder reflects bulking agents and freeze-drying parameters — not purity. Insist on a batch-specific certificate of analysis.
Thymogen is a synthetic dipeptide (glutamyl-tryptophan) immunomodulator — the minimal active core distilled from thymic peptides, studied for balancing immune function.
Thymalin is the whole thymus peptide extract; Thymogen is the shortest active synthetic fragment (two amino acids) derived from that tradition.
It has been used in Russia as an intranasal or injectable immunostimulant during infections and recovery; its evidence base is concentrated in that research tradition.
No — it is a research compound, not FDA-approved. This page is a research and educational reference.
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