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Growth-Factor Research · Fragment

AOD-9604: Research Overview

What is AOD-9604? AOD-9604 is a modified peptide fragment of human growth hormone, corresponding to the C-terminal region hGH 177-191 with an added N-terminal tyrosine residue. It is studied in preclinical laboratory models of lipid metabolism. It is not an approved drug and is supplied strictly for laboratory research use.
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Technical profile

CompoundAOD-9604 (AOD9604)
ClassModified growth-hormone fragment analog
Sequence originC-terminal region of human growth hormone, hGH 177-191, with an added N-terminal tyrosine residue
Molecular weight~1815.1 g/mol (approximate)
Regulatory statusNot an approved drug in any jurisdiction
Form suppliedLyophilized powder, sealed vial
StorageLyophilized: 2–8 °C, protected from light.
VerificationHPLC purity ≥99%, sterility, endotoxins, heavy metals — documented on the batch COA

What does the research literature cover?

AOD-9604 was developed as a fragment analog intended to isolate one region of the growth-hormone molecule from the rest of the sequence. Published laboratory work has examined it in the context of:

Important context: the published evidence base is predominantly preclinical. AOD-9604 has no approved therapeutic use in any jurisdiction. Summaries here describe what researchers have studied — they are not claims about effects in humans.

Why purity matters for AOD-9604 research

At roughly sixteen residues with a modified N-terminus, AOD-9604 is long enough that synthesis-related deletion sequences and oxidation products are a real risk, and those impurities are difficult to distinguish from the target without proper analytics. Every VP Peptides AOD-9604 batch ships with a Certificate of Analysis documenting ≥99% HPLC purity plus sterility, endotoxin and heavy-metal testing from independent third-party testing.

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Frequently asked questions

Is AOD-9604 an approved drug?

No. AOD-9604 is not an approved drug in the United States or any other jurisdiction, and it is not approved for human use. VP Peptides supplies it strictly as a research chemical for in-vitro and laboratory investigation. It is not a drug, supplement, or food ingredient.

How does AOD-9604 relate to human growth hormone?

It corresponds to a short C-terminal region of the human growth hormone sequence — residues 177 through 191 — with an added tyrosine at the N-terminus. It is a fragment analog, not the intact hormone, and the two are studied in different experimental contexts.

What does an AOD-9604 Certificate of Analysis include?

Each batch COA documents HPLC purity (≥99% specification), sterility, endotoxin and heavy-metal screening results, along with batch number and test date.

How should AOD-9604 be stored in the lab?

Lyophilized vials should be kept at 2–8 °C and protected from light.

From lipolytic mechanism to human trials

A recurring thread in the AOD-9604 literature is the attempt to isolate one activity of growth hormone — its influence on fat metabolism — from the rest of the molecule. Preclinical reports on the C-terminal region describe fat-tissue signaling in adipocyte and rodent models, and mechanistic work in mice has examined the role of the β3-adrenergic receptor, a Gs-coupled receptor on adipocytes associated with lipolytic signaling. In one line of experiments, comparisons across normal and β3-adrenergic-receptor-deficient animals were used to probe how much of the observed lipid-metabolism response depended on that receptor pathway. These are descriptions of assay systems and signaling questions, not demonstrations of an effect in people.

AOD-9604 later moved into human investigational study, and this is the part of its history most often misread. Clinical evaluation in the context of obesity did not establish the weight outcome that the preclinical rationale had anticipated; across the reported human work, the hoped-for effect was not confirmed as a durable, agreed result. That gap between a plausible preclinical mechanism and an unconfirmed clinical endpoint is itself a documented feature of the compound's literature, and it is the honest summary of where the evidence stands.

None of this constitutes a claim of benefit. AOD-9604 is not an approved drug in the United States or any other jurisdiction, and it is distinct from any approved growth-hormone medicine. VP Peptides describes this literature only to situate the compound accurately, and supplies AOD-9604 strictly as a research material for laboratory use.

Selected research references

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Research use only. All products described on this page are furnished for laboratory research purposes only and are not for human or veterinary use, not for use in food or cosmetics, and not for any diagnostic or therapeutic application. Nothing on this page is medical advice or a claim of safety or efficacy in humans. Research summaries reference publicly available preclinical literature; specific citations are listed in the references above.