WADA prohibited list is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Updated 2026-06-03. Numbers and descriptions here follow the published literature rather than marketing material.
Proposed mechanisms for AOD-9604 focus on fat cells. Laboratory studies suggest the peptide can increase lipolysis, the breakdown of stored fat, and reduce lipogenesis, the formation of new fat. Unlike full human growth hormone, it does not appear to stimulate substantial IGF-1 production in the studies reported so far. Some evidence points to beta-adrenergic signaling, but the precise receptor targets and downstream pathways remain unresolved. The fragment is not thought to act through the classical growth hormone receptor.
Clinical development of AOD-9604 included trials in people with obesity. Reports from early-phase and mid-phase studies described modest or inconsistent changes in body weight. A phase IIb program did not meet its primary endpoint, and the compound was not approved for medical use. Differences in formulation, delivery route, and participant characteristics may explain some of the variation. Later investigations explored whether the peptide might have effects in other tissues, including cartilage.
Regulatory treatment of AOD-9604 is shaped by its classification as a peptide hormone. The World Anti-Doping Agency lists it as a prohibited substance, and many national anti-doping organizations adopt that list. It does not hold approval as a prescription medicine in the United States, the European Union, or other major markets. Products sold online are frequently labeled for research use only and may not undergo independent quality testing. Import and possession rules differ by country, so legal status depends on local law.
AOD-9604 is a synthetic peptide that corresponds to a short section of human growth hormone. It is commonly identified as hGH fragment 176-191 because its sequence matches residues at the C-terminal end of the hormone. The molecule contains sixteen amino acids and is made by solid-phase peptide synthesis. Researchers study it for metabolic effects rather than for the growth-promoting actions associated with full human growth hormone. Its small size distinguishes it from the complete 191-amino-acid hormone.
Several names appear in scientific and commercial settings. AOD9604 and AOD-9604 are development codes used interchangeably, while hGH fragment 176-191 describes the same region. The peptide includes a disulfide bond between two cysteine residues, which helps shape its three-dimensional structure. Different suppliers may provide acetate or other salt forms, and purity can vary. These differences matter because analytical tests and biological assays can respond to the specific form being studied.
| Property | Value | Notes |
|---|---|---|
| Typical storage temperature | -20 °C | Lyophilized peptide; protect from moisture and light. |
| Typical analytical method | HPLC and mass spectrometry | Used to confirm identity and estimate purity. |
| Common synonyms | AOD9604; hGH 176-191 | Naming varies by supplier and publication. |
| Disulfide bonds | One | Affects folded structure and stability. |
| Typical research purity | ≥95% | Value depends on supplier and analytical method. |
AOD-9604 is listed as a prohibited substance in sport by the World Anti-Doping Agency. It falls under the peptide hormones, growth factors, related substances, and mimetics class on the prohibited list. Anti-doping organizations treat its presence in an athlete's sample as an adverse finding unless a therapeutic use exemption applies. The prohibition reflects concerns about performance enhancement in competitive settings and the difficulty of distinguishing exogenous peptide use from endogenous hormone fragments.
Detection of AOD-9604 in biological samples relies on analytical techniques capable of distinguishing a small synthetic peptide from related endogenous sequences. Liquid chromatography coupled with tandem mass spectrometry is commonly used for confirmatory analysis. Sample preparation may involve immunoaffinity enrichment or solid-phase extraction to concentrate the peptide. Because the molecule is small and may be present at low concentrations, assay sensitivity and specificity are ongoing analytical challenges. Laboratories also validate methods against reference materials when available.
AOD-9604 has been investigated mainly in the context of body fat and metabolic endpoints. Some early animal and small human studies reported changes in fat mass or lipid markers, but findings were not uniform. Larger, well-controlled trials that would establish efficacy are lacking in the public literature. As a result, claims about weight loss or metabolic benefit remain investigational rather than established. The distinction between a research finding and a proven clinical outcome is central to discussing this peptide.
Regulatory bodies have taken different approaches to AOD-9604. It is not approved as a prescription medicine by major agencies such as the U.S. Food and Drug Administration or the European Medicines Agency. In sport, the World Anti-Doping Agency prohibits peptide hormones, growth factors, and related substances, and AOD-9604 has been treated as a prohibited substance. These regulatory decisions reflect concerns about safety, efficacy, and potential misuse rather than proof of benefit.
The fragment includes residues that can form an internal disulfide bond between two cysteine positions. This structural feature can influence how the peptide folds and how stable it is in solution. AOD-9604 differs from full-length hGH in size and receptor interactions; it does not contain the entire growth hormone sequence. Published descriptions sometimes use slightly different residue numbering, so sequence information should be checked against primary sources. The molecule is small compared with intact hGH, which affects analytical detection and purification approaches.
Interest in AOD-9604 arose from attempts to separate metabolic effects from growth effects attributed to hGH. Early work explored whether the fragment could influence lipolysis or fat oxidation without promoting growth. Those questions remain partly unresolved because human data are limited and results have varied across studies. The peptide is not a hormone replacement for hGH and is not equivalent to hGH in clinical use. Its research history includes both laboratory studies and commercial marketing claims that are not the same as regulatory approval.
Following that investigation and one of their own that faulted the university for failing to act on warnings and protect the campus, the university's faculty senate voted "no confidence" in the president and many other leaders at the university. In 2023, the University of Arizona faced a financial crisis, allegedly "losing track of more than $240 million through accounting errors and flawed financial projections." Subsequent investigative reporting by The Arizona Republic linked much of the crisis to the university's purchase of Ashford University, accusing university administrators of knowing that Ashford was experiencing "a downward enrollment spiral that began years before [the purchase] and dismal graduation and retention rates". In April 2024, the UA chapter of Students for Justice in Palestine joined student protests across the USA against the war in Gaza, during what they called "Israeli Apartheid Week". The encampment was attacked and dispersed by police firing rubber bullets, tear gas and pepper balls. Bystanders and press were also hurt in the police violence. The students were protesting against UA involvement with companies supporting the "genocide and ethnic cleansing in Palestine" and called for divestment.
=== Structure and stereochemistry === Nemonapride is a cis-2-methyl-3-amino-pyrrolidine derivative, which was later shown to express most of its action as a drug to treat schizophrenia from its homochiral (+)-(2R,3R) form.
AZX + e− → AZ−1X′ + νe Capture of a free electron is allowed, but physical conditions make this generally negligible outside stars. An example of electron capture is one of the decay modes of krypton-81 into bromine-81:
Sources: en.wikipedia.org
==== Crusader period ==== The Crusaders renamed the city Ibelin and built its castle there in 1141. An excavation led by Professor Dan Bahat in 2005 revealed the main gate. Its namesake noble family, the House of Ibelin, was important in the Kingdom of Jerusalem and later in the Kingdom of Cyprus. Salvage excavations at the west of the tell unearthed a stash of 53 Crusader coins of the 12th and 13th centuries.
=== Mechanism === Arsenite inhibits not only the formation of acetyl-CoA but also the enzyme succinic dehydrogenase. Arsenate can replace phosphate in many reactions. It can form Glc-6-arsenate in vitro; therefore, it has been argued that hexokinase could be inhibited. (Eventually this may be a mechanism leading to muscle weakness in chronic arsenic poisoning.) In the glyceraldehyde 3-phosphate dehydrogenase reaction arsenate attacks the enzyme-bound thioester. The formed 1-arseno-3-phosphoglycerate is unstable and hydrolyzes spontaneously. Thus, ATP formation in glycolysis is inhibited while bypassing the phosphoglycerate kinase reaction. (Moreover, the formation of 2,3-bisphosphoglycerate in erythrocytes might be affected, followed by a higher oxygen affinity of hemoglobin and subsequently enhanced cyanosis.) As shown by Gresser (1981), submitochondrial particles synthesize adenosine-5'-diphosphate-arsenate from ADP and arsenate in presence of succinate. Thus, by a variety of mechanisms, arsenate leads to an impairment of cell respiration and subsequently diminished ATP formation. This is consistent with observed ATP depletion of exposed cells and histopathological findings of mitochondrial and cell swelling, glycogen depletion in liver cells and fatty change in liver, heart and kidney. Experiments demonstrated enhanced arterial thrombosis in a rat animal model, elevations of serotonin levels, thromboxane A[2], and adhesion proteins in platelets, while human platelets showed similar responses.
The international drug control conventions, also known as the United Nations drug control conventions, are three related, non self-executing treaties that establish an international legal framework for drug control. They serve to maintain a classification system of controlled substances including psychoactive drugs and precursors, to ensure the regulated supply of those substances useful for medical and scientific purposes, and to prevent other uses. Ratification is near universal among UN member countries. The treaties are the Single Convention on Narcotic Drugs (1961; amended in 1972), the Convention on Psychotropic Substances (1971), and the UN Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances (1988). There are also other minor treaties addressing drugs, such as the Convention on the Rights of the Child or the UN Convention on the Law of the Sea.
Sources: en.wikipedia.org
Artistic Achievement – Ori and the Blind Forest Audio Achievement – Everybody's Gone to the Rapture Best Game – Fallout 4 British Game – Batman: Arkham Knight Debut Game – Her Story Family – Rocket League Game Design – Bloodborne Game Innovation – Her Story Mobile & Handheld – Her Story Multiplayer – Rocket League Music - Everybody's Gone to the Rapture Original Property – Until Dawn Performer – Merle Dandridge (as Kate Collins, Everybody's Gone to the Rapture) Persistent Game – Prison Architect Sports – Rocket League Story – Life Is Strange Special - Amy Hennig BAFTA Ones to Watch Award – Sundown Academy Fellowship – John Carmack AMD eSports Audience Award – Smite
=== The World Wars === With the rest of the Marshalls, Enewetak was captured by the Imperial Japanese Navy in 1914, during World War I and mandated to the Empire of Japan by the League of Nations in 1920. The Japanese administered the island under the South Seas Mandate, but mostly left affairs in hands of traditional local leaders until the start of World War II. The atoll, together with other parts of Marshall Islands located to the west of 164°E, was placed under the governance of Pohnpei district during the Japanese administration period, separately from the rest of the Marshall Islands.
These organostannanes are also stable to both air and moisture, and many of these reagents either are commercially available or can be synthesized from literature precedent. However, these tin reagents tend to be highly toxic. X is typically a halide, such as Cl, Br, or I, yet pseudohalides such as triflates and sulfonates and phosphates can also be used. Several reviews have been published.
Sources: en.wikipedia.org
No. Major drug regulators have not approved AOD-9604 for weight loss or any other therapeutic indication. It remains an investigational compound studied in research settings.
The World Anti-Doping Agency classifies it as a prohibited peptide hormone. Athletes under anti-doping rules are not permitted to use it. Its presence can trigger a doping violation.
It is a fragment of growth hormone rather than a substance that signals the pituitary to release more hormone. Studies have not shown a consistent rise in IGF-1 or full growth hormone. Its metabolic effects, if any, appear separate from those of the complete hormone.
AOD-9604 is a synthetic peptide fragment of human growth hormone. It corresponds to the C-terminal region known as hGH 176-191 and is studied for metabolic effects. It is not an approved therapeutic drug.