AOD-9604 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 2026-01-01. Numbers and descriptions here follow the published literature rather than marketing material.
AOD-9604 is a synthetic peptide whose structure corresponds to a C-terminal segment of human growth hormone. It is often described as hGH fragment 176-191, a 16-amino-acid sequence. The peptide was designed to isolate a region of hGH associated with fat metabolism while avoiding the full hormone's growth-promoting actions. Laboratory and commercial materials typically present it as a lyophilized powder for research use. Its identity is defined by amino acid sequence, not by a single brand.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic peptide | Based on the C-terminal region of human growth hormone. |
| Amino acid length | 16 residues | Often described as hGH fragment 176-191. |
| Appearance | Lyophilized powder | Typically white to off-white; exact appearance depends on grade. |
| Solubility | Soluble in water | Aqueous solubility depends on pH, ionic strength, and preparation. |
| Typical storage | -20 °C or lower | Lyophilized peptide is usually kept cold and dry; solutions may require freezing. |
AOD-9604 has been investigated primarily as a potential treatment for obesity and related metabolic conditions. Early laboratory work examined its effects on fat cells, and later studies moved into animal models and human clinical trials. Some trials reportedly reached Phase II, but the program did not lead to an approved medicine. Published summaries often note that weight-loss results were modest or inconsistent. The full trial data are not all publicly available in detail.
Regulatory treatment of AOD-9604 has varied. In sports anti-doping, the peptide became widely discussed during a 2013 investigation into an Australian professional sports club. Authorities at the time debated whether it fell under prohibitions on growth hormone and related substances. Later clarifications and updated lists have addressed the compound in different ways. Anyone seeking current status should consult the latest applicable rules, and commercial supply for human use is not authorized in major markets.
AOD9604 is commonly supplied as a white to off-white lyophilized powder. The powder is typically stored at -20 °C or below, protected from light and moisture, because peptides can degrade through oxidation, hydrolysis, or aggregation. If it is reconstituted for laboratory use, an appropriate aqueous buffer or solvent is chosen, and the solution is kept cold and handled to avoid repeated freeze-thaw cycles. These practices support stability but do not imply suitability for human use.
Identity and purity are usually assessed with reversed-phase high-performance liquid chromatography and mass spectrometry. Reversed-phase HPLC separates the peptide from related impurities and can estimate purity by ultraviolet absorbance, while mass spectrometry confirms the molecular mass and detects modifications. Peptide mapping, amino acid analysis, and disulfide mapping may be used when the sequence or disulfide arrangement must be verified. Because AOD9604 contains cysteine residues, oxidation and disulfide isomers are possible quality concerns in synthetic batches.
conjugative - mediate DNA transfer through conjugation and therefore spread rapidly among the bacterial cells of a population; e.g., F plasmid, many R and some col plasmids. nonconjugative - do not mediate DNA through conjugation, e.g., many R and col plasmids.
In every swing state, Trump outperformed his final polling numbers by approximately 3%, which is in line with a typical margin of error. Compared with the 2020 polls, the margin of error in 2024 in swing states was lower and high-quality national polls were more accurate. Polling averages vastly underestimated Trump's strength in both safe red and safe blue states. Florida and Texas were both projected to go for Trump by about 7%; he won each of them by about 13%. Pollster Ann Selzer released a poll in Iowa that had Harris winning the state by 3%, only for Trump to take the state by 13%. On the other hand, New Jersey was projected to be a safe state for Harris but most news stations waited until 90% of the vote was in before calling it for her, as she was only leading by 5%.
The 403,000 strong People's Liberation Army Air Force (PLAAF) was organized into five Theatre Command Air Forces (TCAF) and 24 air divisions. As of 2024, the system has been changed into 11 Corps Deputy-grade "Bases" controlling air brigades. Divisions have been mostly converted to brigades, although some (specifically the Bomber divisions, and some of the special mission units) remain operational as divisions. The largest operational units within the Aviation Corps is the air division, which has 2 to 3 aviation regiments, each with 20 to 36 aircraft. An Air Brigade has from 24 to 50 aircraft. The surface-to-air missile (SAM) Corps is organized into SAM divisions and brigades. There are also three airborne divisions manned by the PLAAF. J-XX and XXJ are names applied by Western intelligence agencies to describe programs by the People's Republic of China to develop one or more fifth-generation fighter aircraft. The PLAAF is led by Commander Chang Dingqiu and Political Commissar Guo Puxiao.
Sources: en.wikipedia.org
Yeasts, like all fungi, may have asexual and sexual reproductive cycles. The most common mode of vegetative growth in yeast is asexual reproduction by budding, where a small bud (also known as a bleb or daughter cell) is formed on the parent cell. The nucleus of the parent cell splits, producing a daughter nucleus that migrates into the daughter cell. The bud then continues to grow until it separates from the parent cell, forming a new cell. The daughter cell produced during the budding process is generally smaller than the mother cell. Some yeasts, including Schizosaccharomyces pombe, reproduce by fission instead of budding, and thereby creating two identically sized daughter cells. In general, under high-stress conditions such as nutrient starvation, haploid cells will die; under the same conditions, however, diploid cells can undergo sporulation, entering sexual reproduction (meiosis) and producing a variety of haploid spores, which can go on to mate (conjugate), reforming the diploid. The haploid fission yeast Schizosaccharomyces pombe is a facultative sexual microorganism that can undergo mating when nutrients are limited. Exposure of S. pombe to hydrogen peroxide, an agent that causes oxidative stress leading to oxidative DNA damage, strongly induces mating and the formation of meiotic spores. The budding yeast Saccharomyces cerevisiae reproduces by mitosis as diploid cells when nutrients are abundant, but when starved, this yeast undergoes meiosis to form haploid spores. Haploid cells may then reproduce asexually by mitosis. Katz Ezov et al.
==== Antioxidant activity ==== Honokiol has also been proposed as an antioxidant. The compound protects against lipid peroxidation by interfering with ROS production and migration. Accumulation of ROS extracellularly causes macromolecular damage while intracellular accumulation may induce cytokine activation.
The lack of organization structure has led to project cancellations, as it can be difficult to convince other employees to work on them. In 2020, Valve acknowledged that this made it difficult to gather momentum and had slowed its output during the 2010s. Its VR projects and Half-Life: Alyx became a turning point, setting short-term studio-wide goals to focus the company. According to Walker, "We sort of had to collectively admit we were wrong on the premise that you will be happiest if you work on something you personally want to work on the most." In January 2023, People Make Games released a report on Valve's corporate structure and culture, based on interviews with several current and former employees. They found that Valve's flat structure and stack-ranking compensation system created a poor release record and a lack of employee diversity. In 2024, Forbes estimated that Newell owned 50.1% of Valve, with the rest owned by employees. As part of Wolfire Games' lawsuit over Steam policies, case documents revealed details related to Valve's employee structure. Valve had 60 employees in 2003 and had approximately 350 employees between 2012 and 2021. Employees are categorized into administration, game development, Steam development and (from 2011) hardware development.
Sources: en.wikipedia.org
In 1938, the British government established a purchasing commission in the United States, headed by Sir Henry Self. Self was given overall responsibility for RAF production, research, and development, and also served with Sir Wilfrid Freeman, the Air Member for Development and Production. Self also sat on the British Air Council Subcommittee on Supply (or "Supply Committee"), and one of his tasks was to organize the manufacturing and supply of American fighter aircraft for the RAF. At the time, the choice was very limited, as no US aircraft then in production or flying met European standards, with only the Curtiss P-40 Tomahawk coming close. The Curtiss-Wright plant was running at capacity, so P-40s were in short supply. North American Aviation (NAA) was already supplying its T-6 Texan (known in British service as the "Harvard") trainer to the RAF, but was otherwise underused. NAA president "Dutch" Kindelberger approached Self to sell a new medium bomber, the North American B-25 Mitchell. Instead, Self asked if NAA could manufacture P-40s under license from Curtiss. Kindelberger said NAA could have a better aircraft with the same Allison V-1710 engine in the air sooner than establishing a production line for the P-40. John Attwood of NAA spent much time from January to April 1940 at the British Purchasing Commission's offices in New York discussing the British specifications of the proposed aircraft with British engineers. The discussions consisted of free-hand conceptual drawings of an aircraft with the British officials.
== Education == MD, 1996, School of Medicine, University of Ljubljana MS, 1998, School of Medicine, University of Ljubljana with thesis "Effects of chromium on blood pressure in humans" PhD, 2000, Diabetology School of Medicine, University of California, San Diego, with thesis Mechanism of glucose transport in insulin resistant 3T3-L1 adipocytes Post doctoral, 2005, Joslin Diabetes Clinic, Boston, study on insulin pump therapy in type 1 diabetic patients
The most commonly used nuclei are 1H and 13C, although isotopes of many other elements, such as 19F, 31P, and 29Si, can be studied by high-field NMR spectroscopy as well. In order to interact with the magnetic field in the spectrometer, the nucleus must have an intrinsic angular momentum and nuclear magnetic dipole moment. This occurs when an isotope has a nonzero nuclear spin, meaning an odd number of protons and/or neutrons (see Isotope). Nuclides with even numbers of both have a total spin of zero and are therefore not NMR-active. In its application to molecules the NMR effect can be observed only in the presence of a static magnetic field. However, in the ordered phases of magnetic materials, very large internal fields are produced at the nuclei of magnetic ions (and of close ligands), which allow NMR to be performed in zero applied field. Additionally, radio-frequency transitions of nuclear spin I > 1/2 with large enough electric quadrupolar coupling to the electric field gradient at the nucleus may also be excited in zero applied magnetic field (nuclear quadrupole resonance). In the dominant chemistry application, the use of higher fields improves the sensitivity of the method (signal-to-noise ratio scales approximately as the power of 3/2 with the magnetic field strength) and the spectral resolution. Commercial NMR spectrometers employing liquid helium cooled superconducting magnets with fields of up to 28 Tesla have been developed and are widely used.
Sources: en.wikipedia.org
It is a synthetic peptide based on a C-terminal fragment of human growth hormone. It is commonly referred to as hGH fragment 176-191 and is studied for metabolic effects rather than growth effects.
No. It represents only a short portion of the hGH sequence and lacks the full hormone's structure. As a result, its biological activity and regulatory status differ from those of prescription hGH.
The exact peptide is not typically described as a circulating hormone; it is a synthetic construct based on a natural sequence. Fragments of hGH can exist in laboratory or metabolic contexts, but AOD-9604 itself is manufactured for research.
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.