The short version of AOD-9604 fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2025-12-03 and is reviewed periodically as new material appears.
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.
Quality varies among research-grade suppliers, so certificates of analysis and independent testing are important for verification. A typical certificate reports purity by HPLC, identity by mass spectrometry, appearance, and sometimes residual solvents or water content. AOD9604 is often sold as a research chemical not intended for human consumption, and labels can be inaccurate. Common misconceptions include treating the peptide as a form of growth hormone, assuming supplement status, or expecting approved-drug quality from unregulated products.
AOD-9604 is a synthetic peptide whose sequence matches the C-terminal fragment of human growth hormone, specifically residues 176 through 191. This region differs from the full hormone in its receptor interactions. The peptide is not a growth hormone secretagogue and does not bind the growth hormone receptor in the same manner. Researchers have examined it for effects on lipid metabolism, but its exact pharmacological profile remains an active area of study.
Development of AOD-9604 began in the 1990s as scientists sought to isolate metabolic effects of growth hormone without its growth-promoting actions. Early laboratory work focused on fat cells and animal models. Several human trials followed, examining changes in body composition and fat mass. Results have been mixed, and the peptide has not progressed to widespread clinical approval. Interest continues in research settings, particularly regarding its mechanism and potential metabolic targets.
Regulatory status varies by country. In the United States, AOD-9604 is not approved as a prescription drug. It is sometimes sold as a research chemical or dietary supplement, though such marketing may fall outside legal frameworks. The World Anti-Doping Agency prohibits its use in sport. Researchers must obtain it through legitimate suppliers and follow institutional rules. Its legal classification continues to evolve as authorities increasingly assess peptide products more broadly.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white powder | Lyophilized form; visual inspection |
| Solubility | Soluble in water and aqueous buffers | Depends on pH, purity, and counterion |
| Typical storage | -20 °C or below, desiccated | Protect from light; avoid repeated freeze-thaw after reconstitution |
| Common analytical method | Reversed-phase HPLC and mass spectrometry | Purity by HPLC; identity and mass by LC-MS or MALDI-TOF |
| Common synonyms | hGH fragment 176–191; AOD-9604 | Names vary in research and product labeling |
Analytical characterization of AOD-9604 typically employs reversed-phase high-performance liquid chromatography (RP-HPLC) to assess purity and identity. Mass spectrometry provides confirmation of molecular mass, while amino acid analysis can verify composition. These methods are standard for peptide research chemicals. Because the peptide lacks a distinct chromophore, detection often relies on ultraviolet absorbance at 214 nm or mass spectrometric response. Laboratories may also use capillary electrophoresis for separation. For example, size-exclusion chromatography can detect aggregates.
Stability of AOD-9604 depends on storage conditions. Lyophilized powder is generally more stable than reconstituted solution. Recommended storage is typically at -20°C or lower, protected from light and moisture. Repeated freeze-thaw cycles can cause aggregation or degradation. In solution, the peptide may be susceptible to hydrolysis or oxidation, so aliquoting and cold storage are common practices. Researchers often add stabilizers such as mannitol or trehalose during lyophilization to improve shelf life.
Regulatory status: AOD-9604 is not approved as a therapeutic drug in the United States, European Union, or other major markets. It is listed by the World Anti-Doping Agency as a prohibited substance in sport, specifically under growth hormone fragments. Many jurisdictions restrict its sale for human consumption. Products marketed online may not meet pharmaceutical quality standards. The legal status varies by country and often depends on whether the material is presented as a research chemical, supplement, or drug.
Detection and characterization of AOD-9604 in research and anti-doping settings typically rely on mass spectrometry coupled with liquid chromatography. These methods can identify the peptide by its mass and fragmentation pattern. Immunoassays may also be used in some screening contexts, but they can cross-react with related peptides. Because the molecule is small and may be present at low concentrations, sample preparation and method validation are important. Confirmatory analysis usually requires comparison with a certified reference standard.
== Domestic impact == Psychiatrist Thomas Szasz wrote in 1997, "Over the past thirty years, we have replaced the medical-political persecution of illegal sex users ('perverts' and 'psychopaths') with the even more ferocious medical-political persecution of illegal drug users." Assessing from a health perspective, a study in the Annals of Medicine noted: "The U.S. war on drugs has subjected millions to criminalization, incarceration, and lifelong criminal records, disrupting or altogether eliminating their access to adequate resources and supports to live healthy lives."
Targeted mass spectrometry is a mass spectrometry technique that uses multiple stages of tandem mass spectrometry (MSn with n=2 or 3) for ions of specific mass (m/z), at specific time. The values of the m/z and time are defined in an inclusion list which is derived from a previous analysis.
Railex was a refrigerated rail service and third-party logistics provider that transported fruits, vegetables and other temperature sensitive cargo across the United States, in partnership with CSX and Union Pacific. In 2006, Railex launched service between Wallula, Washington, and Rotterdam, New York, followed in 2008 by a Delano, California to NY lane. Railex ran unit trains of 55 large, "plate F" refrigerated cars and promised regularly scheduled departures and arrivals on a five-day service schedule. It claimed reduced carbon emissions when compared to conventional trucking. In June 2014, Railex opened a new facility in Jacksonville, Florida, with service from the west coast. In 2017, Union Pacific acquired Railex's cold storage facilities and terminals at Delano, California, Wallula, Washington, and Rotterdam, New York (but not its wine unit, Railex Wine Services LLC, now known as Northwest Wine Services). In May 2020, Union Pacific discontinued both services. Railex's system was based on palletized cargo, which was loaded and unloaded indoors in temperature controlled docks that preserved a cold chain for the cargo. It also provided warehousing and could handle less-than-truckload shipments.
Sources: en.wikipedia.org
=== N05AB Phenothiazines with piperazine structure === N05AB01 Dixyrazine N05AB02 Fluphenazine N05AB03 Perphenazine N05AB04 Prochlorperazine N05AB05 Thiopropazate N05AB06 Trifluoperazine N05AB07 Acetophenazine N05AB08 Thioproperazine N05AB09 Butaperazine N05AB10 Perazine N05AB13 Metofenazate
Induces endometrial secretory transformation in preparation for pregnancy (>5 ng/mL) Prevents estrogen-induced endometrial hyperplasia and increased endometrial cancer risk Maintains pregnancy via effects in endometrium (with withdrawal resulting in miscarriage) Reduces amount and fibrosity of cervical mucus and causes cervix to become firmer and more tightly closed Controls motility and composition of fluid in the fallopian tubes Reduced cornification and maturation of the vaginal lining Causes water retention in the breasts resulting in temporary enlargement during the menstrual cycle Mediates lobuloalveolar development of the breasts necessary for lactation Suppresses lactation initiation and triggers lactation upon withdrawal (as with parturition) Maintains skin health, integrity, appearance, and hydration and slows the rate of aging of the skin Modulates brain function, with effects on mood, emotionality, and sexuality, as well as cognition and memory Exerts negative feedback on the hypothalamic–pituitary–gonadal axis (HPG axis) by suppressing the secretion of the gonadotropins FSH and LH from the pituitary gland (including the mid-cycle gonadotropin surge), thereby inhibiting gonadal sex hormone production as well as ovulation and fertility (>2 ng/mL) Increases basal body temperature (by 0.3–0.6 °C (0.5–1.0 °F) relative to preovulation) via the hypothalamus (>4 ng/mL) Reduces hot flashes via the hypothalamus Stimulates respiration via the hypothalamus and/or respiratory center Influences the risk and/or progression of hormone-sensitive cancers including breast cancer and endometrial cancer Many of the effects of progesterone require estrogen, as estrogens prime tissues for progesterone by inducing expression of the PRs. The PRs are induced in the breasts by estrogens, and for this reason, it is assumed that progestogens cannot mediate breast changes in the absence of estrogens. Progesterone also lowers blood pressure and reduces water and salt retention among other effects via its antimineralocorticoid activity. Progesterone can produce sedative, hypnotic, anxiolytic, euphoric, cognitive-, memory-, and motor-impairing, anticonvulsant, and even anesthetic effects via formation of sufficiently high concentrations of its neurosteroid metabolites and consequent GABAA receptor potentiation in the brain.
September 16 – Inspiration4, launched by SpaceX, becomes the first all-civilian spaceflight, carrying a four-person crew on a three-day orbit of the Earth. September 20 Trump Organization CFO Allen Weisselberg makes an appearance at the New York Supreme Court as prosecutors continue their investigation into former President Trump's business dealings. The death toll from the COVID-19 pandemic surpasses that of the 1918 Spanish flu pandemic, becoming the deadliest disease outbreak in American history. September 21 President Biden delivers his first speech at the United Nations General Assembly. Michigan Governor Gretchen Whitmer announces that Michigan will build an electrified road to charge electric vehicles, becoming the first U.S. state to do so. September 22 – COVID-19 pandemic – Michigan surpasses one million confirmed cases of COVID-19. September 23 A man shoots 13 people then kills himself in Collierville, Tennessee. 2020 United States presidential election in Arizona: A months-long recount of 2.1 million ballots cast in Maricopa County, Arizona, confirms in a draft report that Joe Biden won that state's 11 electoral votes, with no mass voter fraud designed to "steal" the election from former President Donald Trump. Aftermath of the January 6 United States Capitol attack: – The January 6 House Committee issues its first subpoenas, which mandate that four advisors and associates to former President Donald Trump turn over records and testimony.
Sources: en.wikipedia.org
Lyophilized AOD9604 is generally kept at -20 °C or colder, desiccated, and protected from light. Reconstituted solutions are usually refrigerated and handled to minimize repeated freeze-thaw cycles. These are general laboratory handling practices, not instructions for human use.
Mass spectrometry, such as LC-MS or MALDI-TOF, confirms the molecular mass and can reveal sequence-related impurities. Reversed-phase HPLC is used for purity, and peptide mapping or amino acid analysis can support sequence identity. No single method establishes every quality attribute.
No. AOD9604 is a short synthetic fragment of the hGH sequence, not the full 191-amino-acid hormone. It lacks the regions that mediate hGH receptor activation and growth-promoting effects. Products labeled as AOD9604 should not be assumed to have the same properties as hGH.
AOD-9604 is a synthetic peptide fragment of human growth hormone, corresponding to amino acids 176-191. It is studied for potential effects on fat metabolism, but it is not approved as a drug in most countries. Its exact mechanism remains under investigation.