The short version of Research chemical fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2026-03-24. Anything still debated is marked as such rather than presented as settled.
Published studies have examined GW501516 in animal models of obesity, insulin resistance, and exercise endurance. Early human trials reportedly ended, and development was discontinued after preclinical findings raised concerns about cancer in some rodent studies. Regulatory agencies have not approved cardarine for any medical use. Its availability through non-pharmaceutical channels raises questions about identity, purity, and legal status that are separate from its laboratory pharmacology. Those questions are often addressed through analytical testing rather than assumptions about product labels.
Cardarine is a common name for GW501516, also GW-1516, a synthetic compound developed as a peroxisome proliferator-activated receptor delta (PPARδ) agonist. It belongs to a class of agents that modulate gene transcription related to lipid and energy metabolism. The compound was studied in preclinical and early clinical research for metabolic and cardiovascular conditions, but it did not progress to approved therapeutic use. Its name appears in fitness and sports contexts despite not being approved as a drug.
Preclinical research reported that GW501516 increased running endurance in mice and improved lipid profiles in some animal species. Early human trials explored effects on high-density lipoprotein cholesterol, triglycerides, and glucose handling, but the program was discontinued. Published human data are sparse and do not establish efficacy for any condition. Studies also examined PPAR delta in cancer biology, with conflicting findings across models. The relationship between receptor activation, tissue context, and disease risk remains an active area of investigation.
Anti-doping laboratories identify GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the usual matrix, and detection can occur after the parent compound has cleared from blood. The exact detection window depends on dose, formulation, individual metabolism, and assay sensitivity. Because the compound is prohibited at all times, athletes are subject to testing in and out of competition. Analytical methods continue to improve as new metabolites and designer analogs are characterized.
| Property | Value | Notes |
|---|---|---|
| Chemical class | PPARδ agonist | Not an anabolic steroid. |
| Common synonyms | GW501516, GW-1516 | Cardarine is an informal name. |
| Appearance | White to off-white powder | Typical for research-grade solid. |
| Solubility class | Poorly soluble in water; soluble in some organic solvents | Such as DMSO or ethanol in laboratory settings. |
| Typical storage temperature | Cool, dry, protected from light | Specific conditions vary by supplier and form. |
Regulatory bodies treat GW501516 as a prohibited substance in competitive sport. The World Anti-Doping Agency added it to the prohibited list, and it falls under classes covering metabolic modulators and hormone-related agents. It is not approved by drug regulators for human use, and it is not a lawful dietary supplement. Products sold under the cardarine name may contain unlisted ingredients or different compounds. Because no approved product exists, quality and identity are not guaranteed by pharmaceutical manufacturing standards.
Cardarine is a common name for the investigational chemical GW501516, also written GW-1516. It was developed as a peroxisome proliferator-activated receptor delta agonist for metabolic conditions such as dyslipidemia. Early research focused on lipid handling and energy use in skeletal muscle and other tissues. The compound was never approved as a medicine. In public discussion, it is often grouped with performance-enhancing substances, although its receptor target differs from that of anabolic steroids or selective androgen receptor modulators. Regulatory and health authorities have issued warnings about its use.
Handling and quality assessment of cardarine reference material follow general laboratory practices for poorly characterized compounds. It typically appears as a white to off-white powder and is sparingly soluble in water but soluble in organic solvents such as dimethyl sulfoxide and ethanol. Storage recommendations usually specify a cool, dry, dark place, with long-term storage at low temperature and desiccation. Purity may be checked by high-performance liquid chromatography with ultraviolet detection, while identity is confirmed by mass spectrometry and nuclear magnetic resonance. No pharmacopeial monograph exists, so reported purity and stability depend on the supplier’s methods.
GW501516 acts as a selective agonist at PPARδ, a nuclear receptor that regulates transcription of genes involved in lipid handling and energy metabolism. Activation of PPARδ in preclinical models increases fatty acid oxidation, mitochondrial biogenesis, and exercise endurance in rodents. These effects have made the compound a subject of metabolic research and also a target for sport anti-doping rules. In humans, however, controlled studies are limited, and whether similar endurance or metabolic changes occur at tolerated exposures remains an open question. The receptor’s broad tissue distribution also means downstream effects may vary by organ and condition.
Cardarine is frequently described as a fat-burning or endurance-enhancing supplement, but these claims exceed the available evidence. The compound is not a hormone, steroid, or selective androgen receptor modulator. Research articles discuss it as a tool compound for studying PPARδ biology, while anti-doping literature focuses on its abuse and detection. Quality of unapproved products is uncertain, and independent analyses have found impurities or incorrect labeling. Open questions include whether human cancer risk resembles that seen in rodents and how often non-athletes use the substance.
Cardarine has no approved therapeutic indication and is not marketed as a medicine. The World Anti-Doping Agency lists GW501516 as a prohibited substance at all times, covering both in-competition and out-of-competition periods. National laws vary: some countries treat it as an unapproved drug subject to import controls, while others have specific restrictions on sale for human consumption. It is often sold as a research chemical, a label that does not imply safety or legality. Enforcement actions have targeted online vendors and shipments.
Anti-doping laboratories identify GW501516 and related metabolites using liquid chromatography coupled with tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be analyzed. The method targets the parent compound and phase I and phase II metabolites, which extend the detection window. Because the substance is prohibited at all times, athletes can be tested outside competition. Detection limits and windows depend on the assay, sample type, and individual metabolism.
PPARδ is a nuclear receptor that regulates gene expression related to fatty acid oxidation, glucose homeostasis, and mitochondrial function. GW501516 binds to this receptor with high affinity and activates downstream signaling in skeletal muscle and other tissues. Animal studies reported increased endurance and altered fuel preference, but human data remain limited and inconsistent. The precise relationship between receptor activation and observed physiological changes is still an area of active investigation. Researchers have also examined whether the compound affects inflammation or cell proliferation. No approved therapeutic indication exists for cardarine.
In laboratory settings, cardarine is studied as a tool compound for probing PPARδ biology. Published experiments often use cell cultures, rodent models, or isolated tissues. Some investigations focus on metabolic effects, while others assess potential risks such as carcinogenicity observed in long-term animal studies. Because human trials are sparse, most knowledge comes from preclinical work and adverse event reports. Scientific literature frequently notes the gap between animal findings and human outcomes. The compound is not a dietary supplement and is not intended for human consumption.
Cardarine is a common name for GW501516, a synthetic compound developed in the 1990s through research collaborations involving GlaxoSmithKline. It belongs to a class of molecules known as peroxisome proliferator-activated receptor delta agonists. Early studies explored its effects on lipid metabolism and energy expenditure in animal models. The compound was never approved as a human medicine, and clinical development was discontinued. In the years since, it has appeared in fitness and bodybuilding communities as a performance-enhancing substance. Regulatory agencies classify it as an unapproved drug.
The more reversible the redox couple is, the more similar the oxidation peak will be in shape to the reduction peak. The difference in potential between when the maximum current is measured in the two directions is the redox potential. If the electron transfer at the working electrode surface is fast and the current is limited by the diffusion of analyte species to the electrode surface, then the peak current will be proportional to the square root of the scan rate. This relationship is described by the Randles–Sevcik equation. In this situation, the CV experiment only samples a small portion of the solution, i.e., the diffusion layer at the electrode surface.
Another common system uses Greek letter prefixes as locants, which is useful in identifying the relative location of carbon atoms as well as hydrogen atoms to other functional groups. The α-carbon (alpha-carbon) refers to the first carbon atom that attaches to a functional group, such as a carbonyl. The second carbon atom is called the β-carbon (beta-carbon), the third is the γ-carbon (gamma-carbon), and the naming system continues in alphabetical order. The nomenclature can also be applied to the hydrogen atoms attached to the carbon atoms. A hydrogen atom attached to an α-carbon is called an α-hydrogen, a hydrogen atom on the β-carbon is a β-hydrogen, and so on. Organic molecules with more than one functional group can be a source of confusion. Generally the functional group responsible for the name or type of the molecule is the 'reference' group for purposes of carbon-atom naming. For example, the molecules nitrostyrene and phenethylamine are quite similar; the former can even be reduced into the latter. However, nitrostyrene's α-carbon atom is adjacent to the phenyl group; in phenethylamine this same carbon atom is the β-carbon atom, as phenethylamine (being an amine rather than a styrene) counts its atoms from the opposite "end" of the molecule.
In the 1950s, the French established secret commando groups based on loyal Montagnard ethnic minorities referred to as "partisans" or "maquisards", called the Groupement de Commandos Mixtes Aéroportés (Composite Airborne Commando Group or GCMA), later renamed Groupement Mixte d'Intervention (GMI, or Mixed Intervention Group), directed by the SDECE counter-intelligence service. The SDECE's "Service Action" GCMA used both commando and guerrilla techniques and operated in intelligence and secret missions from 1950 to 1955. Declassified information about the GCMA includes the name of its commander, famous Colonel Roger Trinquier, and a mission on April 30, 1954, when Jedburgh veteran Captain Sassi led the Meo partisans of the GCMA Malo-Servan in Operation Condor during the siege of Dien Bien Phu. In 1951, Adjutant-Chief Vandenberghe from the 6th Colonial Infantry Regiment (6e RIC) created the "Commando Vanden" (aka "Black Tigers", aka "North Vietnam Commando #24") based in Nam Định. Recruits were volunteers from the Thổ people, Nùng people and Miao people. This commando unit wore Việt Minh black uniforms to confuse the enemy and used techniques of the experienced Bo doi (Bộ đội, regular army) and Du Kich (guerrilla unit). Việt Minh prisoners were recruited in POW camps. The commando was awarded the Croix de Guerre des TOE with palm in July 1951; however, Vandenberghe was betrayed by a Việt Minh recruit, commander Nguien Tinh Khoi (308th Division's 56th Regiment), who assassinated him (and his Vietnamese fiancée) with external help on the night of January 5, 1952.
=== Free-interface diffusion === This technique brings together protein and precipitation solutions without premixing them, but instead, injecting them through either sides of a channel, allowing equilibrium through diffusion. The two solutions come into contact in a reagent chamber, both at their maximum concentrations, initiating spontaneous nucleation. As the system comes into equilibrium, the level of supersaturation decreases, favouring crystal growth.
Sources: en.wikipedia.org
=== Utah === On March 13, 2024, Utah Governor Spencer Cox signed the Artificial Intelligence Policy Act (S.B 149). This legislation went into effect on May 1, 2024. It established liability, notably for companies that do not disclose their use of generative AI when required by state consumer protection laws, or when users commit criminal offense using generative AI. It also created the Office of Artificial Intelligence Policy and the Artificial Intelligence Learning Laboratory Program.
The first advances in wound care in this era began with the work of Ignaz Philipp Semmelweis, a Hungarian obstetrician who discovered how hand washing and cleanliness in general in medical procedures prevents maternal deaths. Semmelweis's work was furthered by an English surgeon, Joseph Lister, who in 1860s began treating his surgical gauze with carbolic acid, known today as phenol, and subsequently dropped his surgical team's mortality rate by 45%. Building on the success of Lister's pretreated surgical gauze, Robert Wood Johnson I, co-founder of Johnson & Johnson, began in the 1890s producing gauze and wound dressings sterilized with dry heat, steam, and pressure. These innovations in wound-site dressings marked the first major steps forward in the field since the advances of the Egyptians and Greeks centuries earlier. In 1886, Ernst von Bergmann introduced heat sterilization of surgical instruments, which marked the beginning of aseptic surgery and significantly reduced the frequency of infections. Conrad Brunner did extensive research into wound management and experimentation with wound disinfection methods, publishing his comprehensive Erfahrungen und Studien über Wundinfektion und Wundbehandlung in 1898. That same year, Paul Leopold Friedrich introduced wound excision and experimentally showed that excision of open wounds substantially reduced the risk of infection. The next advances would arise from the development of polymer synthetics for wound dressings and the "rediscovery" of moist wound-site care protocols in the mid 20th century.
==== Extrusion-based printing ==== Although there are different approaches to extrusion based printing, these approaches follow the same basic procedures. The platform on which food is printed consists of a standard 3-axis stage with a computer controlled extrusion head. This extrusion head pushes food materials through a nozzle typically by way of compressed air or squeezing. The nozzles can vary with respect to what type of food is being extruded or the desired printing speed (typically the smaller the nozzle the longer the food printing will take). As the food is printed, the extrusion head moves along the 3-axis stage printing the desired food. Some printed food requires additional processing such as baking or frying before consumption. Extrusion based food printers can be purchased for household use, are typically compact in size, and have a low maintenance cost. Comparatively, extrusion based printing provides the user with more material choices. However, these food materials are usually soft, and as a result, makes printing complex food structures difficult. In addition, long fabrication times and deformations due to temperature fluctuations with additional baking or frying require further research and development to overcome.
Especially the Danes developed a thriving livestock breeding industry, driving large herds along the Hærvejen to sell on the continent. This trade gave the route its alternative names, such as "Studevejen" (Cattle Way) in Danish and "Ochsenweg" (Oxen Way) in German. Therefore control of the Danevirke, through which the Hærvejen ran, was of immense financial significance. Whoever controlled the gates of Danevirke also controlled the trade along the Hærvejen, giving them access to substantial wealth.
As with most medical evaluation and diagnosis, history and physical examination are vital to making an accurate diagnosis. Radiographic evaluation is the gold standard to diagnosing a fracture and creating a treatment plan. If there is concern for fracture extension into the joint that is not adequately visualized on radiographs, a Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) should be considered. MRI is especially useful to classify or grade degree of condral damage. Advanced imaging, CT or MRI is a common modality for surgical planning.
Sources: en.wikipedia.org
=== Pharmacodynamics === Vosilasarm is selective androgen receptor modulator (SARM), or a tissue-selective mixed agonist or partial agonist of the androgen receptor (AR). This receptor is the biological target of endogenous androgens like testosterone and dihydrotestosterone (DHT) and of synthetic anabolic steroids like nandrolone and oxandrolone. Vosilasarm shows high affinity for the AR, with a Ki value of 7 nM (relative to 29 nM for testosterone and 10 nM for DHT). It shows good selectivity for the AR over other steroid hormone receptors, with the closest off-target receptor being the progesterone receptor (IC50 = 750 nM versus 0.2 nM for progesterone). Vosilasarm also shows potent efficacy in terms of AR activation, with an EC50 value of 0.1 nM in the C2C12 osteoblast differentiation assay. The AR is widely expressed in tissues throughout the body, including in the prostate gland, seminal vesicles, genitals, gonads, skin, hair follicles, muscle, bone, heart, adrenal cortex, liver, kidneys, and brain, among others. Vosilasarm has been found to have varying full agonist and partial agonist AR-mediated effects in different tissues, including potent agonistic and anabolic activity in muscle and bone, potent agonistic effects in AR-expressing human breast cancer cell lines, and partial agonist or antagonist activity in the prostate gland and seminal vesicles.
In 2012, a laser engraved panel featuring Wheatley was launched aboard the Japan Aerospace Exploration Agency (JAXA)'s Kounotori 3 mission on its way to resupply the International Space Station. In April 2011, series of Portal-themed DLC levels were added to the game The Ball. A few Portal characters, including Chell and P-Body, feature as avatar customization items in the game Fall Guys for 5 crowns each. The portal gun is one of several weapons used alongside ones from other game and film franchises in a climactic fight for the 2021 film Free Guy which takes place within a video game. A reference to GLaDOS appears in a sub-quest in Cyberpunk 2077 as a murderous AI driving a taxi and eventually tries to kill the protagonist. In 2022, GEICO released a commercial entitled "The Gecko Visits Portal", featuring elements from the Portal games such as an unreleased test chamber shown in trailers for Portal 2, with McLain reprising her role as GLaDOS. Rocket League released free DLC that includes a variety of items from the Portal series available for vehicle customization. Evil Genius 2: World Domination includes a free Portal themed expansion pack which adds Portal-themed rooms and traps to the game. Escape Simulator features a free Portal Escape Chamber DLC in which players will need to escape from the Aperture Science Laboratories by solving various puzzles.
=== Via neopinone === If the enol ether in thebaine is converted to a ketone by thebaine 6-O-demethylase, a methyl group leaves as formaldehyde, with the oxidation driven by molecular oxygen activated as a ferryl group Fe(IV)=O.
A section of the report pertaining to the internal functioning of the S&D Group was held over until September 2023 to allow for a discussion of its findings with the S&D Bureau prior to its publication.
== Further reading == Bethe, H. A. (1939). "Energy Production in Stars". Physical Review. 55 (5): 434–56. Bibcode:1939PhRv...55..434B. doi:10.1103/PhysRev.55.434. PMID 17835673. Iben, I. (1967). "Stellar Evolution Within and off the Main Sequence". Annual Review of Astronomy and Astrophysics. 5: 571–626. Bibcode:1967ARA&A...5..571I. doi:10.1146/annurev.aa.05.090167.003035.
Sources: en.wikipedia.org
Cardarine is commonly known as GW501516 or GW-1516. These names refer to the same synthetic compound. It is not a brand-name approved medicine.
No, cardarine is not a steroid. It is classified as a PPARδ agonist. Its structure and receptor target differ from anabolic steroids.
No regulatory agency has approved cardarine as a medicine. It was investigated in early research but development was discontinued. It is not available as a prescription drug.
It binds to and activates PPAR delta, a nuclear receptor that controls expression of genes related to fatty acid oxidation. This mechanism can alter energy metabolism in animal models. It is not a direct stimulant or fat-burning enzyme.