This is a working overview of Prohibited list, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2026-03-15. Anything still debated is marked as such rather than presented as settled.
Published literature on cardarine includes in vitro assays, rodent experiments, and a small number of human studies. Reports describe effects on exercise capacity and lipid metabolism in animals, while human evidence is sparse. Many online descriptions present the compound as a proven endurance aid, a claim not supported by regulatory approval or large clinical trials. Analytical studies focus on identifying the parent compound and its metabolites in biological samples. Important uncertainties include species differences, dose-response relationships, and the relevance of rodent tumor findings to humans.
Cardarine is the common name for GW501516, a synthetic compound studied as a peroxisome proliferator-activated receptor delta agonist. Researchers developed it to explore treatments for lipid disorders and metabolic conditions. It is not an approved medicine in any country. Early clinical work examined changes in HDL cholesterol and triglycerides, but development was discontinued after animal studies raised concerns about cancer. The compound remains available as a research chemical and appears in discussions of performance enhancement.
At the molecular level, GW501516 binds and activates PPARδ, a nuclear receptor that regulates transcription. Activation shifts expression of genes involved in fatty acid oxidation, energy expenditure, and lipid transport in skeletal muscle and liver. Animal studies report increased endurance and altered lipid profiles after exposure. Human data are limited to small trials and do not establish long-term safety or efficacy. PPARδ also has roles in cell proliferation, so the relationship between activation and cancer risk remains an open question.
Activation of PPARδ changes transcription of genes involved in fatty acid transport, mitochondrial function, and skeletal muscle fuel preference. In rodent studies, pharmacological PPARδ activation was associated with increased endurance and altered body composition. These findings generated interest in performance enhancement, but species differences and study designs limit direct extrapolation to humans. Small human trials were conducted in the 2000s and later discontinued. The extent to which cardarine produces similar metabolic or performance effects in people remains an open question.
The compound is typically described as a laboratory compound rather than a therapeutic product. Published reports have explored its role in lipid disorders, insulin sensitivity, and exercise metabolism, yet no major drug regulator has approved it for medical use. Commercial samples sold under the cardarine name may vary in purity and identity. Analytical confirmation is therefore necessary when the material is discussed in scientific or regulatory contexts. Its classification as a prohibited substance in sport further shapes how it is studied and reported.
Cardarine is a common name for GW501516, a synthetic compound studied for its effects on lipid and glucose metabolism. It functions as an agonist at peroxisome proliferator-activated receptor delta, or PPARδ, a nuclear receptor that influences gene expression. The molecule is not a steroid, nor is it a selective androgen receptor modulator. It is also known in research and sports literature as GW-501516 and endurobol. Early laboratory work examined its metabolic activity in cell cultures and animal models.
| Property | Value | Notes |
|---|---|---|
| Common name | Cardarine | Also called GW501516 and endurobol. |
| Chemical formula | C21H18F3NO3S2 | Molecular weight about 453.5 g/mol. |
| Appearance | White to off-white solid | Form depends on synthesis and purity. |
| Solubility | Soluble in DMSO and ethanol | Low solubility in water. |
| Typical storage | -20 °C, desiccated, protected from light | Common for research chemicals. |
Cardarine is explicitly prohibited by the World Anti-Doping Agency under the class of PPARδ agonists. Its presence in urine or blood samples can be detected using mass spectrometry-based methods, often liquid chromatography-tandem mass spectrometry. Athletes who test positive may face sanctions, including bans from competition. The compound is also regulated as a prescription-only or unapproved drug in many countries. Enforcement varies by jurisdiction, and some regions treat it as a controlled substance. Online sales may occur despite these restrictions, creating quality and legal risks.
Laboratory detection of cardarine typically involves sample preparation followed by chromatographic separation and mass spectrometric identification. Urine is the most common matrix for anti-doping tests, though blood and hair have also been explored. Methods can target the parent compound or its metabolites, depending on the expected window of detection. Reference standards are required for accurate quantification. Matrix effects and dilution can influence results, so laboratories use internal standards and validation protocols. The exact detection window varies with dose, route, and individual metabolism.
GW501516 acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in transcription of genes related to lipid handling and energy use. Activation of PPARδ can shift skeletal muscle toward greater fatty acid oxidation in animal models, which is one reason it drew interest for metabolic disease and exercise research. The exact downstream effects depend on tissue, species, dose, and duration. Human data are sparse, so many proposed benefits remain hypotheses rather than established clinical outcomes.
Laboratory studies have examined GW501516 in cell cultures and rodents for conditions such as dyslipidemia, insulin resistance, and obesity. Some trials in humans were initiated, but development was discontinued after preclinical findings raised concerns about cancer in certain models. Those findings do not prove that the compound causes cancer in people, but they contributed to regulatory caution. Later reviews often describe the evidence as preliminary and insufficient for assessing long-term safety.
In the fitness and bodybuilding literature, cardarine is frequently discussed as an endurance agent or fat-loss compound, although such claims are not supported by robust clinical evidence. Online descriptions often mix animal data, user anecdotes, and marketing language. Researchers who study PPARδ agonists distinguish between receptor activation in controlled experiments and unsupervised use of unverified products. The latter introduces unknown purity, dose, and interactions, making reported experiences difficult to interpret scientifically.
Early clinical research explored GW501516 for lipid disorders, obesity, and diabetes. Some short-term human studies reported changes in HDL cholesterol, LDL cholesterol, and triglycerides. The development program was discontinued after rodent studies showed dose-dependent tumor formation in multiple tissues, including liver, bladder, stomach, and skin. These findings raised concerns about long-term cancer risk in humans. Because human exposure data are limited, the clinical significance of the rodent tumors remains uncertain.
Literature on cardarine often separates receptor pharmacology from toxicology. Mechanistic papers describe PPARδ activation and gene expression changes, while safety assessments focus on carcinogenicity and species differences. Questions remain about whether rodent tumors arise through PPARδ-dependent or off-target mechanisms. Another open area is how human metabolism and exposure compare with those in animal studies. Analytical methods such as liquid chromatography–mass spectrometry are used to confirm identity in biological and product samples.
Detection of myositis-specific autoantibodies (MSAs), including anti-Mi-2, anti-NXP2, anti-TIF1-γ, anti-MDA5, and anti-SAE. These autoantibodies are considered pathogenic and are typically mutually exclusive, with most patients harboring only a single MSA. Muscle weakness in both thighs or both upper arms. Using a blood test, finding higher levels of enzymes found in skeletal muscle, including creatine kinase, aldolase, and glutamate oxaloacetate, pyruvate transaminases or lactate dehydrogenase. Using electromyography (testing of electric signalling in muscles), finding all three of: erratic, repetitive, high-frequency signals; short, low-energy signals between skeletal muscles and motor neurons that have multiple phases; and sharp activity when a needle is inserted into the muscle. Examining a muscle biopsy under a microscope demonstrating perifascicular atrophy, increased expression of type I interferon–inducible markers (predominantly in the perifascicular regions), mononuclear white blood cells between the muscle cells, and finding abnormal muscle cell degeneration and regeneration, dying muscle cells, and muscle cells being consumed by other cells (phagocytosis). Rashes typical of dermatomyositis, which include heliotrope rash, Gottron's sign, and Gottron's papules. The fifth criterion is what differentiates dermatomyositis from other forms of inflammatory myopathy. Patients with antisynthetase autoantibodies, such as anti-Jo-1, may also present with dermatomyositis-like skin manifestations.
=== Urban soils === The British Geological Survey reported the amount and distribution of PAH compounds including parent and alkylated forms in urban soils at 76 locations in Greater London. The study showed that parent (16 PAH) content ranged from 4 to 67 mg/kg (dry soil weight) and an average PAH concentration of 18 mg/kg (dry soil weight) whereas the total PAH content (33 PAH) ranged from 6 to 88 mg/kg and fluoranthene and pyrene were generally the most abundant PAHs. Benzo[a]pyrene (BaP), the most toxic of the parent PAHs, is widely considered a key marker PAH for environmental assessments; the normal background concentration of BaP in the London urban sites was 6.9 mg/kg (dry soil weight). London soils contained more stable four- to six-ringed PAHs which were indicative of combustion and pyrolytic sources, such as coal and oil burning and traffic-sourced particulates. However, the overall distribution also suggested that the PAHs in London soils had undergone weathering and been modified by a variety of pre-and post-depositional processes such as volatilization and microbial biodegradation.
On 18 July, amid the large-scale attack by Bedouin fighters on Suwayda Governorate and reports of them entering Suwayda city, backed by fighters from the neighboring Daraa Governorate and other governorates in Syria, Hikmat al-Hijri reportedly demanded the Syrian government to send a conflict resolution force. Reports later circulated that Syrian government forces were preparing to redeploy in the city of Suwayda, following renewed clashes between Druze factions and Bedouin tribes. While an Israeli government related source said that Israel had agreed to a time-limited entry into Suwayda by Syrian government forces, the Syrian Interior Ministry denied that it was preparing to re-enter the city. On 19 July, the Syrian government declared a ceasefire which was approved by the Druze leadership and Bedouin tribes. They arrived at the city of Suwayda but are having difficulty implementing the ceasefire. Fierce street fighting was documented in the city of Suwayda between Bedouins and Druze. AFP, which had teams on the ground, reported that the Bedouin militants had managed to break through the Druze defenses and penetrate the west of the city. An AFP correspondent in Suwayda reported seeing dozens of houses and cars set on fire, and gunmen setting shops on fire after looting them. On 20 July, clashes were reported after the ceasefire in the towns of Al-Ariqah, Rimah, Hazem and Shahba, after an attack by tribal militias, especially in Al-Ariqah after the entry of tribal fighters with the help of General Security Service.
Theranos claimed to have data verifying the accuracy and reliability of its tests that would be published. In February 2016, Theranos announced that it would permit the Cleveland Clinic to complete a validation study of its technology. In March 2016, a study authored by 13 scientists appeared in the Journal of Clinical Investigation, where it was stated that the company's blood test results were flagged "outside their normal range 1.6× more often than other testing services", that 68 percent of lab measurements evaluated "showed significant interservice variability", and that "lipid panel test results between Theranos and other clinical services" were "nonequivalent". In August 2016, the company introduced a new robotic capillary blood testing unit named "miniLab" at the 2016 annual meeting of the American Association for Clinical Chemistry, but did not present any data supporting the claimed abilities of the device. The miniLab was allegedly capable of carrying out a range of tests from a small amount of blood. After Theranos failed to address concerns that it exaggerated the capabilities of the miniLab, Walgreens withdrew from their partnership. It was later revealed that Theranos had voided two years of test results showing inaccuracies with the Edison technology.
Sources: en.wikipedia.org
== Importance == D. dadantii has been associated with bacterial soft rot diseases of a majority of foliage plants, numerous flowering plants and many vegetables. It is a major pathogen for many economic crops such as potatoes, banana and pineapple in addition to ornamental house plants. It causes blackleg of potato. In addition to the pathogen having important negative consequences, D. dadantii is being used for its positive contributions. Most noble of its contributions is an enzyme, asparaginase, being used in conjunction with other chemotherapeutic agents for treatment of acute lymphoblastic leukemia (ALL) and non-Hodgkin's lymphoma in patients who have had allergic reactions to E. coli derived asparaginase Elspar or pegaspargase (Oncaspar). Secondly, with a strong governmental push towards increasing renewable fuel resources, D. dadantii is being studied for its utilization in ethanol fuel production and its ability to ferment and break down cell walls and pectins as an alternative to E. coli. Although not as effective as D. dadantii, some genes from D. dadantii were added to E. coli through genetic engineering to allow for pectin degradation by E. coli.
=== Other methods === Burning sulfur together with saltpeter (potassium nitrate, KNO3), in the presence of steam, has been used historically. As saltpeter decomposes, it oxidizes the sulfur to SO3, which combines with water to produce sulfuric acid. Prior to 1900, most sulfuric acid was manufactured by the lead chamber process. As late as 1940, up to 50% of sulfuric acid manufactured in the United States was produced by chamber process plants. A wide variety of laboratory syntheses are known, and typically begin from sulfur dioxide or an equivalent salt. In the metabisulfite method, hydrochloric acid reacts with metabisulfite to produce sulfur dioxide vapors. The gas is bubbled through nitric acid, which will release brown/red vapors of nitrogen dioxide as the reaction proceeds. The completion of the reaction is indicated by the ceasing of the fumes. This method conveniently does not produce an inseparable mist.
The International Rice Research Institute and the International Maize and Wheat Improvement Center are part of a consortium of agricultural research organizations known as CGIAR. Costing around $600 million, over 50 years, the revolution brought new farming technology, increased productivity, expanded crop yields and mass fertilization to many countries throughout the world. Later it funded over $100 million of plant biotechnology research and trained over four hundred scientists from Asia, Africa and Latin America. It also invested in the production of transgenic crops, including rice and maize. In 1999, the then president Gordon Conway addressed the Monsanto Company board of directors, warning of the possible social and environmental dangers of this biotechnology, and requesting them to disavow the use of so-called terminator genes; the company later complied. In the 1990s, the foundation shifted its agriculture work and emphasis to Africa; in 2006, it joined with the Bill & Melinda Gates Foundation in a $150 million effort to fight hunger in the continent through improved agricultural productivity. In an interview marking the 100 year anniversary of the Rockefeller Foundation, Judith Rodin explained to This Is Africa that Rockefeller has been involved in Africa since their beginning in three main areas – health, agriculture and education, though agriculture has been and continues to be their largest investment in Africa.
Sources: en.wikipedia.org
== See also == Ocean dynamical thermostat – Physical mechanism affecting sea surface temperatures in the Pacific Ocean Recharge oscillator – Theory of sea surface temperature Super El Niño – Global climate phenomenonPages displaying short descriptions of redirect targets
== Creation and yield == The fissile isotope uranium-235 fuels most nuclear reactors. When 235U absorbs a thermal neutron, one of two processes can occur. About 85.5% of the time, it will fission; about 14.5% of the time, it will not fission, instead emitting gamma radiation and yielding 236U. Thus, the yield of 236U per 235U+n reaction is about 14.5%, and the yield of fission products is about 85.5%. In comparison, the yields of the most abundant individual fission products like caesium-137, strontium-90, and technetium-99 are between 6% and 7%, and the combined yield of medium-lived (10 years and up) and long-lived fission products is about 32%, or a few percent less as some are transmuted by neutron capture. The second-most used fissile isotope plutonium-239 can similarly fission or not on absorbing a thermal neutron, the latter giving plutonium-240, a major component of reactor-grade plutonium (plutonium recycled from spent fuel that was originally made with enriched natural uranium and then used once in an LWR). 240Pu decays with a half-life of 6561 years into 236U. In a closed nuclear fuel cycle, most 240Pu will fission (possibly after more than one neutron capture) before it decays, but 240Pu discarded as nuclear waste will decay over thousands of years. As 240Pu has a shorter half-life than 239Pu, the grade of any sample of plutonium mostly composed of those two isotopes will slowly increase, while the total amount of plutonium in the sample will slowly decrease over centuries and millennia.
In November 2013, the FDA lifted its earlier restrictions on rosiglitazone after reviewing the results of the 2009 RECORD clinical trial (a six-year, open-label randomized control trial), which failed to show elevated risk of heart attack or death associated with the medication.
Sources: en.wikipedia.org
Cardarine is a common name for the investigational compound GW501516. It acts as a PPARδ agonist and is not approved for human use. It is prohibited in sport.
It activates PPARδ, a nuclear receptor that influences gene expression related to lipid and energy metabolism. Animal studies show changes in endurance and lipid levels. Human effects and risks are not well established.
No, cardarine is not a steroid. It belongs to a different chemical class, the PPARδ agonists. It is also not a selective androgen receptor modulator.
Cardarine is a common name for GW501516, a synthetic PPARδ agonist. It is not a steroid or a selective androgen receptor modulator. It was developed and studied as a research compound for metabolic pathways.