Research chemical raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
This page was last updated on 2026-04-16 and is reviewed periodically as new material appears.
Regulatory treatment of cardarine differs by context and jurisdiction. In competitive sport, the World Anti-Doping Agency lists PPARδ agonists, including GW501516, as prohibited at all times. Outside sport, it lacks approval as a prescription medicine in major drug markets, and products sold for human consumption may be treated as unapproved drugs. Some countries also restrict importation or sale through general consumer protection and medicines laws. These classifications affect availability, testing, and legal risk without establishing therapeutic value.
Because cardarine is not an approved medicine, no pharmacopeial monograph defines its identity, purity, or storage requirements. Laboratories typically rely on in-house methods and reference standards when testing materials labeled as GW501516. Certificates of analysis may report purity and identity for a specific batch, but their scope varies and they do not guarantee safety or legal status. Independent verification can include high-performance liquid chromatography, mass spectrometry, nuclear magnetic resonance, and elemental analysis. The distinction between research chemical labeling and human use is significant because quality standards and oversight differ.
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.
| Property | Value | Notes |
|---|---|---|
| WADA classification | S4 Hormone and Metabolic Modulators | Prohibited at all times in sport. |
| Drug approval status | Not approved in major jurisdictions | No accepted therapeutic indication. |
| Common detection method | LC-MS/MS | Detects parent compound and metabolites. |
| Typical test matrix | Urine or blood | Urine is common in anti-doping testing. |
| Product labeling | Research chemical or supplement | Often not independently verified. |
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.
Products sold as cardarine have been found to contain incorrect compounds, variable amounts, or no active ingredient at all. Independent testing is required to verify identity and purity. Common analytical approaches include high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance for structural confirmation. These methods can distinguish GW501516 from related PPAR agonists and from unrelated steroids. For regulators and researchers, such verification is central to interpreting both biological results and adverse event reports.
Cardarine is prohibited in competitive sport under the World Anti-Doping Agency code, where it is classified as a metabolic modulator. It is not approved as a prescription medicine in the United States, European Union, or other major markets. Regulatory action has focused on its presence in sports and in products marketed as research chemicals. Because it has no accepted medical indication, supply is often unregulated. This status creates legal and safety uncertainties for anyone who encounters the substance.
Anti-doping laboratories detect GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be used in some programs. Detection depends on factors such as dose, timing, metabolism, and the sensitivity of the assay. Published methods describe limits of detection in the low nanogram per milliliter range for related compounds. Exact detection windows are not fixed for all situations and remain an area of ongoing study.
Regulatory treatment varies, but cardarine is not approved as a medicine. Sports authorities list GW501516 as a prohibited substance, and it is banned at all times under the World Anti-Doping Agency code. Many countries restrict sales for human consumption, while online vendors market it as a research chemical. Such products may lack purity data, and their actual contents can differ from the label. Purchasing or possessing cardarine may carry legal consequences depending on jurisdiction. The compound is not a dietary supplement ingredient in regulated markets.
Clinical development stopped after rodent studies showed tumors at multiple sites. Whether those findings predict human cancer risk remains an open question, but they led sponsors to discontinue programs. Human safety data are limited to small, short-term studies that were not designed to assess cancer risk. Reported effects in those studies included changes in blood lipids, but the evidence is insufficient for medical use. Long-term consequences of nonmedical use are not well characterized. Questions about dose, duration, and individual susceptibility remain unresolved.
Cardarine is a common name for GW501516, an investigational compound developed in the 1990s for metabolic conditions. It acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in lipid and energy metabolism. The compound is frequently mislabeled as a selective androgen receptor modulator, or SARM, but its molecular target is different. GW501516 reached early clinical testing before development was discontinued. It has no approved therapeutic use in any country. The name cardarine is not a formal international nonproprietary name.
== Awards == Peak Scientific has received The Queen's Award for Enterprise: International Trade in 2004, 2007, 2011, 2014 and in 2016. In 2016 Peak Scientific Instruments Ltd also received the Queen's Award for Enterprise: Innovation.
Current global map of carbon dioxide concentration CDC – NIOSH Pocket Guide to Chemical Hazards – Carbon Dioxide Trends in Atmospheric Carbon Dioxide (NOAA) The rediscovery of CO2: History, What is Shecco? - as refrigerant
1867: The Medical and Chirurgical Society of London investigated whether injected narcotics had a general effect (as argued by Hunter) or whether they only worked locally (as argued by Wood). After conducting animal tests and soliciting opinions from the wider medical community, they firmly sided with Hunter. 1894: Luer taper allows two part syringes where the needle and syringe are easily fitted together or separated. 1899: Letitia Mumford Geer patented a syringe which could be operated with one hand and which could be used for self-administered rectal injections. 1946: Chance Brothers in Smethwick, West Midlands, England, produced the first all-glass syringe with interchangeable barrel and plunger, thereby allowing mass-sterilisation of components without the need for matching them. 1949: Australian inventor Charles Rothauser created the world's first plastic, disposable hypodermic syringe at his Adelaide factory. 1951: Rothauser produced the first injection-moulded syringes made of polypropylene, a plastic that can be heat-sterilised. Millions were made for Australian and export markets. 1956: New Zealand pharmacist and inventor Colin Murdoch was granted New Zealand and Australian patents for a disposable plastic syringe.
Ozone can kill microorganisms in air, water and process equipment and has been used in settings such as kitchen exhaust ventilation, garbage rooms, grease traps, biogas plants, wastewater treatment plants, textile production, breweries, dairies, food and hygiene production, pharmaceutical industries, bottling plants, zoos, municipal drinking-water systems, swimming pools and spas, and in the laundering of clothes and treatment of in–house mold and odors.
At the Yalta Conference of February 1945, Roosevelt signed a separate deal with Stalin in regard of Asia and refused to support Churchill on the issues of Poland and Reparations. Roosevelt ultimately approved the percentage agreement, but there was still apparently no firm consensus on the framework for a post-war settlement in Europe.
Sources: en.wikipedia.org
Lutzner cells were discovered by Marvin A. Lutzner, Lucien-Marie Pautrier, and Albert Sézary. These cells are described as the smaller forms of Sézary cells, or Sézary-Lutzner cells, and the two variants are recognised as being morphologically different. Aggregates of these cells in mycosis fungoides are known as a Pautrier's microabscesses. They are a form of T-lymphocytes that have been mutated. This atypical form of T-lymphocytes contains T-cell receptors on the surface and is found in both the dermis and epidermis layers of the skin. Since Lutzner cells are a mutated form of T-lymphocytes, they develop in bone marrow and are transported to the thymus is order to mature. The production and maturation stages occur before the cell has developed a mutation. Lutzner cells can form cutaneous T-cell lymphoma, which is a form of skin cancer.
== External links == DoD/FDA Shelf Life Extension Program SLEP - The DOD/FDA Shelf Life Extension Program SLEP information paper Other studies In vitro dissolution of expired antibiotics (Amoxicillin / Ampicillin / Doxycycline) Stockpiled Antivirals at or Nearing Expiration (Tamiflu / Relenza) Investigative Report: Do Antibiotic Expiration Dates Matter?
=== Natural non-canonical bases === In a cell, there are several non-canonical bases present: CpG islands in DNA (often methylated), all eukaryotic mRNA (capped with a methyl-7-guanosine), and several bases of rRNAs (methylated). Often, tRNAs are heavily modified postranscriptionally in order to improve their conformation or base pairing, in particular in or near the anticodon: inosine can base pair with C, U, and even with A, whereas thiouridine (with A) is more specific than uracil (with a purine). Other common tRNA base modifications are pseudouridine (which gives its name to the TΨC loop), dihydrouridine (which does not stack as it is not aromatic), queuosine, wyosine, and so forth. Nevertheless, these are all modifications to normal bases and are not placed by a polymerase.
Despite originally being marketed as an analgesic it is far more commonly prescribed and used to treat opioid use disorders, such as addiction to heroin. In 2020, it was the 186th most commonly prescribed medication in the United States, with more than 2.8 million prescriptions.
== Research == 1999: Preliminary results of early clinical trials with the fully human anti-TNF monoclonal antibody D2E7. 2001, June: Results from ARMADA, a double-blind, placebo-controlled clinical trial involving 271 patients with active rheumatoid arthritis, despite treatment with methotrexate, are announced. Results show that 50% of patients demonstrate a 50% improvement in their American College of Rheumatology (ACR) score. 2002: Broke ground on a new biologics manufacturing facility. 2002: Adalimumab results from five separate trials show that it is effective at reducing signs and symptoms of rheumatoid arthritis, with rapid onset of action and sustained efficacy. Adalimumab was safe and effective when given alone or in combination with methotrexate (MTX) as a subcutaneous injection. 2002: Humira approved by the US Food and Drug Administration (FDA) for treatment of rheumatoid arthritis. 2003: Humira made available for the treatment of rheumatoid arthritis and continued clinical studies for additional indications. 2005: Humira made available for the treatment of psoriatic arthritis. Exceeded US$1 billion in annual sales for the first time. 2005: Japanese company Eisai submits new drug application to make adalimumab (D2E7) available for the treatment of rheumatoid arthritis in Japan. 2006: Submitted Humira for approval for the treatment of Crohn's disease. Approved for the treatment of ankylosing spondylitis. Exceeded US$2 billion in annual sales. 2007: Humira approved for the treatment of Crohn's disease in the United States.
Sources: en.wikipedia.org
== Following artwork == In 2008, Evaristti announced that he and musician Kenneth Thordal were planning another artwork involving goldfish, called FIVE2TWELVE. At this exhibition, the body of American death row inmate Gene Hathorn Jr. would be turned into freeze-dried fish food and placed in front of a pool of goldfish, and the audience would have to choose between feeding the fish with freeze-dried human meat and letting them starve to death. The plans were abandoned the following year, when Hathorn's sentence was commuted to three concurrent life sentences.
In France, Santo Daime won a court case allowing them to use the tea in early 2005; however, they were not allowed an exception for religious purposes, but rather for the simple reason that they did not perform chemical extractions to end up with pure DMT and harmala and the plants used were not scheduled. Four months after the court victory, the common ingredients of ayahuasca as well as harmala were declared stupéfiants, or narcotic schedule I substances, making the tea and its ingredients illegal to use or possess. In June 2019, Oakland, California, decriminalized natural entheogens. The City Council passed the resolution in a unanimous vote, ending the investigation and imposition of criminal penalties for use and possession of entheogens derived from plants or fungi. The resolution states: "Practices with Entheogenic Plants have long existed and have been considered to be sacred to human cultures and human interrelationships with nature for thousands of years, and continue to be enhanced and improved to this day by religious and spiritual leaders, practicing professionals, mentors, and healers throughout the world, many of whom have been forced underground." In January 2020, Santa Cruz, California, and in September 2020, Ann Arbor, Michigan, decriminalized natural entheogens.
T cell development in the thymus. Video by Janice Yau, describing stromal signaling and tolerance. Department of Immunology and Biomedical Communications, University of Toronto. Master's Research Project, Master of Science in Biomedical Communications. 2011.
Methandienone binds to and activates the androgen receptor (AR) in order to exert its effects. These include dramatic increases in protein synthesis, glycogenolysis, and muscle strength over a short space of time. While it can be metabolized by 5α-reductase into methyl-1-testosterone (17α-methyl-δ1-DHT), a more potent AAS, the drug has extremely low affinity for this enzyme and methyl-1-testosterone is thus produced in only trace amounts. As such, 5α-reductase inhibitors like finasteride and dutasteride do not reduce the androgenic effects of metandienone. Nonetheless, while the ratio of anabolic to androgenic activity of metandienone is improved relative to that of testosterone, the drug does still possess moderate androgenic activity and is capable of producing severe virilization in women and children. As such, it is only really commonly used in men. Metandienone is a substrate for aromatase and can be metabolized into the estrogen methylestradiol (17α-methylestradiol). While the rate of aromatization is reduced relative to that for testosterone or methyltestosterone, the estrogen produced is metabolism-resistant and hence metandienone retains moderate estrogenic activity. As such, it can cause side effects such as gynecomastia and fluid retention. The co-administration of an antiestrogen such as an aromatase inhibitor like anastrozole or a selective estrogen receptor modulator like tamoxifen can reduce or prevent such estrogenic side effects. Metandienone has no progestogenic activity.
Packaged refrigerated or frozen red meat — to control pathogens (E. Coli O157:H7 and Salmonella) and to extend shelf life Packaged poultry — control pathogens (Salmonella and Camplylobacter) Fresh fruits, vegetables, and grains — to control insects and inhibit growth, ripening and sprouting Pork — to control trichinosis Herbs, spices and vegetable seasonings — to control insects and microorganisms Dry or dehydrated enzyme preparations — to control insects and microorganisms White potatoes — to inhibit sprout development Wheat and wheat flour — to control insects Loose or bagged fresh iceberg lettuce and spinach Crustaceans (lobster, shrimp, and crab) Shellfish (oysters, clams, mussels, and scallops)
Sources: en.wikipedia.org
Anti-doping laboratories typically use LC-MS/MS to detect GW501516 and its metabolites in urine. The method is sensitive and can identify the compound at low concentrations. Detection depends on sample timing, metabolism, and the specific assay.
Legality varies by country and context. It lacks marketing approval as a medicine in major countries. Sports organizations prohibit its use at all times.
A certificate of analysis may report identity, purity, and testing methods for a specific batch. It does not guarantee safety or legal status. Independent verification can confirm whether the material matches the label.
Cardarine targets PPARδ, a nuclear receptor involved in lipid and energy metabolism. It does not bind the androgen receptor in the way SARMs do.