A practical reference on Research chemical: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
Reviewed 2026-06-15. Anything still debated is marked as such rather than presented as settled.
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.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Prohibited in sport | Listed by WADA as a metabolic modulator. |
| Approved medical use | None in major jurisdictions | Not a registered drug. |
| Common test matrix | Urine | Most anti-doping samples use urine. |
| Typical detection method | LC-MS/MS | Detects parent compound and metabolites. |
| Reference standard storage | -20 °C, desiccated | Typical for analytical standards. |
Laboratory handling focuses on identity, purity, and stability. Reference standards are typically stored cold and dry, protected from light, because solutions can degrade over time. Analytical checks may use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Impurities and related substances can be separated chromatographically and compared with a known standard. Because cardarine is not an approved drug, compendial monographs are absent, and laboratories often rely on in-house methods. Reported purity varies among unregulated products and should not be assumed from a label.
GW501516 binds and activates PPARδ, a nuclear receptor that influences transcription of genes involved in fatty acid oxidation and energy use. Activation shifts some metabolic pathways in preclinical models, which is why the compound has been studied for lipid disorders and exercise-related endpoints. The exact downstream effects in humans are incompletely mapped. PPARδ is expressed in many tissues, including skeletal muscle, liver, and adipose tissue, so broad activation may have varied consequences. Researchers continue to examine how selective or partial activation might alter the balance between benefits and risks.
Published human data are sparse and mostly come from early-phase trials. Those studies examined short-term changes in lipids, glucose, and exercise capacity, but they were not large enough to establish efficacy or long-term safety. Some animal experiments reported increased running endurance, yet such findings do not prove a performance benefit in people. Anti-doping laboratories detect GW501516 and its metabolites in urine or blood using liquid chromatography-tandem mass spectrometry. Detection windows depend on dose, sample type, and individual metabolism. The method is sensitive enough to identify trace residues in tested samples.
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.
GW501516 acts as an agonist at the peroxisome proliferator-activated receptor delta, a nuclear receptor that regulates gene expression. Activation shifts transcription toward genes involved in fatty acid uptake, oxidation, and energy expenditure. The compound does not bind the androgen receptor and therefore differs from anabolic steroids and SARMs. In rodent models, this metabolic shift has been linked to increased running endurance and reduced fat accumulation. The exact downstream pathways in humans remain incompletely characterized.
Mizell won his first start of 1953, coming within an out of throwing a complete game on April 22 against Cincinnati in an 8–3 victory. On April 28, he held the Phillies to one run for five innings in a tie, as rain forced the game to be called and it was never resumed. His most notable game of the season came on May 4, when he gave up just two hits in a shutout of the Pirates. Mizell had a 2.83 ERA before the All-Star Break, but he had a 4.14 ERA in the second half of the season. On August 7, he held the New York Giants to one run in a complete game, 2–1 triumph. Exactly one week later, he held Cincinnati to one run over nine innings, but the Cardinals only scored one for him. After throwing a scoreless 10th, Mizell took the loss in the 11th when Roy McMillan had an RBI single against him. His 11 strikeouts in that contest were a season-high, and he also had five games in which he had nine, including each of his last two starts. In 33 starts, he had a 13–11 record. For the second year in a row, he led the NL in strikeouts per 9 innings pitched (6.9), and he finished third in the league with 173 strikeouts this time, behind Roberts's 198 and Carl Erskine's 187. His 3.49 ERA was the ninth-best mark in the league, but his 114 walks trailed only Johnny Lindell's 139 for the league lead.
==== Constrained phenylethylamine compounds ==== Researchers at Abbott Laboratories identified three novel series of DPP-4 inhibitors using HTS. After more research and optimization ABT-341 was discovered (Figure 8). It is a potent and selective DPP-4 inhibitor with a 2D-structure very similar to sitagliptin. However, the 3D-structure is quite different. ABT-341 also has a trifluorophenyl group that occupies the S1-pocket and the free amino group, but the two carbonyl groups are orientated 180° away from each other. ABT-341 is also believed to interact with the Tyr547, probably because of steric hindrance between the cyclohexenyl ring and the tyrosine side-chain. Omarigliptin is one of such compound which is in Phase-III development by Merck & Co.
Bukele stated in June 2019 that his government would no longer recognize Nicolás Maduro as the president of Venezuela, instead recognizing Juan Guaidó as Venezuela's legitimate president during Venezuela's presidential crisis. On 3 November of that year, he expelled Maduro-appointed Venezuelan diplomats from El Salvador. Bukele considers Maduro to be a dictator. Bukele rejected the results of the 2024 Venezuelan presidential election as a "fraud" ("fraude") and stated that he would not restore relations with Venezuela unless there were "real elections" ("elecciones de verdad"). Bukele refused to recognize the presidency of Manuel Merino in Peru in November 2020, calling Merino's government "putschist" ("golpista"). He and the Legislative Assembly denounced the results of the 2021 Nicaraguan general election, that were seen by several governments as fraudulent. El Salvador has abstained from resolutions critical of Nicaragua at the Organization of American States since 2022, with Bukele's government citing "non-interference" ("no injerencia") as justification. In 2024, El Salvador was the only country to abstain on an OAS resolution to condemn Ecuador for raiding the Mexican embassy in Quito to arrest former Ecuadorian vice president Jorge Glas.
The Lebanese Health Ministry said that Israeli strikes damaged 68 hospitals, 63 primary healthcare facilities, and 177 ambulances. The World Health Organization reported that 47% of the attacks on health facilities resulted in fatalities. According to the United Nations Development Programme, Israeli attacks in the districts of Nabatieh, Bint Jbiel, Tyre, Baalbek, and Baabda damaged 48% of businesses, 36 health facilities, 40 water facilities, 18 telecommunication facilities, 36 public electricity facilities, and 83 educational institutions.
Sources: en.wikipedia.org
In humans, the total female diploid nuclear genome per cell extends for 6.37 Gigabase pairs (Gbp), is 208.23 cm long and weighs 6.51 picograms (pg). Male values are 6.27 Gbp, 205.00 cm, 6.41 pg. Each DNA polymer can contain hundreds of millions of nucleotides, such as in chromosome 1. Chromosome 1 is the largest human chromosome with approximately 220 million base pairs, and would be 85 mm long if straightened. In eukaryotes, in addition to nuclear DNA, there is also mitochondrial DNA (mtDNA) which encodes certain proteins used by the mitochondria. The mtDNA is usually relatively small in comparison to the nuclear DNA. For example, the human mitochondrial DNA forms closed circular molecules, each of which contains 16,569 DNA base pairs, with each such molecule normally containing a full set of the mitochondrial genes. Each human mitochondrion contains, on average, approximately 5 such mtDNA molecules. Each human cell contains approximately 100 mitochondria, giving a total number of mtDNA molecules per human cell of approximately 500. However, the amount of mitochondria per cell also varies by cell type, and an egg cell can contain 100,000 mitochondria, corresponding to up to 1,500,000 copies of the mitochondrial genome (constituting up to 90% of the DNA of the cell).
After college, Guillaume joined the Karamu Players in Cleveland and performed in musical comedies and opera. He toured the world in 1959 as a cast member of the Broadway musical Free and Easy. He made his Broadway debut in Kwamina in 1961. His other stage appearances included Golden Boy (with Sammy Davis Jr.), Tambourines to Glory, Guys and Dolls, for which he received a Tony Award nomination, Jacques Brel is Alive and Well and Living in Paris, and Purlie. His additional roles included Katherine Dunham's Bambouche and in Fly The Blackbird. In 1964, Guillaume portrayed Sportin' Life in a revival of Porgy and Bess at New York City Center. Guillaume was a member of the Robert De Cormier Singers, performing in concerts and on television. He recorded an LP album, Columbia CS9033, titled Just Arrived, as a member of The Pilgrims, a folk trio, with Angeline Butler and Millard Williams. Columbia records producer Tom Wilson had set out to create the Pilgrims as an answer to the popular folk trio Peter, Paul and Mary. By early 1964, the Pilgrims had recorded a handful of songs and Wilson was looking for the right song for the group's debut single when a then-unknown singer/songwriter named Paul Simon arrived for a meeting with Wilson and eventually pitched his new composition, "The Sound of Silence". Wilson liked the song and had Simon record a demo for the group, but when Simon and his friend, Art Garfunkel, sang the song for Wilson in person, he signed them to a record contract instead of using it for The Pilgrims.
D-Phenylalanine (DPA, D-Phe), sold under the brand names Deprenon, Sabiben, and Sabiden, is an enantiomer of phenylalanine which is described as an antidepressant and is marketed as a prescription drug for medical use in Argentina. The medication has been marketed since at least the 1970s and continued to be available by the 2000s. D-Phenylalanine has been found to act as an enkephalinase inhibitor, an inhibitor of enkephalinase enzymes that break down endogenous opioid peptides called enkephalins. It has been found to produce anti-inflammatory, analgesic, and anti-craving effects in animal studies.
== Third Ministry == On 12 February 2004, following the 2004 election, a ministry of 19 cabinet ministers and 6 parliamentary secretaries was sworn in. It served until the reconstitution of the Ministry on 28 July 2005 following the resignation of Deputy Premier Terry Mackenroth. On 3 March 2005, Liddy Clark resigned after an investigation to the Crime and Misconduct Commission into airfares given to Aboriginal activists to Palm Island following a riot there. Her position in the ministry was not filled, with her portfolio going to John Mickel.
Attachment of alkyl groups to DNA bases, resulting in the DNA being fragmented by repair enzymes in their attempts to replace the alkylated bases, preventing DNA synthesis and RNA transcription from the affected DNA. DNA damage via the formation of cross-links which prevents DNA from being separated for synthesis or transcription. Induction of mispairing of the nucleotides leading to mutations. The precise mechanisms by which chlorambucil acts to kill tumor cells are not yet completely understood.
Sources: en.wikipedia.org
Legal status varies by country, but cardarine is not approved as a medicine in major jurisdictions. It is often sold as a research chemical, a category that may not be lawful for human use. Buyers should check local laws and product labels carefully.
Anti-doping laboratories use LC-MS/MS to detect GW501516 and its metabolites, usually in urine. The method can identify the parent compound at low concentrations. Detection windows vary with dose and individual factors.
No, cardarine has no approved medical uses in major jurisdictions. Early research explored metabolic conditions, but those programs were discontinued. It is not a registered treatment for any disease.
No. Cardarine is GW501516, a PPARδ agonist, while SARMs act on androgen receptors. The two classes are often grouped in informal discussions despite different mechanisms.