The short version of Cardarine fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-05-17 and is reviewed periodically as new material appears.
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.
The pharmacological interest in cardarine centers on PPARδ activation and its downstream effects on lipid handling and mitochondrial function. In animal studies, PPARδ agonists have been associated with changes in exercise endurance and fatty acid utilization, though results vary by model and protocol. Human data remain sparse, and the absence of large controlled trials limits conclusions about efficacy. Researchers often describe the compound as a tool for probing PPARδ biology rather than a proven therapeutic agent.
Safety discussions about cardarine frequently cite rodent carcinogenicity findings reported in the 2000s. In those studies, treated animals developed tumors at multiple sites, leading sponsors to discontinue clinical development. The relevance of these findings to humans has not been resolved, but they are a major reason the compound is not approved. Current literature emphasizes uncertainty about long-term effects and the risks of unregulated use. Regulators and health agencies have not established a safe human exposure level.
Cardarine is a synthetic compound also known as GW501516, GW-501516, and sometimes endurobol. It was developed as a selective agonist of peroxisome proliferator-activated receptor delta, a nuclear receptor involved in fatty acid oxidation and energy metabolism. The compound was studied in preclinical models for metabolic and cardiovascular conditions, but it did not become a marketed human medicine. In regulatory and anti-doping contexts, it is treated as a prohibited substance rather than a licensed medicine.
| 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. |
Laboratory detection of GW501516 commonly uses liquid chromatography coupled with tandem mass spectrometry. The method can identify the parent compound or its metabolites in urine and blood after sample cleanup. Protein precipitation, solid-phase extraction, or enzymatic hydrolysis may precede analysis, depending on the matrix. Reference standards are required for accurate quantification and confirmation. Because the compound is not approved, testing often occurs in anti-doping, forensic, or research settings rather than routine clinical care. Results are reported with limits of detection and quantification.
Stability of GW501516 depends on form, temperature, light exposure, and moisture. Solid reference material is typically stored frozen or refrigerated in a desiccator and protected from light. Solutions in organic solvents such as dimethyl sulfoxide are often kept frozen in aliquots to reduce freeze-thaw cycling. Aqueous solubility is low, so aqueous stock solutions can be difficult to prepare without cosolvents. Degradation may appear as changes in chromatographic purity or mass spectral signal. Stability studies are needed to establish shelf life for any specific preparation.
Quality assessment for cardarine samples usually combines identity, purity, and impurity testing. Nuclear magnetic resonance spectroscopy and mass spectrometry can confirm molecular structure, while high-performance liquid chromatography estimates purity. Certificates of analysis from testing laboratories may list these results, but they do not establish safety or legality. In the absence of approved manufacturing, products sold online may contain the wrong compound, variable amounts, or unlisted contaminants. Independent verification is therefore central to analytical work and to interpreting any reported biological activity.
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.
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.
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.
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.
PPARδ is a nuclear receptor that influences transcription of genes involved in fatty acid oxidation, lipid transport, and energy homeostasis. GW501516 binds and activates this receptor with high selectivity relative to PPARα and PPARγ in laboratory assays. Activation alters expression of target genes in skeletal muscle, liver, and adipose tissue in animal models. The exact clinical consequences of these changes in humans remain incompletely characterized, and observed effects in animals do not establish therapeutic benefit or safety.
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.
== Diagnosis == The diagnosis of MBS is heavily dependent on the presentation and histopathology of its tumors. Of particular importance, the presence of pseudo-lipoblasts in a myxoid sarcoma-like background is an extremely strong indicator that the tumor is a MFS. and tumors with a myxofibrosarcoma-like histopathology that initiate in the retroperitoneum, abdominal cavity, or pelvis are nearly always dedifferentiated liposarcomas. Magnetic resonance imaging (MRI) has been helpful in diagnosing MBS. On T2-weighted MRI, 81% of MFS tumors give a tail sign, i.e. a multidirectional signal spreading away from the main mass along a facial plane (i.e. a line or band of connective tissue). Among all myxoid-predominant tissue lesions, this MRI method diagnoses MBS with a specificity of 79% to 90%. This MRI finding is also extremely valuable for gauging the extent and depth of surgery needed to completely remove MBS tumors.
==== Postmodification of homochiral MOFs ==== Lin and coworkers have shown that the postmodification of MOFs can be achieved to produce enantioselective homochiral MOFs for use as catalysts. The resulting 3D homochiral MOF {[Cd3(L)3Cl6] • 4DMF • 6MeOH • 3H2O} (L=(R)-6,6'-dichloro-2,2'-dihydroxyl-1,1'-binaphthyl-bipyridine) synthesized by Lin was shown to have a similar catalytic efficiency for the diethylzinc addition reaction as compared to the homogeneous analogue when was pretreated by Ti(OiPr)4 to generate the grafted Ti- BINOLate species. The catalytic activity of MOFs can vary depending on the framework structure. Lin and others found that MOFs synthesized from the same materials could have drastically different catalytic activities depending on the framework structure present.
By 1859, Cuba still did not have a Grand Lodge, and to accelerate this work, they contacted one of the most powerful figures of Freemasonry in the United States at the time, and today the most controversial figure in the history of North American Freemasonry, Albert Pike, requesting his guidance and assistance. Pike was at that time the Grand Commander of the Supreme Council of the Southern Jurisdiction of the United States for the Scottish Rite at Charleston, South Carolina.On March 26, 1859, Albert Pike gave his personal authority to the Cuban exile Andrés Cassard to create new offices, degrees, and bodies of the Scottish Rite in Cuba. However, later that year, Albert Pike and Albert Mackey also granted this authority to others in Cuba. Whether Cassard was aware of that is unclear. Four initiates from Fraternidad Lodge No. 387 joined three Cuban Freemasons living in Hudson, New York to formally petition the Grand Lodge of South Carolina to grant authority for a third Lodge. San Andres Lodge No. 93 was chartered in November 17, 1859. On November 27, 1859, the Grand Lodge of South Carolina granted a warrant to merge the three Cuban Lodges into the first Grand Lodge seen in Cuba in almost four decades; the Gran Logia de Colón (English: Grand Lodge of Columbus) at Santiago de Cuba. Under the authority Grand Lodge of Colon, the three Lodges were restructured as Fraternidad Lodge No.1, Prudencia Lodge No. 2, and San Andres Lodge No. 3. Francisco Griñán y Mozo served as the first Grand Master of the Grand Lodge of Colon.
Separate and thoroughly wash red blood cells from a peripherally collected EDTA blood collection tube using centrifugation. Mix washed patient red blood cells, that are positive for the IgG phase of the direct antiglobulin test, with glycine acid (pH 3.0). Centrifuge the mixture, and immediately remove the supernatant from the destroyed red blood cells. Add buffer to return the mixture to a neutral pH. This step is critical for further antibody identification testing, because the antibody will not react at a pH of less than 7.0. Additional centrifugation may be needed to clarify the solution. The resulting solution is known as the eluate. This eluate is then tested against a panel of red blood cells with known antigen profiles. This antibody identification procedure will aid in determining the specificity of the antibody.
Sources: en.wikipedia.org
== Further reading == Farlow, J. O.; Gatesy, S. M.; Holtz, T. R. Jr.; Hutchinson, J. R.; Robinson, J. M. (2000). "Theropod Locomotion". American Zoologist. 40 (4): 640–663. doi:10.1093/icb/40.4.640. JSTOR 3884284.
=== Regeneration phase === In the Regeneration phase, blood vessels are repaired and new cells form in the damaged site similar to the cells that were damaged and removed. Some cells such as neurons and muscle cells (especially in the heart) are slow to recover.
== External links == Video: Hide & Animal Protein Glue: How to Select, Make & Use Video on hide glue, by Keith Cruickshank Old Brown Glue - Articles Why Not Period Glue? - article by W. Patrick Edwards on hide glue WPatrickEdwards: Why Use Reversible Glue?
Sources: en.wikipedia.org
232Th also very occasionally undergoes spontaneous fission rather than alpha decay, but at a much lower rate than uranium-238 and all natural fission products and evidence come predominantly from it. Its partial half-life for this process is very long at over 1021 years.
=== Arrests === A 1995 Bureau of Justice Statistics report found that from 1991 to 1993, 16% of those who sold drugs were black, but 49% of those arrested for doing so were black. A 2006 study concluded that blacks were significantly overrepresented for those arrested for drug delivery offenses in Seattle. The same study found that it was a result of law enforcement focusing on crack offenders and outdoor venues and dedicating resources to racially-heterogeneous neighborhoods. A 2010 study found little difference by race with regards to the rates of adolescent drug dealing. A 2012 study found that black youths were less likely than white youths to use or sell drugs but more likely to be arrested for doing so. A 2013 study by the American Civil Liberties Union determined that a black person in the United States was 3.73 times more likely to be arrested for marijuana possession than a white person, but both races have similar rates of marijuana use. Iowa had the highest racial disparity of the fifty states. Blacks in Iowa were arrested for marijuana possession at a rate 8.4 times higher than whites. One factor that may explain the difference in arrest rates between whites and blacks is that blacks are more likely than whites to buy marijuana outdoors, from a stranger, and away from home.
(2026) reconstruct the evolutionary history of members of the genus Arvicola in Western Europe during the late Middle and Late Pleistocene on the basis of the study of morphology of teeth from the Lazaret Cave and Moula-Guercy sites (France), Abauntz Cave, Cova Eirós (Spain) and Trou Al'Wesse (Belgium), interpreted as consistent with a complex biogeographic history including multiple dispersals into Western Europe and subsequent local extinctions and recolonizations. New fossil material of members of the genus Byzantinia, providing new information on the morphology of teeth of members of this genus and their evolution, is described from the Miocene strata of the Zahleh Formation (Lebanon) by López-Antoñanzas et al. (2026). A study on the phylogenetic relationships and evolutionary history of extant and extinct hamsters is published by Dirnberger et al. (2026). Bujalska et al. (2026) reconstruct the evolutionary history of European small hamsters on the basis of mitochondrial genomes from Late Pleistocene and Holocene remains from Central and Western Europe, the Balkans and Anatolia, identifying evidence of presence of the winter white dwarf hamster in Central Europe during the Late Pleistocene. Pacheco-Castro, Carranza-Castañeda & Wang (2026) report the discovery of fossil material of Sigmodon minor from the Pliocene strata of the San Miguel de Allende Basin, representing the first record of the species from central Mexico and its southernmost known record in North America.
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 an investigational synthetic compound that acts as a PPARδ agonist. It is also known as GW501516 and has been studied mainly in preclinical research. It is not an approved medicine.