If you have been reading about research chemical and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Updated 2026-04-26. Numbers and descriptions here follow the published literature rather than marketing material.
Legal status varies by country. In some places, cardarine is controlled under medicines or psychoactive substances laws; in others, it may be sold with minimal oversight as a research chemical. Customs agencies have intercepted shipments, and several national health agencies have issued warnings about products marketed for bodybuilding or performance enhancement. The lack of a standardized pharmaceutical supply means identity, purity, and contamination levels can differ widely between samples. These factors make cardarine a regulatory and public health concern rather than a conventional prescription drug.
Cardarine is a common name for GW501516, a synthetic compound first described in the 1990s as a selective agonist of the peroxisome proliferator-activated receptor delta. It was studied in preclinical models for metabolic and cardiovascular conditions, but it has not been approved as a medicine in the United States, Europe, or other major jurisdictions. Retail products labeled as cardarine are generally research chemicals or supplements, not pharmaceutical formulations. Because human safety and efficacy data remain limited, regulatory agencies treat it as an unapproved substance rather than a therapeutic product.
Sporting authorities added GW501516 to prohibited lists after it appeared in athlete samples and online markets. The World Anti-Doping Agency classifies it as a hormone and metabolic modulator, and its use can lead to an anti-doping rule violation. Some early laboratory work suggested effects on fatty acid oxidation and endurance-related metabolism in animals, but those findings do not establish safe or effective use in people. Reports of adverse events in humans are scarce and often anecdotal, which complicates risk assessment.
Detection of GW501516 in biological samples generally relies on liquid chromatography coupled with tandem mass spectrometry. Urine is a common matrix in anti-doping analysis, while blood or plasma may be used in research settings. Sample preparation can involve enzymatic hydrolysis, protein precipitation, or solid-phase extraction before instrumental analysis. Because the compound undergoes metabolism, assays may target the parent molecule, one or more metabolites, or both. Detection windows are not fixed; they depend on factors such as dose, route, individual metabolism, and assay sensitivity. Reference standards are required for accurate identification and quantification.
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.
| Property | Value | Notes |
|---|---|---|
| IUPAC name | {4-[({4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazol-5-yl}methyl)sulfanyl]phenoxy}acetic acid | Systematic name for GW501516 |
| CAS Registry Number | 317318-70-0 | Unique identifier for the parent compound |
| Molecular formula | C21H18F3NO3S2 | Includes carbon, hydrogen, fluorine, nitrogen, oxygen, and sulfur |
| Molecular weight | 453.5 g/mol | Approximate value for the neutral form |
| Appearance | White to off-white powder | Typical description for purified laboratory material |
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.
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.
selectable marker A gene or other genetic material whose expression in cultured cells confers a selective advantage in the culture environment, causing cells expressing the gene to have one or more traits suitable for artificial selection. Selectable markers are widely used in the laboratory as a type of reporter, usually to indicate the success of a procedure meant to introduce exogenous DNA into a host cell such as transfection or transformation. A common example is an antibiotic resistance gene which is transformed into competent bacterial cells cultured on a medium containing the particular antibiotic, such that only those cells which have successfully taken up and expressed the gene are able to survive and grow into colonies.
Azvudine is an antiviral drug which acts as a reverse transcriptase inhibitor. It was discovered for the treatment of hepatitis C and has since been investigated for use against other viral diseases such as AIDS and COVID-19, for which it was granted conditional approval in China. Azvudine was first discovered in 2007. It costs 350 Chinese yuan per 7 days for COVID, as of November 2022.
=== 17 June === Ukraine launched a drone attack on western Russia, with the HUR claiming to have struck a metallurgical plant and military production facilities in Belgorod, Voronezh, and Lipetsk Oblasts. The Russian Investigative Committee charged Ukrainian Colonel Mykola Dzyaman with terrorism in absentia and placed him on a wanted list for ordering the shooting down of a A-50U over the Sea of Azov on 23 February 2024.
Furrydom's Storyteller: Uncle Kage – personal website Samuel Conway's Journal – journal Samuel Conway on X Uncle Kage at WikiFur Articles at WikiFur: Uncle Kage's Story Hour, ConClave, Sofawolf Press, Anthrolations, HistoriMorphs, Synnabar
Sources: en.wikipedia.org
Logan Roy is a fictional character and one of the main characters of the American HBO satirical dark comedy-drama television series Succession. He is portrayed by Brian Cox and was created by showrunner Jesse Armstrong. Armstrong initially conceived the series as a feature film about the Murdoch family. He later decided to create a new script centered on original characters, with Logan being loosely based on Rupert Murdoch and Sumner Redstone. Logan Roy is the self-made billionaire founder of media and entertainment conglomerate Waystar RoyCo and the patriarch of the Roy family. He is a harsh leader who primarily focuses on his company rather than his four children Connor, Kendall, Roman and Siobhan. He is distrustful of his children and his subordinates, refusing to step down as CEO at the start of the series despite his advanced age as well as health. His conflicts with his family, his employees at Waystar, other businesses, and the United States Department of Justice form the central story-line of the series. The character and Brian Cox's performance has been critically acclaimed, and has been cited as one of the best villains and characters in television. For his performance, Cox won the Golden Globe Award for Best Actor in a Drama Series and was nominated for three Primetime Emmy Awards for Outstanding Lead Actor in a Drama Series.
== Traditional and alternative uses == The medicinal uses of insects and other arthropods worldwide have been reviewed by Meyer-Rochow, who provides examples of all major insect groups, spiders, worms and molluscs and discusses their potential as suppliers of bioactive components. Using insects (and spiders) to treat various maladies and injuries has a long tradition and, having stood the test of time, can be effective and provide results. However, sometimes folk-medicinal "logic" was based on the Doctrine of Signatures ("let likes be cured by likes") and had, if any at all, little more than a psychological effect. For example, to treat cases of constipation, dung beetles were prescribed; to slim down stick insects were thought to help; hairy tarantulas seemed the right treatment for hair loss and fat grubs resembling the swollen limb caused by the parasite Wuchereria bancrofti were expected to help the elephantiasis patient. An organism bearing parts that resemble human body parts, animals, or other objects, was thought to have useful relevance to those parts, animals or objects. So, for example, the femurs of grasshoppers, which were said to resemble the human liver, were used to treat liver ailments by the indigenous peoples of Mexico. This doctrine is common throughout traditional and alternative medicine, but is most prominent where medical traditions are broadly accepted, as in traditional Chinese medicine and Ayurveda, and less by community and family based medicine, as is more common in parts of Africa.
Some traditional Mexican open-air markets called tianguis, such as the Mercado Margarita Maza de Juárez in Oaxaca, are separated into a fresh food section (zona húmeda) and a dry goods section (zona seca). A 2002 study observed a trend that Mexican consumers, especially those in the middle class, increasingly prefer supermarkets for beef purchases as opposed to traditional markets. In 2014, a study of Mexican beef retail also noted an ongoing transition from traditional full-service markets to self-service meat display cases in supermarkets. In Mexico, conflicts between traditional and modern retailers are handled at the municipal and state levels. Some local zoning rules, such as those in the central districts of Mexico City and Morelia, have prohibited traditional markets from operating in urban districts without providing further assistance to the retailers.
Virion structure is well described in a published review. Sendai virus is an enveloped virus: its outer layer is a lipid envelope, which contains glycoprotein hemagglutinin-neuraminidase (HN) with two enzymatic activities (hemagglutinating and neuraminidase). Hemagglutinin (H) serves as a cell attachment factor and membrane fusion protein. Neuraminidase (NA) is a sialidase that cleaves and removes sialic acid from the surface of a host cell. This cleavage promotes the fusion of the viral lipid envelope with the cell outer membrane. In the lipid envelope of the virus located also a fusion protein (F), which is also a glycoprotein that ensures the virus entry into a host cell after viral adsorption. F-protein, as other paramyxoviral fusion proteins, is a trimeric class I viral membrane fusion protein. It is produced in the form of an F0 precursor that must be cleaved by host cell proteases into disulfide-bonded F1 and F2 subunits in order for the trimer to become biologically active. Under the lipid membrane is a matrix protein (M); it forms the inner layer of the virus envelope and stabilizes it structure. The SeV virion also contains the nucleocapsid core, which is composed of the genomic RNA, the nucleocapsid protein (NP), the phosphoproteins (P), which is an essential subunit of the viral of RNA-dependent RNA polymerase (RDRP), and the large protein (L) that is a catalytic subunit of this polymerase. C-protein, which is translated from an alternative reading frame of the P-coding mRNA, is also associated with a viral capsid.
Immediate-release hydrocodone with paracetamol (acetaminophen) (Vicodin, Lortab, Lorcet, Maxidone, Norco, Zydone) Immediate-release hydrocodone with ibuprofen (Vicoprofen, Ibudone, Reprexain) Immediate-release hydrocodone with aspirin (Alor 5/500, Azdone, Damason-P, Lortab ASA, Panasal 5/500) Controlled-release hydrocodone (Hysingla ER by Purdue Pharma, Zohydro ER) Hydrocodone is not available in parenteral or any other non-oral forms.
Sources: en.wikipedia.org
No. Major drug regulators have not approved GW501516 for treating any medical condition. Products sold as cardarine are typically unapproved research chemicals or supplements, so their contents and safety are not assured.
It is prohibited by the World Anti-Doping Agency as a hormone and metabolic modulator. Athletes who test positive for GW501516 can face sanctions, including suspensions and loss of results.
Cardarine is a common or trade-style name, while GW501516 is the research code for the same chemical entity. Some sources also use Endurobol or GSK-516. The names refer to the same compound, not distinct drugs.
Cardarine targets PPARδ, a nuclear receptor involved in lipid and energy metabolism. It does not bind the androgen receptor in the way SARMs do.