anti-doping is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Last reviewed on 2026-02-05. Where a claim depends on a specific study, the study is described rather than over-claimed.
Analytical chemists detect SR9009 with liquid chromatography-tandem mass spectrometry, commonly abbreviated LC-MS/MS. Sample preparation may involve protein precipitation, liquid-liquid extraction, or solid-phase extraction before analysis. Laboratories can target the parent compound or its metabolites, depending on the matrix and the purpose of testing. Anti-doping methods require sensitive and specific assays because concentrations in biological samples can be low. Reference standards and validated methods are essential for reliable identification and quantification.
Regulatory agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
Several misconceptions surround SR9009. It is often described as a SARM, a steroid, or an exercise pill, but its known target is the REV-ERB receptor family. Rodent studies have examined exercise capacity and metabolic markers, yet human outcomes remain unproven. Oral bioavailability appears low in animals, and human pharmacokinetics are not well characterized. Online products may contain impurities or different compounds, so identity and purity testing are important for research use.
Regulatory treatment of SR9009 reflects its investigational status. The compound has no approved human therapeutic indication, and sports authorities prohibit its use. It appears on anti-doping lists as a non-approved substance or metabolic modulator, depending on the list version. Products sold online as research chemicals are not quality-controlled medicines, so their identity and purity can differ from the label. Such products may also contain unlisted compounds, which complicates both testing and safety assessment.
Scientific discussion of SR9009 often separates animal evidence from human anecdote. Rodent studies provide controlled data on endurance, metabolism, and gene expression, but they use specific strains, doses, and treatment durations. Human reports are mostly uncontrolled and cannot establish cause and effect. Open questions include oral bioavailability, tissue distribution, metabolic stability, and long-term effects. Review articles generally call for more rigorous pharmacokinetic and safety research before any clinical use could be considered.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Not approved for human use | Research-use-only status in many markets |
| WADA status | Prohibited in sport | Generally listed as a non-approved substance |
| Detection technique | LC-MS/MS | Common for urine and blood analysis |
| Common alias | Stenabolic | Informal market nickname, not a pharmacopoeial name |
| Purity check | HPLC or LC-UV | Independent certificate of analysis is typical |
Identity and purity testing for SR9009 commonly uses liquid chromatography coupled with tandem mass spectrometry. This method separates the compound from matrix components and detects it by mass-to-charge transitions, providing sensitive and specific confirmation. Nuclear magnetic resonance spectroscopy can support structural identification, while high-performance liquid chromatography with ultraviolet detection may estimate purity. Because online products labeled as SR9009 may contain other substances or no active compound at all, independent verification is important in research settings. Certificates of analysis are useful but not a substitute for in-house testing.
Laboratory samples of SR9009 are typically supplied as a white to off-white powder. The compound dissolves readily in organic solvents such as dimethyl sulfoxide and ethanol, while its solubility in water is low. Because of this solubility profile, researchers often prepare concentrated stock solutions in an organic solvent before diluting them into aqueous assay buffers. Light exposure, moisture, and repeated freeze-thaw cycles can degrade many small molecules, so handling procedures usually aim to minimize these factors. Purity is commonly checked before use.
Storage conditions for research-grade SR9009 generally involve a freezer at approximately minus twenty degrees Celsius, sometimes lower for long-term preservation. Containers should remain tightly closed and protected from light. Desiccants may be used to limit moisture uptake. Solutions are often stored in aliquots to avoid repeated warming and cooling. Stability data for the compound under various conditions are limited, so laboratories typically follow supplier recommendations and verify performance through periodic analytical checks rather than assuming indefinite stability.
SR9009 binds REV-ERB receptors and alters their repressive activity on target genes. This action can change transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. In rodent studies, treated animals have shown changes in muscle oxidative capacity and exercise performance, though effects vary by dose, duration, and model. The precise molecular steps connecting receptor binding to whole-body outcomes are still an active area of investigation. Findings in animals do not automatically translate to humans.
Because REV-ERB receptors are core clock components, SR9009 has been examined for effects on daily rhythms as well as metabolism. Research has explored whether the compound can shift or reinforce circadian gene expression in tissues such as liver and muscle. Some studies report improved metabolic markers in obese or diabetic mice, while others show context-dependent responses. Questions remain about which effects are direct, which are secondary to timing, and how they might differ across species.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not an approved medicine and has no established human therapeutic use. The compound appears in scientific literature as a tool for probing circadian and metabolic regulation. Online sellers often label it as a research chemical, sometimes using the nickname Stenabolic. Its chemical identity is distinct from selective androgen receptor modulators, stimulants, and peroxisome proliferator-activated receptor delta agonists. Researchers use it mainly in cell and animal experiments.
At the molecular level, SR9009 binds REV-ERBα and REV-ERBβ and alters their repressive activity on target genes. These nuclear receptors help regulate the circadian clock, lipid synthesis, glucose metabolism, and inflammatory pathways. By changing transcription, the compound can shift the timing or magnitude of downstream metabolic processes in model systems. It does not act through androgen receptors or adenosine receptors, which distinguishes it from several substances sold for athletic performance. Whether the same transcriptional changes occur in humans at tolerable exposures remains an open question because controlled human studies are lacking.
Todd Lynn Helton (born August 20, 1973) is an American former professional baseball first baseman who played his entire 17-year Major League Baseball (MLB) career for the Colorado Rockies. A five-time All-Star, four-time Silver Slugger, and three-time Gold Glove Award winner, Helton holds the Rockies' club records for hits (2,519), home runs (369), doubles (592), walks (1,335), runs scored (1,401), runs batted in (RBIs, with 1,406), games played (2,247), and total bases (4,292), among others. Helton grew up in Tennessee and played college baseball and football for the Tennessee Volunteers. The Rockies drafted him in the first round of the 1995 MLB draft, and he debuted in the majors in 1997. During his peak from 1999 to 2004, Helton met or topped these benchmarks each season: .320 batting average, 39 doubles, 30 home runs, 107 runs scored, 96 RBI, .577 slugging percentage and .981 on-base plus slugging. In 2000, he won the batting title with a .372 average and also led MLB with a .698 slugging percentage, 59 doubles, and 147 RBI and the National League (NL) with 216 hits. Helton helped the Rockies win the NL pennant in 2007 before being swept in the World Series. He collected his 2,000th career hit in May 19, 2009 and his 2,500th on September 1, 2013. He retired at the end of that season, homering in his final game at Coors Field. Helton was inducted into the Baseball Hall of Fame in 2024, his sixth year on the ballot.
=== Currency === The new state continued to use the Pound sterling from its inception; there is no reference in the Treaty or in either of the enabling Acts to currency. Nonetheless, and within a few years, the Dáil passed the Coinage Act, 1926 (which provided for a Saorstát [Free State] coinage) and the Currency Act, 1927 (which provided inter alia for banknotes of the Saorstát pound). The new Saorstát pound was defined by the 1927 Act to have exactly the same weight and fineness of gold as was the sovereign at the time, making the new currency pegged at 1:1 with sterling. The State circulated its new national coinage in December 1928, marked Saorstát Éireann and a national series of banknotes. British coinage remained acceptable in the Free State at an equal rate. In 1937, when the Free State was superseded by Ireland (Éire), the pound became known as the "Irish pound" and the coins were marked Éire as from 1939. No coins dated 1938 were struck for circulation in Ireland, but the 1938 1 Penny and Half Crown exists as pattern coins.
== Toxicity == Studies of the acute and chronic toxicity of lithium ascorbate have shown that lithium ascorbate is characterized by an extremely low acute and chronic toxicity. In acute toxicity studies with a single dose of 3000 mg/kg of lithium ascorbate, mortality was 0%, no pathological changes were found, as well as signs of local irritant action. At 4000 mg/kg, mortality (delayed) was 20%. Intoxication in males was manifested as oppression, diarrhea, ruffled hair, bloody discharge from the nose and eyes, in females - diarrhea. Pathological changes included plethora of the meninges, edema and plethora of the lungs, hemorrhages in the lungs. For Wistar rats LD50 of lithium ascorbate was 6334 mg/kg of body weight, and LD100 was 8000 mg/kg. Thus, lithium ascorbate can be classified as class 5 "practically non-toxic compounds" (LD50> 5000 mg/kg). Compared with lithium carbonate (LD50 = 531 mg/kg), lithium ascorbate is 12 times less toxic. It is known that the anion, which forms a lithium salt, is one of the most significant factors affecting the toxicity of the salt. For example, for rats, the LD50 of lithium chloride when administered orally is 1530 mg/kg, and when administered intraperitoneally it is 925 mg/kg. For rabbits, the LD50 of the same salt is 775 mg/kg orally. The greatest acute toxicity was established for lithium fluoride (LD50=175 mg/kg, for mice), while bromide, nicotinate, oxybutyrate are much less toxic (LD50 for mice - 2200 mg/kg).
== Further reading == Rawlings ND, Barrett AJ, Bateman A. Asparagine peptide lyases: a seventh catalytic type of proteolytic enzymes. 2011 Nov 4;286(44):38321-8. Alan J. Barrett, Neil D. Rawlings, J. Fred (2012). Handbook of Proteolytic Enzymes. Third edition. ISBN 9780123822208 Guoyao Wu (2013) Amino Acids: Biochemistry and Nutrition. ISBN 9781439861899 Klaudia Brix, Walter Stöcker (Jan 21, 2014). Proteases: Structure and Function. ISBN 9783709108857 Jin Zhang, Sohum Mehta, Carsten Schultz (2016). Optical Probes in Biology. ISBN 9781466510128
Sources: en.wikipedia.org
Micrococcus, from Ancient Greek μικρός (mikrós), meaning "small", and κόκκος (kókkos), meaning "sphere", is a genus of bacteria in the Micrococcaceae family. Micrococcus occurs in a wide range of environments, including water, dust, and soil. Micrococci have Gram-positive spherical cells ranging from about 0.5 to 3 micrometers in diameter and typically appear in tetrads. They are catalase positive, oxidase positive, indole negative and citrate negative. Micrococcus has a substantial cell wall, which may comprise as much as 50% of the cell mass. The genome of Micrococcus is rich in guanine and cytosine (GC), typically exhibiting 65 to 75% GC-content. Micrococci often carry plasmids (ranging from 1 to 100 MDa in size) that provide the organism with useful traits. Some species of Micrococcus, such as M. luteus (yellow) and M. roseus (red) produce yellow or pink colonies when grown on mannitol salt agar. Isolates of M. luteus have been found to overproduce riboflavin when grown on toxic organic pollutants like pyridine.
Meyer even criticized Hutchinson publicly, prompting a meeting between the three men and team owner August Busch Jr., in which Hutchinson appealed to the owner to "Let me alone to do my job." "That thing with Mizell in Brooklyn, I just wanted to get him over a hump," Hutchinson later explained. Through July 27, Mizell had a 5.32 ERA, but his control started to improve in the middle of the year. Called on for a start on July 29, he held the Pirates to two hits in a 4–0 shutout victory. Thereafter, most of his appearances would be starts. With the second-place Cardinals trailing the NL-leading Milwaukee Braves on August 18, Mizell threw a four-hit shutout, helping the Cardinals sweep a doubleheader and remain in the pennant race. His ERA after July 27 was 2.54. In 33 games (21 starts), he had an 8–10 record, a 3.74 ERA, 87 strikeouts, and 51 walks in 149+1⁄3 innings. Over the 1957–58 offseason, Mizell practiced throwing with a steel ball. He arrived early to 1958 spring training, claiming to have lost 12 pounds from the previous spring. He had a 3–6 record entering June 21, but from that date through July 12, he won four straight games. On June 25, though he walked five batters, he allowed just three hits and one unearned run in a 3–1 victory over the Pirates. Then, on July 12, he threw a shutout in a 2–0 win over the Pirates. He had a pitching duel against Joe Nuxhall of Cincinnati in the first game of a doubleheader on September 1; Mizell prevailed 1–0, setting an NL record for most walks in a shutout with nine.
Verucerfont (GSK-561,679) is a drug developed by GlaxoSmithKline which acts as a CRF-1 antagonist. Corticotropin releasing factor (CRF), also known as Corticotropin releasing hormone, is an endogenous peptide hormone which is released in response to various triggers such as chronic stress, and activates the two corticotropin-releasing hormone receptors CRH-1 and CRH-2. This then triggers the release of corticotropin (ACTH), another hormone which is involved in the physiological response to stress. Verucerfont blocks the CRH-1 receptor, and so reduces ACTH release following chronic stress. It is under investigation as a potential treatment for alcoholism, as chronic stress is often a factor in both development of alcoholism and relapse in recovering alcoholics. It has shown promising results in animal studies. However, human trials have shown that while the neuroendocrine effects translate from animal models, the alcohol anti-craving effects do not.
Beginning in 1979 Lagin has drawn and photographed many hundreds of abstract, symbolic, representational, and schematic sand drawings; all drawn by him on smooth beach sand during early morning low tides using small sticks from plants grown in his garden with seeds collected from wild places he earlier photographed. For him inscribing his 'seeing' in the sand, as part of the earth and the world, expresses the fundamental natural presence of symbols in nature and the 'grounded-ness' of symbolic feeling and meaning." Lagin's drawings, both representational and abstract, include elemental symbols, imaginary creatures and "biomorphic and geomorphic life forms and their spiritual metaphysical ecologies", personal life scenes and maps, and symbols and visual metaphors derived from natural history, geography, geology, mathematics, electricity and electronic circuitry, physics, optics, chemistry, and from his imagination. Lagin's first oil and acrylic paintings on canvas were done between 1967 and 1970. He did no paintings between 1970 and 1982 while doing music, and all of his early physical paintings were either given away or lost in the 1982 flood in Marin County, California. In 1992 Lagin started digital (electronic) painting and drawing while resuming oil and acrylic painting and drawing on canvas, and art and sand papers. His paintings and drawings, with various forms of representation and abstraction, are of nearby seascapes, landscapes, 'desertscapes', 'homescapes', and 'creatures'.
Although overall yields are comparatively low, Lower Saxony is also an important supplier of crude oil in the European Union. Mineral products still mined today include iron. Radioactive waste is frequently transported in the area to the city of Salzgitter, for the deep geological repository Schacht Konrad and between Schacht Asse II in the Wolfenbüttel district and Lindwedel and Höfer. Manufacturing is another large part of the regional economy. Despite decades of gradual downsizing and restructuring, the carmaker Volkswagen with its five production plants within the state's borders still remains the single biggest private-sector employer, its world headquarters in Wolfsburg. Due to the Volkswagen Law, which has recently been ruled illegal by the European Union's high court, the state of Lower Saxony is still the second-largest shareholder, owning 20.3% of the company. Thanks to the importance of car manufacturing in Lower Saxony, a thriving supply industry is centred around its regional focal points. Other mainstays of the Lower Saxon industrial sector include aviation (the region of Stade is called CFK-Valley), shipbuilding (such as Meyer Werft), biotechnology, and steel. Medicine plays a major role; Hanover and Göttingen have two large University Medical Schools and hospitals, and Otto Bock in Duderstadt is the largest producer of prosthetics and associated componentry in the world. The service sector has gained importance following the demise of manufacturing in the 1970s and 1980s.
Sources: en.wikipedia.org
Mike Harrington (born 1964) is an American programmer and businessman. With Gabe Newell, he is the co-founder of the video game company Valve. After the success of the first Valve game, Half-Life (1998), Harrington left Valve in 2000. In 2005, he co-founded the photo editing service Picnik.
3,4-Methylenedioxymethamphetamine (MDMA, ecstasy, or molly) is an entactogen, euphoriant, and psychostimulant of the amphetamine class. Briefly used by some psychotherapists as an adjunct to therapy, the drug became popular recreationally and, in the United States, the DEA listed MDMA as a Schedule I controlled substance, prohibiting most medical studies and applications. MDMA is known for its entactogenic properties. The stimulant effects of MDMA include hypertension, anorexia (appetite loss), euphoria, social disinhibition, insomnia (enhanced wakefulness/inability to sleep), improved energy, increased arousal, and increased perspiration, among others. Relative to catecholaminergic transmission, MDMA enhances serotonergic transmission significantly more, when compared to similar psychostimulants like amphetamine. Due to the relative safety of MDMA, some researchers such as David Nutt have criticized the scheduling level, writing a satirical article finding MDMA to be 28 times less dangerous than horseriding, a condition he termed "equasy" or "Equine Addiction Syndrome".
H2O + ATP → H+ + ADP + Pi (Mg2+ assisted, utilization of ATP for muscle contraction by ATPase) H+ + ADP + CP → ATP + Creatine (Mg2+ assisted, catalyzed by creatine kinase, ATP is used again in the above reaction for continued muscle contraction) 2 ADP → ATP + AMP (catalyzed by adenylate kinase/myokinase when CP is depleted, ATP is again used for muscle contraction) Muscle at rest: ATP + Creatine → H+ + ADP + CP (Mg2+ assisted, catalyzed by creatine kinase) ADP + Pi → ATP (during anaerobic glycolysis and oxidative phosphorylation) When the phosphagen system has been depleted of phosphocreatine (creatine phosphate), the resulting AMP produced from the adenylate kinase (myokinase) reaction is primarily regulated by the purine nucleotide cycle.
. Chemical ionization was developed in the 1960s. Ionization of sample (analyte) is achieved by interaction of its molecules with reagent ions. The analyte is ionized by ion-molecule reactions during collisions in the source. The process may involve transfer of an electron, a proton or other charged species between the reactants. This is a less energetic procedure than electron ionization and the ions produced are, for example, protonated molecules: [M + H]+. These ions are often relatively stable, tending not to fragment as readily as ions produced by electron ionization. Matrix-assisted laser desorption/ionization (MALDI) is a soft ionization technique used in mass spectrometry, allowing the analysis of biomolecules (biopolymers such as proteins, peptides and sugars) and large organic molecules (such as polymers, dendrimers and other macromolecules), which tend to be fragile and fragment when ionized by more conventional ionization methods. It is most similar in character to electrospray ionization both in relative softness and the ions produced (although it causes much fewer multiply charged ions). The term was first used in 1985 by Franz Hillenkamp, Michael Karas and their colleagues. These researchers found that the amino acid alanine could be ionized more easily if it was mixed with the amino acid tryptophan and irradiated with a pulsed 266 nm laser. The tryptophan was absorbing the laser energy and helping to ionize the non-absorbing alanine. Peptides up to the 2843 Da peptide melittin could be ionized when mixed with this kind of "matrix".
Sources: en.wikipedia.org
Legality depends on the country and the intended use. In many places it is not approved as a medicine and may be sold only as a research chemical. Importation or possession can be restricted, and sports organizations prohibit it.
Anti-doping laboratories typically use LC-MS/MS to detect SR9009 or its metabolites in urine or blood. The exact assay depends on the laboratory and the testing program. Detection can be challenging because the compound may be rapidly metabolized and present at low levels.
Stenabolic is an informal nickname used in online fitness and research-chemical markets, not an official drug name. It likely references reported effects on endurance in rodent studies. The nickname does not imply approval or proven human benefit.
No. It is an investigational compound without approved therapeutic indications. It is sold for research purposes only in many jurisdictions.