WADA comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Last reviewed on 2026-01-29. Where a claim depends on a specific study, the study is described rather than over-claimed.
In laboratory settings, SR9009 is commonly identified by its molecular structure and its interaction with REV-ERB receptors. Vendors may list it under synonyms such as Stenabolic or REV-ERB agonist, but those names do not define purity or identity. Analytical confirmation typically uses high-performance liquid chromatography with ultraviolet detection or liquid chromatography–mass spectrometry. A reference standard is needed to compare retention time and mass spectrum, because the compound can be confused with related research chemicals.
Handling practices for SR9009 focus on minimizing degradation and contamination. The solid is generally stored desiccated at or below -20 °C, protected from light and moisture. Stock solutions are often prepared in dimethyl sulfoxide or ethanol, then aliquoted to avoid repeated freeze–thaw cycles. Aqueous solubility is low, so formulations for animal studies may require cosolvents or suspending agents. Personnel should follow institutional chemical safety procedures, because toxicological data for humans are incomplete.
Mechanistically, SR9009 binds the ligand-binding domain of REV-ERBα/β and enhances recruitment of corepressor complexes. This represses target genes rather than activating them. Because REV-ERB proteins normally compete with ROR proteins at shared response elements, the net effect depends on tissue and timing. Researchers use SR9009 to probe how nuclear receptor signaling links the clock to metabolism, inflammation, and muscle biology. Findings are largely preclinical, and the precise contribution of each receptor subtype remains under study.
SR9009 is frequently discussed in fitness and research-chemical contexts, yet it has no approved medical indication. Regulatory agencies have not authorized it for human use, and it is not a standard prescription drug. Some sports organizations list it as a prohibited substance because of its potential performance-enhancing properties. Published human data are sparse, so claims about its effects in people often rely on animal models or anecdotal reports. Quality and identity of online materials can vary widely.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white solid | Visual inspection is not sufficient for identity. |
| Solubility | Soluble in DMSO and ethanol | Low solubility in water. |
| Typical storage | -20 °C, desiccated, dark | Protect from repeated temperature changes. |
| Common analytical method | LC-MS or HPLC-UV | Reference standard required for comparison. |
| Common synonyms | SR9009; Stenabolic; REV-ERB agonist | Vendor naming may vary. |
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.
Research interest in SR9009 grew from studies of circadian biology and metabolic disease. Preclinical reports describe effects on exercise capacity, muscle metabolism, and blood lipid levels in rodents, but these findings come from controlled laboratory settings. The compound has low oral bioavailability in animals, which limits systemic exposure after swallowing. Investigators often use injected routes in experiments to achieve measurable plasma concentrations. Human clinical data are sparse, no approved therapeutic product exists, and whether animal effects translate to humans remains an open question.
Regulatory and sporting contexts treat SR9009 as a prohibited substance in many elite competitions. Its presence on banned lists reflects concerns about performance enhancement and unknown long-term safety. Analytical chemists have developed methods to detect the parent compound and its metabolites in urine and blood. Literature discussions distinguish between in vitro potency, animal pharmacology, and anecdotal human reports. The latter are difficult to verify because products sold online may lack purity or contain different compounds.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. These receptors help regulate circadian rhythms, lipid metabolism, and inflammatory gene expression. In cell and animal experiments, SR9009 alters transcription of clock-controlled genes and metabolic pathways. The compound is not a hormone and does not resemble classical steroid structures. Its activity depends on binding to the ligand-binding domain of REV-ERB, where it can modify corepressor recruitment.
(2026) report evidence from the study of carbon and oxygen stable isotope compositions of mammal fossils from the Pinturas Formation (Argentina) indicative of presence of a diverse range of habitats in Patagonia during the Miocene, and interpret the diversity of the primate assemblage from the studied formation as likely linked to habitat diversity. Cooke et al. (2026) report the first discovery of mandibular remains of Stirtonia victoriae from the La Victoria Formation (Colombia), and interpret their anatomy as indicative of leaf-eating adaptations of the studied monkey. Urciuoli et al. (2026) determine the phylogenetic relationships of early members of Catarrhini on the basis of the study of the semicircular canal and vestibule shape in Saadanius, Pliobates, Ekembo and Victoriapithecus, interpret Saadanius as most likely to be a stem catarrhine that evolved ossified tubular ectotympanic independently from crown catarrhines, and interpret pliopithecoids as most likely to be stem catarrhines closer to the crown group than Saadanius. Arias-Martorell et al. (2026) report evidence of similarities of shape of the radial head of Pliobates cataloniae and extant apes, and interpret Pliobates as better adapted to climbing than to behaviors involving forelimb-dominated suspension. Arias-Martorell et al. (2026) compare the shape of the distal part of the humerus of Pliobates cataloniae and other extinct and extant simians, and interpret Pliobates as unlikely to perform acrobatic suspensory behaviors seen in extant gibbons.
== See also == Alexis St. Martin – Canadian subject of digestion experiments (1802–1880) Fistulated cow M. Ijaiya's technique – Surgical procedure to close juxtacervical vesicovaginal fistulae Obstetric fistula Stoma (medicine)
Viscosity is measured with various types of viscometers and rheometers. Close temperature control of the fluid is essential to obtain accurate measurements, particularly in materials like lubricants, whose viscosity can double with a change of only 5 °C. A rheometer is used for fluids that cannot be defined by a single value of viscosity and therefore require more parameters to be set and measured than is the case for a viscometer. For some fluids, the viscosity is constant over a wide range of shear rates (Newtonian fluids). The fluids without a constant viscosity (non-Newtonian fluids) cannot be described by a single number. Non-Newtonian fluids exhibit a variety of different correlations between shear stress and shear rate. One of the most common instruments for measuring kinematic viscosity is the glass capillary viscometer. In coating industries, viscosity may be measured with a cup in which the efflux time is measured. There are several sorts of cup—such as the Zahn cup and the Ford viscosity cup—with the usage of each type varying mainly according to the industry. Also used in coatings, a Stormer viscometer employs load-based rotation to determine viscosity. The viscosity is reported in Krebs units (KU), which are unique to Stormer viscometers. Vibrating viscometers can also be used to measure viscosity. Resonant, or vibrational viscometers work by creating shear waves within the liquid. In this method, the sensor is submerged in the fluid and is made to resonate at a specific frequency.
Mark (1943), former U.S. ambassador to Burundi J. Owen Zurhellen, Jr. (1943), first U.S. ambassador to Suriname Christian H. Armbruster (1944), member of the New York State Assembly and the New York State Senate Harold Brown (1945), U.S. secretary of defense and president of the California Institute of Technology Albert Burstein (1947), Democratic Party politician and former Majority leader of the New Jersey General Assembly Edward N. Costikyan (1947), Democratic Party politician and reformer who oversaw the dismantling of Tammany Hall; partner at Paul, Weiss, Rifkind, Wharton & Garrison Gardiner L. Tucker (1947), former director of IBM Research and assistant secretary of defense for System Analysis, assistant secretary general of NATO Jonathan Dean (1948), U.S. representative for Mutual and Balanced Force Reductions negotiations 1979–1981 Roy H. McVicker (1948), U.S. congressman for Colorado's 2nd congressional district Monteagle Stearns (1948), former U.S. ambassador to Ivory Coast and U.S. ambassador to Greece Eugene Rossides (1949), lobbyist, football player drafted by the New York Giants in 1949, founder of the American Hellenic Institute, former U.S. assistant secretary of the treasury Donald A. Beattie (1951), assistant secretary for Conservation and Solar Applications in the United States Department of Energy and assistant administrator of the Energy Research and Development Administration Lawrence Pezzullo (1951), former U.S. ambassador to Uruguay, Nicaragua, and special envoy to Haiti; executive director of Catholic Relief Services 1983–1992 Eric M.
Sources: en.wikipedia.org
=== Dosage === Adult: Each tablet contains flupentixol 0.5 mg and melitracen 10 mg. The usual adult dose is one tablet in the morning and one at midday; in severe cases the morning dose may be increased to two tablets. The maximum recommended dose is four tablets per day. Elderly: The usual starting dose is one tablet in the morning; in severe cases, one tablet may also be given at midday.
24 May – Andrew Shaw, children's television presenter, television director and producer (South Pacific Television, TVNZ), and media executive (TVNZ, South Pacific Pictures, NZ On Air) (born 1957). 29 May – David Trist, cricketer (Canterbury) and cricket coach (Eastern Province, national team) (born 1947). 30 May – John Pike, lawyer, King's Counsel (since 2013) (born 1944).
== Ion exchange SPE == Ion exchange sorbents separate analytes based on electrostatic interactions between the analyte of interest and the positively or negatively charged groups on the stationary phase. For ion exchange to occur, both the stationary phase and sample must be at a pH where both are charged.
Sources: en.wikipedia.org
While working at St Mary's Hospital, London, in 1928, a Scottish physician, Alexander Fleming, was investigating the pattern of variation in S. aureus. He was inspired by the discovery of an Irish physician, Joseph Warwick Bigger, and his two students, C.R. Boland and R.A.Q. O’Meara, at Trinity College, Dublin, in 1927. Bigger and his students found that when they cultured a particular strain of S. aureus, which they had designated "Y" and isolated a year earlier from the pus of a patient's axillary abscess, the bacterium grew into a variety of strains. They published their discovery as "Variant colonies of Staphylococcus aureus" in The Journal of Pathology and Bacteriology, concluding:
(the Legendre function of order 1/2). Taylor's derivation is based on two assumptions: (1) that the surface of the cone is an equipotential surface and (2) that the cone exists in a steady-state equilibrium. To meet both of these criteria, the electric field must have azimuthal symmetry and have
Major intrinsic proteins (MIPs) comprise a large superfamily of transmembrane protein channels that are grouped together on the basis of homology. The MIP superfamily includes three subfamilies: aquaporins, aquaglyceroporins and S-aquaporins.
==== Wittig-Still rearrangement ==== The 2,3-Wittig rearrangement is a useful carbon-carbon bond forming reaction that transforms an allyl ether into a homoallylic alcohol. However, a significant limitation of this reaction is the difficulty in forming the alkoxy-substituted carbanion which initiates the 2,3-sigmatropic rearrangement. Traditionally, this required the use of a strong base and the presence of a stabilizing group to enable deprotonation of the ether substrate. In 1978, Still dramatically increased the scope of the 2,3-Wittig rearrangement by introducing an organotin-substituted ether as a precursor to the alkoxy-substituted carbanion. In this procedure, transmetalation of the organotin group can be achieved chemoselectively at low temperature using n-butyllithium to form an alpha-lithiated ether that undergoes the desired 2,3-sigmatropic rearrangement. This variation of the traditional 2,3-Wittig reaction is known as the Wittig-Still rearrangement.
Sources: en.wikipedia.org
Liquid chromatography–mass spectrometry is common for identity and purity checks. High-performance liquid chromatography with ultraviolet detection can also be used. Both methods require a suitable reference standard.
The solid is usually kept desiccated at -20 °C or lower and protected from light. Stock solutions are aliquoted to limit freeze–thaw cycles. Aqueous solutions are not generally recommended for long-term storage.
Laws differ by country and by intended use. It is not an approved medicine, and many vendors sell it as a research chemical. Purchasers are responsible for confirming local restrictions.
SR9009 is a synthetic compound investigated as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is used in preclinical research on circadian rhythm and metabolism. It is not an approved drug.