A practical reference on anti-doping: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2026-02-09 and is reviewed periodically as new material appears.
At the molecular level, SR9009 binds the ligand-binding domain of REV-ERB and strengthens recruitment of corepressor proteins such as NCoR and HDAC3. This increases repression of target genes, including Bmal1 and other clock-controlled and metabolic genes. In rodent studies, such changes have been linked to altered lipid handling, glucose metabolism, and energy expenditure. The precise chain of events between receptor binding and whole-body effects remains an active area of research. Findings in animals do not automatically translate to humans.
Laboratory studies often administer SR9009 by injection because oral absorption appears poor in rodents. Reported pharmacokinetic properties include rapid metabolism and low systemic exposure after oral dosing. Human pharmacokinetic data are sparse, so absorption, distribution, metabolism, and excretion in people are not well defined. Some research explores related REV-ERB compounds with improved drug-like properties. Regulatory approval for any REV-ERB agonist as a human medicine has not been granted to date.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ, also called NR1D1 and NR1D2. These receptors help regulate circadian rhythms and metabolic gene programs. The compound was developed for laboratory research, not as an approved therapeutic. Its identity is distinct from steroid hormones and selective androgen receptor modulators. Scientific interest centers on how REV-ERB activation changes gene expression in cells and animal models.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not a steroid, peptide, or natural hormone. In scientific literature, it appears under the code SR9009 and in non-scientific contexts as Stenabolic. The compound was identified through chemical screening efforts aimed at targeting circadian clock components. Its status remains investigational, and no regulatory agency has approved it as a human medicine.
REV-ERB proteins help regulate daily cycles in gene expression, including genes tied to lipid and glucose metabolism. SR9009 binds these receptors and alters their activity in cell and animal experiments. Consequences observed in rodents include changes in skeletal muscle oxidative capacity, blood lipid levels, and exercise performance. The precise chain from receptor occupancy to whole-body effects is still an active area of study. Human responses cannot be assumed from rodent data.
Most published work on SR9009 consists of preclinical studies. It is widely sold as a research chemical, a category that does not imply safety, efficacy, or pharmaceutical-grade quality. Sports anti-doping organizations have listed SR9009 as a prohibited substance, and its presence in an athlete sample can lead to sanctions. Legal status differs by country; in several jurisdictions it is not approved for human consumption and may be treated as an unapproved new drug.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic small molecule | Studied as a REV-ERB agonist |
| Molecular formula | C20H24ClN3O4S | Reported for the neutral compound |
| Appearance | Off-white to pale yellow solid | Typical research-grade material |
| Solubility | Sparingly soluble in water | Soluble in solvents such as DMSO |
| Common synonyms | SR9009; Stenabolic | Stenabolic is an informal alias |
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.
Regulatory status varies by country and intended use. Major drug agencies have not granted marketing authorization for SR9009 as a medicine, and it is not listed as a controlled substance in many jurisdictions. It is often sold as a research chemical, a category that may fall outside pharmaceutical manufacturing rules. Buyers should verify local laws and supplier documentation, including certificates of analysis. The lack of standardized quality controls raises concerns about identity, purity, and actual content in products marketed online.
Detection of SR9009 in biological samples usually employs liquid chromatography coupled with tandem mass spectrometry. This method can identify the parent compound and sometimes metabolites in urine or blood. Because exposure can be low and clearance may be rapid, sample timing and limits of detection matter. Laboratories validate assays for sensitivity and specificity. Results are interpreted alongside chain-of-custody and quality-control records. Urine is the common matrix for anti-doping analysis, while blood may be used in research settings.
Handling recommendations for SR9009 in a laboratory setting include storing the solid at low temperature, protected from light and moisture. The compound is often dissolved in dimethyl sulfoxide or ethanol for experiments. Solutions should be prepared with appropriate personal protective equipment and disposed of according to local rules. Stability data for long-term storage are limited, so stock solutions are typically kept cold and used within defined periods. Records of preparation date and concentration support reproducibility.
SR9009 is supplied as a solid research chemical, often in milligram quantities. Laboratories typically weigh it in a controlled environment because fine powders can disperse. Stock solutions are commonly prepared in dimethyl sulfoxide and stored in small aliquots to reduce freeze-thaw cycles. Personal protective equipment and chemical fume hoods are standard when handling unknown or potent compounds. These practices address laboratory safety rather than human use.
Identity and purity of SR9009 samples are usually checked with chromatographic and spectrometric methods. High-performance liquid chromatography can separate the compound from related impurities, while mass spectrometry provides molecular mass confirmation. Nuclear magnetic resonance spectroscopy may be used for structural verification in research settings. No single method proves biological activity, and certificates of analysis should be reviewed alongside raw data. Independent testing is often needed because online products vary widely.
SR9009 stability depends on temperature, moisture, light, and solvent. Solid material is generally kept cool and dry, while solutions may require protection from repeated warming and cooling. Degradation can appear as color changes, precipitate, or new chromatographic peaks. Researchers should follow supplier instructions and their own stability data. Long-term storage conditions for human use have not been established because the compound lacks approved clinical formulation.
Hierarchies based on 'naturally' forming family, social and cultural traditions; 'Tight-knit' focus of activity/labor; Fraternal or nepotistic value systems; Personalized activity; including family rivalries, territorial disputes, recruitment and training of family members, etc.; Entrenched belief systems, reliance of tradition (including religion, family values, cultural expectations, class politics, gender roles, etc.); and, Communication and rule enforcement mechanisms dependent on organizational structure, social etiquette, history of criminal involvement, and collective decision-making.
=== Case report form design === The case report form (CRF) is the data collection tool for the clinical trial and can be paper or electronic. Paper CRFs will be printed, often using No Carbon Required paper, and shipped to the investigative sites conducting the clinical trial for completion after which they are couriered back to Data Management. Electronic CRFs enable data to be typed directly into fields using a computer and transmitted electronically to Data Management. Design of CRFs needs to take into account the information required to be collected by the clinical trial protocol and intended to be included in statistical analysis. Where available, standard CRF pages may be re-used for collection of data which is common across most clinical trials e.g. subject demographics. Apart from CRF design, electronic trial design also includes edit check programming. Edit checks are used to fire a query message when discrepant data is entered, to map certain data points from one CRF to the other, to calculate certain fields like Subject's Age, BMI etc.. Edit checks help the investigators to enter the right data right at the moment data is entered and also help in increasing the quality of the Clinical trial data.
Ions can be created in an inductively coupled plasma, which is a plasma source in which the energy is supplied by electrical currents which are produced by electromagnetic induction, that is, by time-varying magnetic fields.
Sources: en.wikipedia.org
These species feature elements from groups I, II, III, IV, V, VI, VII, 0 (excluding hydrogen) of the periodic table. Due to their often similar reactivity, the elements in group 3 (Sc, Y, and La) and group 12 (Zn, Cd, and Hg) are also generally included, and the lanthanides and actinides are sometimes included as well. Main group compounds have been known since the beginnings of chemistry, e.g., elemental sulfur and the distillable white phosphorus. Experiments on oxygen, O2, by Lavoisier and Priestley not only identified an important diatomic gas, but opened the way for describing compounds and reactions according to stoichiometric ratios. The discovery of a practical synthesis of ammonia using iron catalysts by Carl Bosch and Fritz Haber in the early 1900s deeply impacted mankind, demonstrating the significance of inorganic chemical synthesis. Typical main group compounds are SiO2, SnCl4, and N2O. Many main group compounds can also be classed as "organometallic", as they contain organic groups, e.g., B(CH3)3. Main group compounds also occur in nature, e.g., phosphate in DNA, and therefore may be classed as bioinorganic. Conversely, organic compounds lacking (many) hydrogen ligands can be classed as "inorganic", such as the fullerenes, buckytubes and binary carbon oxides.
== Course of the Wars of Independence (1810-1833) == Irreconcilable visions of how to reconstitute the lost unity led to a war that spread across the entire continent. At the end of 1810, the captive Ferdinand VII of Spain was recognized as a king subordinate to popular sovereignty by the Cortes of Cádiz and by several of the governing juntas, each in the territories under its control. The governing juntas across America wanted to reinstate Ferdinand VII as king subordinate and refused to accept the authority of the Council of Regency that was established with the dissolution of the Supreme and Central Governmental Junta of Spain and the Indies. In agreement on this, a military conflict arose between Royalists and Patriots over the unity or independence of the empire. In 1814 following the defeat of Napoleon and the restoration of the throne by the Treaty of Valençay, Ferdinand VII reimposed absolute monarchy through a coup d'état. He was able to defeat and repress the peninsular liberals, and abolished the liberal Constitution of Cadiz, although he could not defeat the revolutionaries in Spanish America, who resisted and formed their own national congresses. The Spanish navy had collapsed in the war against Napoleon, so therefore, in practice, it did not support the expeditionary forces who arrived in small groups. In 1820 Rafael del Riego led the Spanish army in revolt against absolutism, which began a period of Liberal rule known as the Trienio Liberal and ended the threat of invasion against the Río de la Plata.
In April 2022, the FDA released draft guidance on its policy regarding products labeled as dietary supplements that contain N-acetyl-L-cysteine. Amazon subsequently re-listed NAC products as of August 2022.
Sources: en.wikipedia.org
digital interfaces like I2C, SPI, or UART enable the direct interconnection of a digital sensor and a computer, and an unlimited number of configurations to show measurements in real-time over the internet, process data, plot charts, and diagrams...
Yet the presumed causes of the uprising did not translate uniformly into actual rebellion. The rebel leaders proclaimed no coherent articles of faith that presaged a new political system. Crucially, many regions of India—including the Punjab, the Madras and Bombay presidencies—did not join the rebellion, thereby ensuring its ultimate defeat; neither did the Bengali intelligentsia, nor the major princely states. After the rebellion was suppressed in 1858, the East India Company was disbanded, and the British government assumed direct administration of India. Proclaiming a unitary state and a gradual but limited British-style parliamentary system, the new rulers also protected princes and landed gentry as a feudal safeguard against future unrest. In the decades following, a more organised public life gradually emerged across India, eventually leading to the founding of the Indian National Congress in 1885. Rapid commercialisation of agriculture in the second half of the 19th century brought severe economic setbacks, leaving many small farmers dependent on the uncertainties of distant markets. This period saw a rise in the frequency of large-scale famines; moreover, despite the risks of infrastructure development being borne by Indian taxpayers, little industrial employment was generated for the local population. However, commercial cropping, especially in the newly canal-irrigated Punjab, did increase food production for internal consumption.
===== Heart ===== In 2024, researchers were able to 3D print a human heart with a biphasic bioink containing pluripotent stem cells (PSC). The technique they proposed and tested would first print the external features of the organ before then printing the internal features such as internal vasculature inside the previously printed structure. Both sets of printing were performed by extruding the bioink filament into layered structures set in a microgel medium. This technique was called the "SPIRIT" technique and allowed for the printing of a full-sized heart at significantly faster speeds than previous methods.
== Dietary sources == NMN is found in fruits and vegetables such as edamame, broccoli, cabbage, cucumber and avocado at a concentration of about 1 mg per 100g, making these natural sources impractical to acquire the quantities needed to accomplish the dosing.
Sources: en.wikipedia.org
SR9009 is a synthetic research compound that activates the REV-ERBα and REV-ERBβ nuclear receptors. It is not an approved drug and has no established human therapeutic use. Most published biological data come from cell and rodent studies.
No. SR9009 is frequently mislabeled as a SARM in online discussions, but it does not target androgen receptors. Its known mechanism involves REV-ERB nuclear receptors and circadian-metabolic gene regulation.
Human clinical data are very limited. There is no approved human use, and safety and efficacy in people are not established. Most evidence comes from preclinical models, so effects observed in animals may not apply to humans.
It is a synthetic compound studied as an agonist of REV-ERB nuclear receptors. It is not an approved medicine and has mainly been examined in laboratory and animal research.