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 2025-12-27. Numbers and descriptions here follow the published literature rather than marketing material.
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.
Analytical identification and purity assessment often use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Liquid chromatography–tandem mass spectrometry is used to detect and quantify SR9009 in biological matrices, including urine and blood, for anti-doping or pharmacokinetic studies. Nuclear magnetic resonance spectroscopy can confirm molecular structure. Stability depends on form and storage: the solid is generally more stable than solutions, and repeated freeze–thaw cycles may degrade samples. Purity is typically reported as a percentage from a certificate of analysis.
Regulatory treatment of SR9009 varies by country and context. It is not approved as a therapeutic drug by agencies such as the United States Food and Drug Administration or the European Medicines Agency. Sports authorities list it as a prohibited substance; the World Anti-Doping Agency classifies it among hormone and metabolic modulators. Legal status for personal possession or sale differs across jurisdictions, and some countries may restrict it under analog or research chemical laws. Buyers who seek verified material often rely on independent laboratory testing because online product labels may not match contents.
| 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 |
Pharmacokinetic data for SR9009 are limited in published literature. Some reports indicate low oral bioavailability and rapid clearance in animals, which complicates interpretation of exposure and effect. Researchers often use injected routes in preclinical work to achieve measurable systemic levels. Analytical studies rely on mass spectrometry to detect the parent compound and its metabolites. Questions about tissue distribution, active metabolites, and long-term consequences remain open. Species differences in metabolism can affect observed half-life and target engagement.
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 and metabolic gene expression. In laboratory experiments, SR9009 binds these receptors and alters transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. It is not a naturally occurring compound and has no approved therapeutic use. Research interest stems from its ability to modify energy metabolism in cells and animal models.
In rodent studies, SR9009 has been reported to increase mitochondrial content in skeletal muscle and improve exercise endurance under some conditions. These findings led to popular descriptions such as an exercise mimetic, although that term oversimplifies the biology. Effects vary by dose, timing, tissue, and model. The compound's influence on circadian pathways means that time of administration can matter in experiments. Whether similar metabolic changes occur in humans remains largely unexplored in controlled published trials.
REV-ERB proteins typically suppress gene expression by recruiting corepressor complexes to DNA response elements. SR9009 binds these receptors and strengthens that repressive action in cell-based assays. Studies in rodents have reported changes in lipid handling, mitochondrial function, and exercise capacity after treatment. Such findings are often cited as evidence for metabolic effects, but species differences and limited pharmacokinetic data make direct translation to humans uncertain. Researchers continue to examine which effects are robust and which depend on specific experimental conditions.
SR9009 is frequently discussed alongside other REV-ERB ligands, including synthetic agonists and natural heme-related molecules. Its selectivity for REV-ERB over related nuclear receptors has been measured in binding and reporter assays, though off-target activity at higher concentrations is possible. The compound is prohibited in sport by the World Anti-Doping Agency, and it is not approved for any medical use in major jurisdictions. Products sold online may be labeled as research chemicals, and their identity and purity are not guaranteed by regulatory review.
=== Legal action === In May 2019, in the first successful prosecution of top pharmaceutical executives for crimes related to the prescribing of opioids, the founder and four former executives of Insys Therapeutics Inc. were convicted by a federal jury in Boston in connection with bribing medical practitioners to prescribe Subsys, a highly-addictive sublingual fentanyl spray intended for cancer patients experiencing breakthrough pain, and for defrauding Medicare and private insurance carriers. The company declared bankruptcy about two weeks after they lost the case. Dozens of states are suing pharmaceutical companies, accusing them of causing the epidemic. Suits filed by almost 2,000 cities, counties, and tribal lands have been rolled into a single federal case scheduled to be heard in Fall 2019. In the first state case to reach a decision, on August 26, 2019, Oklahoma district court judge Thad Balkman found the pharmaceutical company Johnson & Johnson responsible for creating a "public nuisance" under state law, and ordered the company to pay a fine of $572 million. The company said they will appeal. Two other drug makers had previously settled with the state of Oklahoma. Purdue Pharma, the maker of OxyContin, agreed to a fine of $270 million in March 2019, and Teva Pharmaceuticals, which makes generic drugs, agreed to pay $85 million in May.
===== Pharmacodynamics ===== Flibanserin contains centrally active piperazine/benzimidazole-derived molecules, that aim to limit forskolin-stimulated cAMP production. Thus, eliminating the phosphatidyl-inositol turnover, which 5-HT stimulates typically in the brain cortex. However, the precise mechanism is oblique. It is estimated that the drug targets brain regions, especially in the medial prefrontal cortex, hypothalamus, limbic regions, and brainstem.
==== Stability ==== According to Sassen (1997) the role of hydrates at chemosynthetic communities has been greatly underestimated. The biological alteration of frozen gas hydrates was first discovered during the MMS study entitled "Stability and Change in Gulf of Mexico Chemosynthetic Communities". It is hypothesized that the dynamics of hydrate alteration could play a major role as a mechanism for regulation of the release of hydrocarbon gases to fuel biogeochemical processes and could also play a substantial role in community stability. Recorded bottom-water temperature excursions of several degrees in some areas such as the Bush Hill site (4–5 °C at 500-metre (1,600-foot) depth) are believed to result in dissociation of hydrates, resulting in an increase in gas fluxes (MacDonald et al., 1994). Although not as destructive as the volcanism at vent sites of the mid-ocean ridges, the dynamics of shallow hydrate formation and movement will clearly affect sessile animals that form part of the seepage barrier. There is potential of a catastrophic event where an entire layer of shallow hydrate could break free of the bottom and considerably affect local communities of chemosynthetic fauna. At deeper depths (>1,000 metres (3,300 feet)), the bottom-water temperature is colder (by approximately 3 °C) and undergoes less fluctuation. The formation of more stable and probably-deeper hydrates influences the flux of light hydrocarbon gases to the sediment surface, thus influencing the surface morphology and characteristics of chemosynthetic communities.
=== Season 3: 2009 === The title for the season is: 诸子百家 Zhu Zi Bai Jia (Masters of the Hundreds of Schools), the word "Hundred" here means many instead of an accurate number. The expression is the classical description for the diverse intellectual life of the Warring States period of Chinese history. The third season was finished in 2009 and aired in 2010, it consists of 34 episodes.
Sources: en.wikipedia.org
Mass spectrometry (MS) represents one of the main technologies for quantitative proteomics with advantages and disadvantages. Quantitative MS has higher sensitivity but can provide only limited information about the intact protein. Quantitative MS has been used for both discovery and targeted proteomic analysis to understand global proteomic dynamics in populations of cells (bulk analysis) or in individual cells (single-cell analysis). Early approaches developed in the 1990s applied isotope-coded affinity tags (ICAT), which uses two reagents with heavy and light isotopes, respectively, and a biotin affinity tag to modify cysteine containing peptides. This technology has been used to label whole Saccharomyces cerevisiae cells, and, in conjunction with mass spectrometry, helped lay the foundation of quantitative proteomics. This approach has been superseded by isobaric mass tags, which are also used for single-cell protein analysis.
In February 2019, Sergey Lavrov stated that the withdrawal from the INF Treaty would not lead to "a new Cold War". The Russian news agency TASS reported the Russian Foreign Minister Sergey Lavrov stating: "I don't think that we should talk about a new Cold War", adding that the US development of low-yield nuclear warheads (the first of which entered production in January 2019) had increased the potential for the use of nuclear weapons. Speaking to the press in Berlin on 8 November 2019, a day before the 30th anniversary of the fall of the Berlin Wall, US secretary of state Mike Pompeo warned of the dangers posed to the West by Russia and China. He said: "Today, Russia – led by a former KGB officer once stationed in Dresden [Vladimir Putin] – invades its neighbours and slays political opponents". Jonathan Marcus of the BBC opined that Pompeo "appeared to be declaring the outbreak of a second [Cold War]".
==== Season 4 ==== Months later, Logan remains estranged from his children. On the eve of the GoJo acquisition, Sandi and Stewy convince the siblings to delay the board vote to increase the price of the sale, forcing Logan to attempt reconciliation with his children. Kendall and Shiv refuse to budge, unsuccessfully demanding an apology from their father for his betrayal and his cruel parenting. Logan is then left no choice but to go to Sweden to renegotiate the deal with Matsson, but he suddenly dies on the flight from a pulmonary embolism, with only Tom and some of his other senior team by his side. Tom phones the children - who are attending Connor's wedding - to give them a chance to say goodbye. The plane is turned around and Logan is pronounced dead on arrival; the siblings make a statement announcing his death to the press, then watch as his body is removed from the plane. During Logan's wake, an undated document is found in his safe naming Kendall his successor upon his death, with several pencil addenda included, including a strike on "Kendall Roy" that could be either underlining or crossing-out the name. Kendall and Roman eventually decide to run the company together as co-CEOs, since the company's succession plan formally dictated leadership be passed down to COO - Roman's role at the time.
== Projects == Oncocheck ONCOCHECK is a set of clinical studies conducted by Life Length during 2017. The aim of the project was the clinical validation of telomere-associated variables (TAVs) as cancer biomarkers. It involved more than 1,200 adults and 300 children suffering from one of multiple existing types of cancer, including breast, prostate, lung, and leukemia cancers, among others. ONCOCHECK received funding from the European Union's Horizon 2020 research and innovation program. With more than 7,000 peer-reviewed scientific and clinical publications, telomere length measurement has established itself as a biomarker in cancer diagnosis and prognosis. This project has the invaluable support of some of the most important hospitals in Spain such as "University Hospital 12 de octubre", "University Hospital Puerta de Hierro", "University Hospital Niño Jesús", "Vall d'Hebron Hospital", and "Centro Integral Oncológico Clara Campal (CIOCC)". Within the ONCOCHECK project, Life Length is also conducting studies in advanced solid tumors and chronic lymphocytic leukemia (CLL). The results of the ONCOCHECK project have enabled Life Length to develop new applications in oncology . Prostate cancer diagnosis product Telomeres as cancer biomarkers: Tumor cells work differently from normal cells. As a cell becomes cancerous, it divides more frequently, and its telomeres shorten faster. Cancer cells avoid senescence/death and instead become immortal with the ability to replicate indefinitely, even when telomeres are short.
==== The tandem principle ==== The solution emerged from a charge-reversal concept proposed demonstrated by Nobel laureate Luis Alvarez in 1951. Rather than accelerate positive ions from ground to a high-voltage terminal, the tandem accelerator begins with negative ions. These particles accelerate toward a positive terminal, where a thin foil or gas stripper removes multiple electrons, converting them to positive ions. The now-positive particles accelerate away from the terminal back to ground potential. This double acceleration effectively multiplies the particle energy without requiring proportionally higher terminal voltages. A negative hydrogen ion accelerated through a 5 megavolt tandem emerges with 10 megavolts of kinetic energy. After commissioning tandem production in 1954, Atomic Energy of Canada Limited placed HVEC's first tandem order in September 1956 for $0.92M (equivalent to $10.89M in 2025). The machine achieved first beam at HVEC's Burlington facility in June 1958.
Sources: en.wikipedia.org
== Sustainability == Sustainability has become a major policy objective in South Africa's logistics sector. Because road freight dominates the country's land freight system, most sustainability initiatives focus on reducing emissions from trucking, while increasing the use of rail. 2025 research on the Gauteng province's freight industry showed that many road freight companies are adopting green logistics practices, primarily through increased operational efficiency. Measures include route optimization, higher vehicle utilization and backhauling, lower-emission trucks, the use of alternative fuels, and the electrification of suitable fleets. South Africa's warehouses and logistics facilities are increasingly incorporating rooftop solar photovoltaic systems, battery storage systems, electric material-handling equipment, and energy-efficient refrigeration. Energy efficient warehousing is one of the fastest-growing sustainability measures in the South African logistics sector. Sustainable freight corridors continue to be developed in South Africa. A network of off-grid solar-powered charging infrastructure for heavy-duty electric trucks is being rolled out along major highways, by Cape Town-based company Charge. The EV charging network operator, founded in 2021, is installing 120 charging stations, designed specifically for electric trucks. The chargers are planned to be located along the N3 freight corridor between Johannesburg and Durban, with future expansion planned along the N1 corridor.
lanthanum barium copper oxide (LB–CO), TC = −240 °C (35 K). yttrium barium copper oxide (YB–CO), TC = −215 °C (93 K). bismuth strontium calcium copper oxide (BiSC–CO), TC = −180 °C (95 K). thallium barium calcium copper oxide (TBC–CO), TC = −150 °C (125 K). mercury barium calcium copper oxide (HGBC–CO) 1993, with TC = −140 °C (133 K), currently the highest cuprate critical temperature. In 2018, the full three dimensional Fermi surface structure was derived from soft x-ray ARPES.
== Challenges and limits == Measuring beta-cell function requires the rate of secretion to be interpreted in relation to the prevailing glucose concentration. Therefore, a mathematical model is needed that links the time courses of insulin secretion and glucose concentration as a mechanistic causal relationship.
Faced with possibility of ongoing player boycotts – including a potential boycott of the following month's Brownlow Medal count, which was televised by Seven – the Seven Network issued a statement regretting any harm the broadcast may have caused to the AFL, the clubs and the players, and promised not to broadcast or reveal any of the details of the medical records in future. The AFLPA, which had previously demanded an apology from the network over the incident, said that it understood why Seven could never issue a full apology "for legal reasons" and that it would be taking the "statement of regret" as an apology instead. The player boycott has since been lifted. The woman who found the medical records and a male accomplice were charged with "theft-by-finding" and faced Heidelberg Magistrates' Court on 6 December 2007. They subsequently pleaded guilty and were sentenced to a 12-month good behaviour bond and ordered to pay the money they received from Channel 7 into a court fund.
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.
Legality depends on the country and the intended use. In many places it is sold as a research chemical, but sports and medicine regulations restrict it.