This is a working overview of LC-MS/MS, written for readers who want more than a one-paragraph summary but less than a textbook.
This page was last updated on 2026-03-24 and is reviewed periodically as new material appears.
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 not approved as a medicine by major regulatory agencies. It is commonly sold as a research chemical, a category that may fall outside customary drug approval and quality rules. In sports, the World Anti-Doping Agency lists SR9009 as a prohibited substance. Athletes who use it can face sanctions if it is detected in a sample. Legal status varies by country, and importation may be restricted. Enforcement practices differ across borders.
Analytical methods for SR9009 typically rely on liquid chromatography coupled with tandem mass spectrometry. The technique can separate the parent compound from related substances and detect low concentrations in biological matrices. Urine and blood are common samples in anti-doping testing, while in vitro studies may use cell culture media. Rapid metabolism and low expected concentrations make method validation important for reliable identification. Exact metabolite patterns can vary by species and are not fully mapped.
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 as a medicine in major jurisdictions | Sold as a research chemical; legal status varies |
| Anti-doping status | Prohibited by the World Anti-Doping Agency | Listed under non-approved substances or related category |
| Typical analytical method | LC-MS/MS | Used for detection and confirmation in biological samples |
| Storage temperature | −20 °C or lower for solid | Desiccated and protected from light |
| Common solution solvents | DMSO; ethanol | Aqueous solubility is limited |
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.
Laboratory samples of SR9009 are typically handled as research chemicals rather than pharmaceuticals. Suppliers usually state that the material is for research use only and not for human or veterinary administration. Storage recommendations generally call for a freezer at approximately −20 °C, protection from light, and a desiccated environment. The solid is often described as a white to off-white powder. Solubility is commonly reported in organic solvents such as dimethyl sulfoxide and ethanol, with low solubility in water.
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.
Preclinical reports describe effects on exercise endurance, mitochondrial content, and lipid profiles in rodents, but these findings come from specific experimental conditions. Many studies use high doses or delivery methods that may not translate directly to human use. SR9009 has been reported to have low oral bioavailability and a short half-life, which complicates interpretation of oral dosing studies. It is not established as safe or effective for any indication. Literature discussions often separate its pharmacological mechanism from unverified claims made in fitness and supplement markets.
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.
== Concept == In 1975, Pizza Hut began testing concepts with Applegate's Landing. with restaurants that featured Colonial-style exteriors and eclectic interiors that included a truck with a salad bar in the bed. The chain offered much of the same pizza and pasta dishes, with some additions like hamburgers and bread pudding. Applegate's Landing went defunct in the mid-1980s except for one location in McPherson, Kansas, that closed in late 1995.
== Expression == Thy-1 expression varies between species. Amongst the cells reported to generally express Thy-1 are thymocytes (precursor of T cells in the thymus) & CD34(+) prothymocytes; neurons, mesenchymal stem cells, hematopoietic stem cells, NK cells, murine T-cells, endothelium (mainly in high endothelial venules or HEVs where diapedesis takes place), renal glomerular mesangial cells, circulating metastatic melanoma cells, follicular dendritic cells (FDC), a fraction of fibroblasts and myofibroblasts.
== Functions == NonO is involved with many nuclear processes and binds to both DNA and RNA. As with all DBHS proteins, NonO is described as a multifunctional nuclear protein. NonO is implicated in many biological functions including pre-mRNA splicing, activation of transcription, termination of transcription, DNA unwinding and pairing, and maintaining correct circadian clock function. NonO binds with the Rasd1 protein, and the resulting dimer is hypothesized to modulate the function of NonO to downregulate the expression of the CREB genes NR4A1 and NR4A2. NonO binds to SFPQ to form a heterodimer that interacts with the MATR3 protein. The interaction of these three proteins may be part of the process in the nucleus that is responsible for the retention of RNAs that are defective, not yet mature enough to be exported, or are designed to be retained in nucleus.
Sources: en.wikipedia.org
House Ethics Committee announces that they have opened an investigation into Rep. Matt Gaetz (R – FL) over sexual misconducts and federal sex-trafficking. During his show, Tucker Carlson argued that the Democratic Party "is trying to replace the current electorate, the voters now casting ballots, with new people, more obedient voters from the Third World". He also said, "Everyone wants to make a racial issue out of it, 'Ooh, the white replacement theory.' No, no, no, this is a voting rights question. I have less political power because they are importing a brand-new electorate. Why should I sit back and take that?" The Anti-Defamation League (ADL) and others said that Carlson was endorsing the Great Replacement, a white nationalist conspiracy theory that claims white people are being systemically replaced through declining white birth rates and high rates of immigration. In an open letter to Fox News, ADL CEO Jonathan Greenblatt called for the network to fire Carlson. April 11 Killing of Daunte Wright – A police officer in Brooklyn Center, Minnesota, a suburb of Minneapolis, killed a black man during an attempted arrest following a traffic stop, leading to rioting and looting in the city in the subsequent days. The protests later spread to the surrounding area and other cities and states, as far away as Portland, Oregon. The suspect, Officer Kim Potter, later resigned and was charged with second-degree manslaughter. COVID-19 pandemic – California surpasses 60,000 deaths from COVID-19. April 12 COVID-19 drug development – The U.S.
John Neely Kennedy (born November 21, 1951) is an American politician and attorney who has served as the junior United States senator from Louisiana since 2017. A member of the Republican Party, he served as the Louisiana State Treasurer from 2000 to 2017, as Secretary of the Louisiana Department of Revenue from 1996 to 1999, and as special counsel and then cabinet member to Governor Buddy Roemer from 1988 to 1992. Born in Centreville, Mississippi, Kennedy graduated from Vanderbilt University and the University of Virginia School of Law, and earned a law degree from the University of Oxford. In 1988, Governor Buddy Roemer selected Kennedy to serve as special legal counsel and later appointed him Secretary of the Cabinet. He left Roemer's staff in 1991 to run for state attorney general as a Democrat. In 1999, he was elected state treasurer; he was reelected in 2003, 2007, 2011, and 2015. Kennedy ran for U.S. Senate in 2004 and 2008. In August 2007, he became a Republican. In 2016, when U.S. senator David Vitter opted not to seek reelection, Kennedy ran for Senate again. He finished first in the November nonpartisan blanket primary and defeated State Public Service Commissioner Foster Campbell in the December runoff. He was sworn in on January 3, 2017. Kennedy was one of six Republican senators to object to the certification of Arizona's electors in the 2020 presidential election. In 2022, he was reelected to the Senate. Kennedy is set to be Louisiana's senior senator when Bill Cassidy leaves office in 2027.
Mark Twain was a prominent contemporaneous critic of Eddy's. His first article about Christian Science was published in Cosmopolitan in October 1899. Another three appeared in 1902–1903 in North American Review, then a book, Christian Science (1907). He also wrote a satirical story, "The Secret History of Eddypus, the World Empire" (1901–1902), in which Christian Science replaces Christianity and Eddy becomes the Pope. Twain described Eddy as "[g]rasping, sordid, penurious, famishing for everything she sees—money, power, glory—vain, untruthful, jealous, despotic, arrogant, insolent, pitiless where thinkers and hypnotists are concerned, illiterate, shallow, incapable of reasoning outside of commercial lines, immeasurably selfish." Science and Health he called "strange and frantic and incomprehensible and uninterpretable," and argued that Eddy had not written it herself. "There is nothing in Christian Science that is not explicable," he wrote, "for God is one, Time is one, Individuality is one, and may be one of a series, one of many, as an individual man, individual horse; whereas God is one, not one of a series, but one alone and without an equal." Eddy apart, Twain felt ambivalent toward mind-cure, arguing that "the thing back of it is wholly gracious and beautiful." His daughter Clara Clemens became a Christian Scientist and wrote a book about it, Awake to a Perfect Day (1956). Albert Bigelow Paine, Twain's biographer, quotes Twain as satirically saying this about Mary Bakery Eddy: "Christian Science is humanity’s boon.
There are problems with neuroregeneration due to many sources, both internal and external. There is a weak regenerative ability of nerves and new nerve cells cannot simply be made. The outside environment can also play a role in nerve regeneration. Neural stem cells (NSCs), however, are able to differentiate into many different types of nerve cells. This is one way that nerves can "repair" themselves. NSC transplant into damaged areas usually leads to the cells differentiating into astrocytes which assists the surrounding neurons. Schwann cells have the ability to regenerate, but the capacity that these cells can repair nerve cells declines as time goes on as well as distance the Schwann cells are from site of damage.
Sources: en.wikipedia.org
Its legal status depends on the country and intended use. It is not an approved medicine in major jurisdictions. In sport, it is prohibited by anti-doping rules.
Laboratories typically use LC-MS/MS to detect SR9009 and related compounds in urine or blood. The method is sensitive but depends on sample collection timing. Confirmatory analysis follows quality-control procedures.
Solid material is generally kept cold, dry, and protected from light. Solutions are often stored in sealed containers at low temperature. Stability beyond recommended periods is not well documented.
No. It is an investigational compound without approved therapeutic indications. It is sold for research purposes only in many jurisdictions.