The short version of nuclear receptor fits in a sentence. The long version — which is the one that helps — is below.
Reviewed 2025-08-21. Anything still debated is marked as such rather than presented as settled.
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.
SR9009 is a synthetic small molecule that acts on the nuclear receptors REV-ERBα and REV-ERBβ. These receptors are part of the circadian clock machinery and normally repress transcription of certain target genes. In laboratory research, SR9009 is used as a chemical tool to study how REV-ERB activity influences metabolism, inflammation, and daily biological rhythms. The compound is not an approved medicine, and its effects in humans remain largely uncharacterized. It is often described as an investigational agent rather than a therapeutic product.
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.
| Property | Value | Notes |
|---|---|---|
| Common name | SR9009 | Also marketed informally as Stenabolic |
| Chemical class | Synthetic REV-ERB agonist | Binds REV-ERBα and REV-ERBβ |
| Molecular formula | C24H30ClN3O4S | Approximate molecular weight 492 g/mol |
| CAS Registry Number | 1379686-30-2 | Identifier for the parent compound |
| Regulatory status | Not approved for human use | Prohibited in sport by WADA |
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.
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.
== Production and effects == Artificial production methods of radionuclides include neutron sources such as nuclear reactors, as well as particle accelerators such as cyclotrons. The radiation from radionuclides generally has a harmful effect on organisms including humans, although low levels of exposure occur naturally. The degree of harm depends on the nature and extent of the radiation (alpha, beta, gamma, or neutron), the amount and nature of exposure (close contact, inhalation or ingestion), and the element's biochemical properties (toxicity). Increased risk of cancer is unavoidable, and worse cases induce cancer, chronic radiation syndrome or acute radiation syndrome. Radionuclides can be used as weapons by the fallout effects of nuclear weapons and by radiological weapons. Radionuclides are used in nuclear medicine for both diagnosis and treatment. The term “theranostics” (or “theragnostics”) refers to the combination of diagnosis and therapy of a disease within a single medical procedure or technique. An imaging tracer made with radionuclides is a radioactive tracer. Radionuclide therapy is a form of radiotherapy. A pharmaceutical drug made with radionuclides is called a radiopharmaceutical.
=== Incel slang === Clavicular is primarily recognized for introducing language and slang from the incelosphere and manosphere to mainstream society. Peters transformed quickly from an "obscure online presence" into one of the internet's "most inescapable figures" by transforming "chaos into content" and running it through his various "clip accounts". Miami New Times says, "His traditionally handsome face and natural charisma, punctuated by increasingly bizarre moments that feel distinctly internet-era, have turned him into one of livestreaming's most compulsively watchable figures." NBC's Saturday Night Live mocks him, CBS's 60 Minutes interviews him (as does Sean Hannity). The New York Times profiled him and the Hulu looksmaxxing documentary "IMPACT x Nightline: Looksmaxxed" focuses on him. Lingo Peters popularizes has "seeped into the public consciousness" with slang words like "mogging" and the suffix "maxxing" gaining widespread use.
=== Sources === JYB = Jewish Year Book Bell, John; Millar, Victoria (19 May 2011). "Eleanor Farjeon". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/33079. Brown, Andrew (2005). J D Bernal—The Sage of Science. Oxford: Oxford University Press. ISBN 0-19-851544-8. Grove, Jack (27 March 2013). "Tribunal slams academic for bringing anti-Semitism case". Times Higher Education. Retrieved 16 March 2020. Johns, Francis A (1983). "Manifestations of Arthur Waley: Some Bibliographical and Other Notes" (PDF). The British Library Journal. 9 (2): 171–184.
== Method == The RAST is a radioimmunoassay test to detect specific IgE antibodies to suspected or known allergens for the purpose of guiding a diagnosis about allergy. IgE is the antibody associated with Type I allergic response: for example, if a person exhibits a high level of IgE directed against pollen, the test may indicate the person is allergic to pollen (or pollen-like) proteins. A person who has outgrown an allergy may still have a positive IgE years after exposure. The suspected allergen is bound to an insoluble material and the patient's serum is added. If the serum contains antibodies to the allergen, those antibodies will bind to the allergen. Radiolabeled anti-human IgE antibody is added where it binds to those IgE antibodies already bound to the insoluble material. The unbound anti-human IgE antibodies are washed away. The amount of radioactivity is proportional to the serum IgE for the allergen. RASTs are often used to test for allergies when:
Sources: en.wikipedia.org
The premise of CAR-T immunotherapy is to modify T cells to recognize cancer cells in order to target and destroy them. Scientists harvest T cells from people, genetically alter them to add a chimeric antigen receptor (CAR) that specifically recognizes cancer cells, then infuse the resulting CAR-T cells into patients to attack their tumors. Tisagenlecleucel (Kymriah), a chimeric antigen receptor (CAR-T) therapy, was approved by the FDA in 2017 to treat acute lymphoblastic leukemia (ALL). This treatment removes CD19 positive cells (B-cells) from the body (including the diseased cells, but also normal antibody-producing cells). Axicabtagene ciloleucel (Yescarta) is another CAR-T therapeutic, approved in 2017 for treatment of diffuse large B-cell lymphoma (DLBCL).
The main difference between Minds and other extremely powerful artificial intelligences in fiction is that they are highly humanistic and benevolent. They are so both by design, and by their shared culture. They are often even rather eccentric. Yet, by and large, they show no wish to supplant or dominate their erstwhile creators. On the other hand, it can also be argued that to the Minds, the human-like members of the Culture amount to little more than pets, whose wants are followed on a Mind's whim. Within the Series, this dynamic is played on more than once. In 'Excession', it is also played on to put a Mind in its place – in the mythology, a Mind is not thought to be a god, still, but an artificial intelligence capable of surprise, and even fear.
==== Methods of biomedical waste incineration ==== The three type of medical waste incinerators are controlled air, excess air, and rotary kiln. Controlled air is also known as starved-air incineration, two-stage incineration, or modular combustion. This is the process of which waste is fed to a combustion chamber and combustion air begins to dry and facilitates volatilization of the waste. As a result, carbon dioxide and other excess gases are released into the atmosphere. The second type of incineration is the excess air process. This is similar to the controlled air process, such as the waste being dried, ignited, and combusted by heat provided by the primary chamber burner. However, the main difference is that moisture and volatile components in the waste are vaporized. In a rotary kiln, the process is similar to the two mention above, however, it is more versatile in terms of being able to mix wet and dry waste components and viewed by many waste engineers as being the most environmentally friendly.
Sources: en.wikipedia.org
The only people allowed in the forests are firefighters and people who own property in the forests. 2021 Atlantic hurricane season – Thirteen people are killed in Alabama during Tropical Storm Claudette. Ten of the victims die in a single car crash, nine of whom are children. An EF3 tornado strikes the Illinois cities of Naperville, Woodridge, and Darien, destroying 12 homes, damaging an additional 100, and injuring six people. June 21 Las Vegas Raiders defensive end Carl Nassib becomes the first National Football League player to come out as openly gay. Minnesota Vikings defensive tackle Jaylen Twyman is shot along with three others while visiting his aunt in Washington, D.C. June 22 2021 New York City mayoral election – Residents of New York City elect a new mayor. This is the first time that a New York City election is determined using rank-choice (instant-runoff) voting. 2021 Buffalo mayoral election – Community activist and self-avowed socialist India Walton defeats incumbent mayor Byron Brown to win the Democratic primary. As the Democratic candidate is overwhelmingly favored to win the mayoralship in November, this will possibly be the first time that a socialist will be mayor of a major American city since 1960. COVID-19 pandemic: Michigan lifts its face mask requirements and capacity restrictions on indoor events. Masks are still required for nursing homes, prisons, hospitals, schools, funeral directors, and agricultural workers. Usage at businesses is optional.
=== Research === Similar assays can be performed for research purposes, detecting concentrations of potential clinical candidates like anti-fungal and asthma drugs. This technique is obviously useful in observing multiple species in collected samples, as well, but requires the use of standard solutions when information about species identity is sought out. It is used as a method to confirm results of synthesis reactions, as purity is essential in this type of research. However, mass spectrometry is still the more reliable way to identify species.
PIHCA, due to this slight advantage, is currently undergoing phase III clinical trials for transporting the drug doxorubicin as a treatment for hepatocellular carcinomas. Coating these polymeric nanoparticle devices with different surfactants can also aid BBB crossing and uptake in the brain. Surfactants such as polysorbate 80, 20, 40, 60, and poloxamer 188, demonstrated positive drug delivery through the blood–brain barrier, whereas other surfactants did not yield the same results. It has also been shown that functionalizing the surface of nanoparticles with polyethylene glycol (PEG), can induce the "stealth effect", allowing the drug-loaded nanoparticle to circulate throughout the body for prolonged periods of time. Further, the stealth effect, caused in part by the hydrophilic and flexible properties of the PEG chains, facilitates an increase in localizing the drug at target sites in tissues and organs.
Sources: en.wikipedia.org
SR9009 is a synthetic research compound that binds and modulates the nuclear receptors REV-ERBα and REV-ERBβ. It is used in laboratory studies of circadian biology and metabolism, not as an approved medicine. It is also known by the informal name Stenabolic.
No. SR9009 has not been approved as a therapeutic drug in the United States, European Union, or other major markets. Human safety and efficacy data are very limited. Its presence in consumer products does not imply regulatory approval.
The World Anti-Doping Agency lists SR9009 as a prohibited substance because it can alter gene expression and metabolic pathways relevant to performance. The ban applies at all times, not only during competition. Detection relies on laboratory methods such as mass spectrometry.
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.