Everything below concerns REV-ERB agonist. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-04-01. Where a claim depends on a specific study, the study is described rather than over-claimed.
SR9009 is a synthetic small molecule studied as an agonist of REV-ERB nuclear receptors. REV-ERB alpha and REV-ERB beta help regulate circadian rhythms and metabolic gene expression. In laboratory research, SR9009 has been used to probe how these receptors affect skeletal muscle, liver, and adipose tissue. The compound was identified in academic drug-discovery work and is often described in scientific literature by its chemical name and research code. It is not an approved medicine, and human clinical data remain limited or absent.
SR9009 binds REV-ERB receptors and alters their repressive activity on target genes. This action can change transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. In rodent studies, treated animals have shown changes in muscle oxidative capacity and exercise performance, though effects vary by dose, duration, and model. The precise molecular steps connecting receptor binding to whole-body outcomes are still an active area of investigation. Findings in animals do not automatically translate to humans.
Research interest in SR9009 grew from studies showing improved running endurance in mice after short treatment periods. Those experiments linked the compound to increased mitochondrial content and fatty acid oxidation in muscle, but the findings come from animal models and specific dosing schedules. Independent replication has been limited, and the pathways connecting REV-ERB activation to exercise performance are still being mapped. Whether similar responses occur in humans is an open question.
SR9009 is often grouped with compounds studied for circadian and metabolic regulation rather than with classical anabolic steroids. Its interactions with nuclear receptors differ from those of androgen receptor ligands, and its proposed mechanisms involve transcriptional control rather than direct hormone signaling. Some sources classify it as a metabolic modulator because of observed effects on energy utilization. The distinction matters for regulation and for interpreting research results across different compound classes.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic REV-ERB agonist | Small-molecule nuclear receptor ligand |
| Appearance | Off-white to pale yellow solid | Typical for research-grade powder |
| Solubility class | Soluble in DMSO; low water solubility | Common stock solutions use organic solvent |
| Typical stock solvent | Dimethyl sulfoxide | Used for laboratory assays |
| Common analytical method | HPLC with UV or mass detection | Used for identity and purity checks |
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.
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.
== Injectable materials == Many different materials have been used as perianal injectable bulking agents. The ideal injectable or implantable material would be biocompatible, non-migratory, non-allergenic, non-carcinogenic and non-immunogenic (and therefore induce a minimal inflammatory and fibrotic reaction). The material should also be easy to inject. The particles should be greater than 80 μm in diameter in order to prevent migration away from the injection site. On the other hand, materials with particles small enough to be used in small caliber needles may be desirable, in order to leave a smaller needle track, which may reduce the chance of leakage of the material via the needle track. Alternatively, some materials are shape-retaining porous hydrogels with no particles. The ideal material should produce an improvement in continence not only in the short term, but in the long term, and repeated procedures should not be necessary. Technically, most materials are particles suspended in a carrier (excipient) solution, which is usually a biodegradable gel. It is not known which of the available materials is the best.
==== Miscellaneous ==== Buspirone is not effective as a treatment for benzodiazepine withdrawal, barbiturate withdrawal, or alcohol withdrawal. SSRI and SNRI antidepressants such as paroxetine and venlafaxine, respectively, may cause jaw pain/jaw spasm reversible syndrome, although it is not common, and buspirone appears to be successful in treating antidepressant-induced bruxism.
== Discography == Studio albums (A Lament for...) The Addicts (2007) Leaving Paris (2010) Hope /// Dope /// Rope (2012) This Is Not Supposed To Be Positive (2015) Banlieue Triste (2018) A Loner (2022) Saddiction (2025) EPs Bus de Nuit (2019) Split albums Hangman's Chair / Eibon (2007) Hangman's Chair / Drawers (2012) Hangman's Chair / Acid Deathtrip (2014) Hangman's Chair / Greenmachine (2017)
The development of generative AI has raised concerns from governments, businesses, and individuals, resulting in protests, legal actions, calls to pause AI experiments, and actions by multiple governments. In a July 2023 briefing of the United Nations Security Council, Secretary-General António Guterres stated "Generative AI has enormous potential for good and evil at scale", that AI may "turbocharge global development" and contribute between $10 and $15 trillion to the global economy by 2030, but that its malicious use "could cause horrific levels of death and destruction, widespread trauma, and deep psychological damage on an unimaginable scale". In addition, generative AI has a significant carbon footprint.
Sources: en.wikipedia.org
== Design and manufacture == The design and manufacture of PMPs involves biomaterial selection, nanoparticle engineering, surface functionalization, and scalable production techniques to mimic the structure, function, and biomechanical properties of native platelets. One such design is a nanohair decorated microsphere made by a research group. These are small particles created from a combination of polystyrene, polyaniline (PANi), and epithelial cell adhesion molecule (EpCAM) antibodies that bind to circulating tumor cells. These spheres are designed to have a 1μm diameter created with the polystyrene molecules where the inner layer is hydrophilic to surround the core. The PANi is used to create nanohairs that simulate the natural aggregation of platelets. These nanohairs are attached to the surface of the polystyrene nanoparticles and range in length from 100 to 800 nm. The EpCAM antibodies are also attached to the nanospheres and are capable of binding to the EpCAM of circulating tumor cells in order to capture and remove them from circulation.
Police Reservists and regular police officers organised in a similar way were called the Police Anti Terrorist Unit or PATU. Police of all ranks to chief inspector, were obliged to perform PATU secondment on a regular rotation basis, and deployed to operational areas. Riot standby units were also maintained to deal with urban civil disorder on the same basis. Counter insurgency and advanced weapons training were mandatory by the 1970s in anticipation of PATU and district duties. The BSAP also oversaw the intelligence collection function of the Selous Scouts. That function was performed by an embedded element of the BSAP's Special Branch (SB), commanded by Chief Superintendent Michael "Mac" McGuinness; the SB liaison team conducted interrogations of captured guerrillas, reviewed captured documents, and collated and disseminated intelligence. The SB team also oversaw the production and insertion of poisoned clothing, food, beverages, and medicines into the guerrilla supply chain. The use of contaminated supplies resulted in the reported deaths of over 800 guerrillas, and the likely death toll probably reached well over 1,000.
They finally arrived at Funchal on 19 November. Their children were being looked after at Wartegg Castle in Switzerland by Charles's step-grandmother Maria Theresa, although Zita managed to see them in Zürich when her son Robert needed an operation for appendicitis. The children joined their parents in Madeira in February 1922.
== Definition == Vitamin A is a fat-soluble vitamin, a category that also includes vitamins D, E and K. The vitamin encompasses several chemically related naturally occurring compounds or metabolites, i.e., vitamers, that all contain a β-ionone ring. The primary dietary form is retinol, which may have a fatty acid molecule attached, creating a retinyl ester, when stored in the liver. Retinol – the transport and storage form of vitamin A – is interconvertible with retinal, catalyzed to retinal by retinol dehydrogenases and back to retinol by retinaldehyde reductases.
== In transplant rejection == In a transplant procedure, as of an organ or stem cells, MHC molecules themselves act as antigens and can provoke immune response in the recipient, thus causing transplant rejection. MHC molecules were identified and named after their role in transplant rejection between mice of different strains, though it took over 20 years to clarify MHC's role in presenting peptide antigens to cytotoxic T lymphocytes (CTLs). Each human cell expresses six MHC class I alleles (one HLA-A, -B, and -C allele from each parent) and six to eight MHC class II alleles (one HLA-DP and -DQ, and one or two HLA-DR from each parent, and combinations of these). The MHC variation in the human population is high, at least 350 alleles for HLA-A genes, 620 alleles for HLA-B, 400 alleles for DR, and 90 alleles for DQ. Any two individuals who are not identical twins, triplets, or higher order multiple births, will express differing MHC molecules. All MHC molecules can mediate transplant rejection, but HLA-C and HLA-DP, showing low polymorphism, seem least important. When maturing in the thymus, T lymphocytes are selected for their TCR incapacity to recognize self antigens, yet T lymphocytes can react against the donor MHC's peptide-binding groove, the variable region of MHC holding the presented antigen's epitope for recognition by TCR, the matching paratope. T lymphocytes of the recipient take the incompatible peptide-binding groove as nonself antigen. There are various types of transplant rejection that are known to be mediated by MHC (HLA):
Sources: en.wikipedia.org
SR9009 is a synthetic research compound that acts on REV-ERB nuclear receptors. It is not approved for human use and is sold only as a research chemical. Its effects have been studied mainly in cells and rodents.
It binds REV-ERB alpha and REV-ERB beta and changes the expression of genes tied to metabolism and circadian rhythm. These changes can affect mitochondria and energy use in animal models. The exact chain from receptor binding to physiological outcome is still being mapped.
No reliable human trials show that SR9009 improves athletic performance. Some rodent studies report endurance changes, but these results are not proof of human benefit. Its use in sport is prohibited, and quality and safety data are lacking.
It is a synthetic REV-ERB agonist used mainly in preclinical research. It is not an approved medicine for human use.