REV-ERB agonist comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Updated 2026-01-10. Numbers and descriptions here follow the published literature rather than marketing material.
Quality control for research materials includes identity confirmation by nuclear magnetic resonance and purity assessment by high-performance liquid chromatography. Mass spectrometry provides molecular weight confirmation and can detect related impurities. Purchasers should request a certificate of analysis that lists lot-specific data. Online products advertised for human use often lack such documentation. Distinguishing legitimate research material from mislabeled or contaminated samples is a recurring challenge in independent testing, and independent laboratories may use orthogonal methods to verify identity.
Detection of SR9009 in biological samples usually relies on liquid chromatography coupled to tandem mass spectrometry. This approach separates the compound from matrix components and identifies it by mass transitions. Because SR9009 can undergo metabolism, laboratories often look for both parent drug and specific metabolites. Sample preparation may involve protein precipitation or solid-phase extraction. Method validation examines sensitivity, carryover, and interference from related substances, and reference standards are required for accurate calibration.
Storage recommendations for SR9009 reference material typically specify a freezer at -20 °C or lower, with protection from moisture and light. Repeated freeze-thaw cycles can degrade small molecules and introduce variability. Stock solutions in dimethyl sulfoxide are often aliquoted to avoid repeated handling. Stability studies may examine degradation under heat, humidity, and light exposure. The compound's thiophene and nitro groups can participate in reactions that alter analytical signals over time, so such changes affect quantitative results.
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.
| Property | Value | Notes |
|---|---|---|
| Typical storage temperature | -20 °C or lower | Desiccated and protected from light |
| Common analytical method | LC-MS/MS | Detects parent drug and metabolites |
| Solubility class | Lipophilic; soluble in organic solvents | Low aqueous solubility |
| Molecular weight | 437.94 g/mol | Calculated from reported formula |
| Synonyms | SR9009; REV-ERB agonist | Code name used in scientific literature |
Detection in biological samples can be complicated by rapid metabolism and low circulating concentrations. Some studies report phase I and phase II metabolites, and analytical methods may need to target those species in addition to the parent compound. Immunoassays are not broadly available, so mass spectrometry remains the main confirmatory approach. For anti-doping testing, laboratories look for SR9009 and its metabolites using validated LC-MS methods. Open questions include how long metabolites remain detectable and how different routes of administration alter detection windows.
In laboratory settings, SR9009 is typically characterized by liquid chromatography–mass spectrometry (LC-MS) or high-performance liquid chromatography with ultraviolet detection (HPLC-UV). These methods can confirm identity and estimate purity, but they require reference standards for accurate quantification. Because SR9009 is not a licensed pharmaceutical, no harmonized pharmacopeial monograph exists. Laboratories often validate in-house methods for matrices such as plasma, urine, or cell culture media. Sample preparation may involve protein precipitation or liquid-liquid extraction before analysis.
Physicochemical behavior influences handling. SR9009 is described as a solid with limited aqueous solubility, so organic solvents such as dimethyl sulfoxide or ethanol are common in research stock solutions. Aqueous dilution can produce precipitates if the organic content is too low. Light, heat, and repeated freeze-thaw cycles may affect stability. Storage recommendations usually specify a desiccated freezer environment protected from light, but exact stability data depend on the formulation and matrix.
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.
SR9009 is a synthetic small molecule developed as a REV-ERB agonist. It binds to REV-ERBα and REV-ERBβ, nuclear receptors that help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, the compound alters lipid and glucose handling and influences skeletal muscle oxidative capacity. Its exact effects in humans remain largely uncharacterized because controlled clinical trials have not been reported. The molecule is frequently described in preclinical literature as a metabolic modulator.
Among her appointments are James Cleverly, who becomes Shadow Housing Secretary. Welsh Conservative member of the Senedd Laura Anne Jones joins Reform UK. 19-year-old George Finch is formally appointed as leader of Warwickshire County Council, making the Reform UK councillor the UK's youngest permanent council leader. 23 July – The Scottish Greens are forced to issue a new list of candidates for the next Holyrood election after an error was found in counting the votes. 24 July – Jeremy Corbyn and Zarah Sultana officially launch their new political party, which has the provisional name Your Party. 25 July – 220 MPs sign a letter to the prime minister urging him to recognise Palestinian statehood. Former SNP MP Mhairi Black announces that she has left the party, citing its stance over transgender rights and Palestine as her main reasons for doing so. US President Donald Trump arrives at Prestwick Airport to begin a four-day private visit to the United Kingdom during which he will meet Prime Minister Keir Starmer and First Minister of Scotland John Swinney. 29 July – Starmer announces the UK will recognise a Palestinian state in September unless Israel takes "substantive steps to end the appalling situation in Gaza". Benjamin Netanyahu, Israel's prime minister, says in response that to do so "rewards Hamas's monstrous terrorism". Ghazi Hamad of Hamas welcomes the announcement as "one of the fruits of October 7". Trump completes his four-day visit to Scotland and returns to the United States.
Singapore consists of over 60 islands, including the main island, also known as Pulau Ujong. There are two man-made connections to Johor, Malaysia: the Johor–Singapore Causeway in the north and the Tuas Second Link in the west. Jurong Island, Pulau Tekong, Pulau Ubin and Sentosa Island are the largest of Singapore's smaller islands. The highest natural point is Bukit Timah Hill at 163.63 m (537 ft). Under British rule, Christmas Island, the Cocos (Keeling) Islands, and Labuan were administered from Singapore. Labuan was under this arrangement from 1907 until it was eventually merged into the Crown Colony of North Borneo in 1948. Shortly before Singapore achieved full internal self-governance in 1959, both Christmas Island and the Cocos (Keeling) Islands were transferred to Australia in 1958. Today, Pedra Branca at the South China Sea is the nation's easternmost point. Land reclamation projects have increased Singapore's land area from roughly 580 km2 (220 sq mi) in the 1960s to 770 km2 (300 sq mi) by the 2030s, an increase of over 30% or 190 km2 (73 sq mi). Some projects involve merging smaller islands to form larger and more functional landmasses, as was the case with Jurong Island. The type of sand used in reclamation works is found in rivers and beaches rather than deserts and remains in great demand worldwide. As such, neighbouring Southeast Asian countries have either restricted or barred sand exports to Singapore since the 2010s.
=== Glutamate transport === Citicoline lowers increased glutamate concentrations and raises decreased ATP concentrations induced by ischemia. Citicoline also increases glutamate uptake by increasing expression of EAAT2, a glutamate transporter, in vitro in rat astrocytes. It is suggested that the neuroprotective effects of citicoline after a stroke are due in part to citicoline's ability to decrease levels of glutamate in the brain. This is in part due to an indirect decrease in the extrasynaptic NMDA-TRMP4 death signaling pathway. It's important to also note it is only the extrasynaptic NMDA receptors responsible for excitotoxicity.
A story with Frazier Tharpe for GQ, published on June 2, 2025, started by stating that Clipse were unimpressed with the current state of mainstream hip-hop. The brothers gave Stove God Cooks and Future as exceptions. Pusha T lamented the feelings of loneliness and need to play "industry games" that came with his solo career, revealed that he was already becoming disillusioned with his former boss West during the 2019 recording sessions for Jesus Is King, and criticized West for his perceived character flaws. He also denied being a bad friend to West. The story of Clipse's dispute with Def Jam Recordings was told for the first time in this interview. Also included were comments about Drake suing Universal Music Group ("The suing thing is bigger than some rap shit. I just don't rate you.") and more details about the album: tracks "Mike Tyson", "POV", "F.I.C.O.", and features from Stove God Cooks and Lamar. After the release of "So Be It", GQ published a follow-up article (with unused excerpts from the interview) in which the song was discussed, including lyrics from Pusha T which diss Travis Scott. Another interview with Andre Gee for Rolling Stone was published on June 9. Clipse elaborated on their distribution deal with Roc Nation and announced a nationwide United States tour, planned to take place across twenty-five shows from August 3 to September 10.
Accumulation of amyloid proteins in the gastrointestinal system may be caused by a wide range of amyloid disorders and have different presentations depending on the degree of organ involvement. Potential symptoms include weight loss, diarrhea, abdominal pain, heartburn (gastrointestinal reflux), and GI bleeding. Amyloidosis may also affect accessory digestive organs including the liver, and may present with jaundice, fatty stool, anorexia, fluid buildup in the abdomen, and spleen enlargement. Accumulation of amyloid proteins in the liver can lead to elevations in serum aminotransferases and alkaline phosphatase, two biomarkers of liver injury, which is seen in about one third of people. Liver enlargement is common. In contrast, spleen enlargement is rare, occurring in 5% of people. Splenic dysfunction, leading to the presence of Howell-Jolly bodies on blood smear, occurs in 24% of people with amyloidosis. Malabsorption is seen in 8.5% of AL amyloidosis and 2.4% of AA amyloidosis. One suggested mechanism for the observed malabsorption is that amyloid deposits in the tips of intestinal villi (fingerlike projections that increase the intestinal area available for absorption of food), begin to erode the functionality of the villi, presenting a sprue-like picture.
Sources: en.wikipedia.org
=== Thorium-231 === 231Th has 141 neutrons. It is the decay product of uranium-235. It is found in very small amounts on the earth and has a half-life of 25.52 hours. When it decays, it emits a beta ray and forms protactinium-231, with a decay energy of 0.39 MeV.
Eating (also known as feeding or consuming) is the ingestion of food for digestion. In biology, this is typically done to provide heterotrophic organisms with the essential nutrients and energy needed for metabolism and physical growth, since they are incapable of acquiring nutrition and energy intrinsically like autotrophs and therefore must ingest external organic matters in order to survive. Animals, in particular, have evolved different forms of eating — carnivores and scavengers eat flesh (meat) from other animals, herbivores and algivores eat plants and algae, omnivores consume a mixture of both plant and animal matters, and detritivores and coprophages eat detritus and feces. Animals and phagotrophs eat and digest food internally, as opposed to decomposers such as fungi and microbes, who secrete enzymes to digest organic matters externally before absorbing the nutrients and thus do not "eat" food. For humans, eating is more complex, but is typically an activity of daily living. Human eating is usually organized into routine sessions known as meals, where proper courses of cooked food are consumed, typically with a decent quantity of staples; and more time-flexible casual eatings known as snacks, where small quantities of typically non-staple food (often convenience food, sometimes raw foods such as fruits and nuts) are consumed more for the purpose of degustation than to satiate hunger. Formal sessions of eating, e.g.
Peptide:N-glycosidase F, commonly referred to as PNGase F, is an amidase of the peptide-N4-(N-acetyl-beta-glucosaminyl)asparagine amidase class. PNGase F works by cleaving between the innermost GlcNAc and asparagine residues of high mannose, hybrid, and complex oligosaccharides from N-linked glycoproteins and glycopeptides. This results in a deaminated protein or peptide and a free glycan. PNGase F has a molecular weight of 35,500 and consists of a polypeptide chain of 314 amino acids. The optimal pH for enzyme activity is 8.6. However, the activity is stable for a wide variety of conditions and reagents. PNGase F maintains 60% activity from pH 6.0 to pH 9.5. It is able to deglycosylate in the absence of denaturants, but needs extensive incubation and larger amounts of the enzyme to cleave native proteins. Other endoglycosidases, similar to PNGase F, include endoglycosidase F1, endoglycosidase F2, endoglycosidase F3, and endoglycosidase H. These endoglycosidases have more specificity in cleavage and are less sensitive to protein conformation than PNGase F. All of these endoglycosidases, including PNGase F, can be purified from an almond emulsion or flavobacterium meningosepticum.
The three substrates of this enzyme are D-erythrose 4-phosphate, oxidised nicotinamide adenine dinucleotide (NAD+), and water. Its products are 4-phospho-D-erythronic acid, reduced NADH, and a proton. This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is D-erythrose 4-phosphate:NAD+ oxidoreductase. Other names in common use include erythrose 4-phosphate dehydrogenase, E4PDH, GapB, Epd dehydrogenase, and E4P dehydrogenase. This enzyme participates in vitamin B6 metabolism (see DXP-dependent biosynthesis of pyridoxal phosphate).
David Christopher Hopkinson, lately Director of Housing, Great Grimsby Borough Council. For services to Housing and to Local Government. Christiana Valerie Horrocks, lately Grade 7, Department of Health. John Anthony Howley, , lately Deputy Assistant Commissioner, Metropolitan Police. For services to the Police. Brian Joseph Hunt, Senior Professional and Technology Superintending Grade, Ministry of Defence. Frank George Henry Hunt, Grade 7, Department of Trade and Industry. Edward Graham Hutchinson. For charitable services. Jane Iris Isbister, lately Chairman, Forth Valley Health Board. For services to Health Care. Professor Kenneth Henderson Jack, Emeritus Professor, University of Newcastle-upon-Tyne, and Honorary Professor, University of Wales, Swansea. For services to Science. David Richard Jenkins, Finance Director, Sony Manufacturing Company (UK). For services to Industry in Wales. Frederick Albert Jennings, Chairman, Midlands Regional Fisheries Advisory Committee. For services to Fisheries Policy. Terence Maxfield Jobling, lately Veterinary Officer, Ministry of Agriculture, Fisheries and Food. David Lawrence Johnston, Director General, National Inspection Council for Electrical Installation Contracting. For services to Electrical Safety. David Henry Marshall Jones, lately Grade 6, the Benefits Agency, Department of Social Security. Derek Jones, lately Head, Libraries and Art Services, Richmond upon Thames. For services to Librarianship. Linda Edwina Jones, Principal Scientific Officer, the Defence Evaluation and Research Agency, Ministry of Defence.
Sources: en.wikipedia.org
Liquid chromatography-tandem mass spectrometry is a common approach. It can detect the parent compound and its metabolites in biological matrices.
Research samples are typically kept frozen, desiccated, and protected from light. Stock solutions are often aliquoted to reduce freeze-thaw cycles.
High-performance liquid chromatography and nuclear magnetic resonance are standard for purity and identity. Mass spectrometry confirms molecular weight.
It is a synthetic research compound that activates REV-ERB nuclear receptors. It is not an approved drug or dietary supplement. Most information comes from cell and animal studies.