REV-ERB agonist raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
This page was last updated on 2026-07-07 and is reviewed periodically as new material appears.
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.
Because REV-ERB receptors are core clock components, SR9009 has been examined for effects on daily rhythms as well as metabolism. Research has explored whether the compound can shift or reinforce circadian gene expression in tissues such as liver and muscle. Some studies report improved metabolic markers in obese or diabetic mice, while others show context-dependent responses. Questions remain about which effects are direct, which are secondary to timing, and how they might differ across species.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C20H24ClN3O4S | Reported for the free base |
| Molecular weight | 437.9 g/mol | Calculated from the formula |
| Primary target | REV-ERBα and REV-ERBβ | Nuclear receptors involved in circadian regulation |
| Solubility | Soluble in DMSO and ethanol | Poorly soluble in water |
| Typical storage | -20 °C, desiccated | Protect from light and moisture |
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.
== Hemoglobin functions == Hemoglobin is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Hemoglobin in the blood carries oxygen from the lungs to the other tissues of the body, where it releases the oxygen to enable aerobic respiration which powers the metabolism. Normal levels of hemoglobin vary according to sex and age in the range 9.5 to 17.2 grams of hemoglobin in every deciliter of blood. Hemoglobin also transports other gases. It carries off some of the body's respiratory carbon dioxide (about 20–25% of the total) as carbaminohemoglobin, in which CO2 binds to the heme protein. The molecule also carries the important regulatory molecule nitric oxide bound to a thiol group in the globin protein, releasing it at the same time as oxygen.
== External links == An Extremely Detailed Map of the 2024 Election from The New York Times "Misinformation Dashboard: Election 2024. A tool tracking the topics and tactics of 2024 election misinformation". News Literacy Project. 2024. Retrieved September 30, 2024. Dovere, Edward-Isaac (November 6, 2024). "Where Harris' campaign went wrong". CNN. Retrieved November 7, 2024. "The Choice 2024: Harris vs. Trump". Frontline. Season 43. Episode 2. September 24, 2024. PBS. WGBH. Retrieved November 28, 2024. "The VP Choice: Vance vs. Walz". Frontline. Season 43. Episode 3. October 8, 2024. PBS. WGBH. Retrieved November 28, 2024.
The March of the Chinese People's Liberation Army was adopted as the military anthem by the Central Military Commission on 25 July 1988. The lyrics of the anthem were written by composer Gong Mu (real name: Zhang Yongnian; Chinese: 张永年) and the music was composed by Korea-born Chinese composer Zheng Lücheng.
Goenrich M, Bartoschek S, Hagemeier CH, Griesinger C, Vorholt JA (February 2002). "A glutathione-dependent formaldehyde-activating enzyme (Gfa) from Paracoccus denitrificans detected and purified via two-dimensional proton exchange NMR spectroscopy". The Journal of Biological Chemistry. 277 (5): 3069–72. doi:10.1074/jbc.C100579200. hdl:11858/00-001M-0000-0012-F447-8. PMID 11741920.
Fractional killing, (the incomplete growth inhibition of tumor cells) as mentioned as a result of tumor heterogeneity, is likely exacerbated by the fluctuations in the proteome and wide distribution of varying responsiveness in each cell, further combating the efforts of chemotherapy drugs.
Sources: en.wikipedia.org
== Sequence == The Kozak sequence was determined by sequencing of 699 vertebrate mRNAs and verified by site-directed mutagenesis. While initially limited to a subset of vertebrates (i.e. human, cow, cat, dog, chicken, guinea pig, hamster, mouse, pig, rabbit, sheep, and Xenopus), subsequent studies confirmed its conservation in higher eukaryotes generally. The sequence was defined as 5'-(gcc)gccRccAUGG-3' (IUPAC nucleobase notation summarized here) where:
Clorazepate, sold under the brand name Tranxene among others, is a benzodiazepine medication. It possesses anxiolytic, anticonvulsant, sedative, hypnotic, and skeletal muscle relaxant properties. Clorazepate is an unusually long-lasting benzodiazepine and serves as a prodrug for the equally long-lasting desmethyldiazepam, which is rapidly produced as an active metabolite. Desmethyldiazepam is responsible for most of the therapeutic effects of clorazepate. It was patented in 1965 and approved for medical use in 1967.
=== Blocked catheters === Alteplase can be used in small doses to clear blood clots that obstruct a catheter, reopening the catheter so it can continue to be used. Catheter obstruction is commonly observed with a central venous catheter. Currently, the standard treatment for catheter obstructions in the United States is alteplase administration. Alteplase is effective and low risk for treating blocked catheters in adults and children. Overall, adverse effects of alteplase for clearing blood clots are rare. Novel alternatives to treat catheter occlusion, such as tenecteplase, reteplase, and recombinant urokinase, offer the advantage of shorter dwell times than alteplase.
=== Overview === The titular library is split up into ten unlockable floors for fighting against enemies, or "guests", in battles known as "receptions". Before the start of each reception, players enter the preparation phase where they can change equipment and inspect opponents' stats, including HP, Stagger Resist (SR), resistance values, and equipment. A reception may span over multiple acts; players upon clearing an act will return to the preparation phase for the next act. Librarians' equipment cannot be changed in-between acts; they lose status effects that retain from the last act, but will keep their HP and Emotion level, and their Stagger Resist is recovered to full. Library of Ruina's story is primarily shown in a visual novel format. Cutscenes about guests and miscellaneous discussions are shown once a reception starts and ends, typically delivered through conversations between two library residents, Angela and Roland.
==== Central nervous system ==== The central nervous system (CNS) consists of a bilobed brain (cerebral ganglia, or supra-pharyngeal ganglion), sub-pharyngeal ganglia, circum-pharyngeal connectives and a ventral nerve cord. Earthworms' brains consist of a pair of pear-shaped cerebral ganglia. These are located in the dorsal side of the alimentary canal in the third segment, in a groove between the buccal cavity and pharynx. A pair of circum-pharyngeal connectives from the brain encircle the pharynx and then connect with a pair of sub-pharyngeal ganglia located below the pharynx in the fourth segment. This arrangement means the brain, sub-pharyngeal ganglia and the circum-pharyngeal connectives form a nerve ring around the pharynx. The ventral nerve cord (formed by nerve cells and nerve fibers) begins at the sub-pharyngeal ganglia and extends below the alimentary canal to the most posterior body segment. The ventral nerve cord has a swelling, or ganglion, in each segment, i.e. a segmental ganglion, which occurs from the fifth to the last segment of the body. There are also three giant axons, one medial giant axon (MGA) and two lateral giant axons (LGAs) on the mid-dorsal side of the ventral nerve cord. The MGA is 0.07 mm in diameter and transmits in an anterior-posterior direction at a rate of 32.2 m/s. The LGAs are slightly narrower at 0.05 mm in diameter and transmit in a posterior-anterior direction at 12.6 m/s. The two LGAs are connected at regular intervals along the body and are therefore considered one giant axon.
Sources: en.wikipedia.org
It is a synthetic REV-ERB agonist used mainly in preclinical research. It is not an approved medicine for human use.
It binds to REV-ERBα and REV-ERBβ, nuclear receptors involved in circadian and metabolic gene regulation. This can alter transcription of genes related to lipid and glucose metabolism in experimental models.
No controlled human trials have established that effect. Endurance findings come primarily from rodent studies, and human responses remain unknown.
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.