A practical reference on metabolic modulator: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
Reviewed 2025-12-28. Anything still debated is marked as such rather than presented as settled.
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.
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.
| 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 |
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.
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.
== Indications/Symptoms == Typical symptoms after being bitten by a black mamba include the rapid onset of dizziness, drowsiness and coughing and having difficulties breathing. Other likely symptoms include convulsions, neuromuscular symptoms, shock, loss of consciousness, hypotension, ataxia, excessive salivation, limb paralysis, nausea and vomiting, fever, and severe abdominal pain. Permanent limb paralysis is very likely if the bite remains untreated. In the most severe case, if untreated, the bite of the black mamba can lead to death by suffocation, resulting from the paralysis of respiratory muscles. All these symptoms are due to a combination of all the toxic peptides the crude venom of the black mamba contains. The symptoms are related to calciseptine because it also works as a smooth muscle relaxant, thus explaining the early onset of having difficulties breathing, limb paralysis and even death by suffocation. Calciseptine is known to have a hypotensive effect. It cannot clearly be established which peptide is most responsible for which symptom, since combinations of different toxins can have various effects.
=== Texas === On June 22, 2025, Texas Governor Greg Abbott signed the Texas Responsible Artificial Intelligence Governance Act (TRAIGA) into law. The legislation took effect on January 1, 2026. The act applies to developers and deployers of artificial intelligence systems used by Texas residents and prohibits the development and deployment of AI systems intended to incite violence, self-harm, unlawful discrimination, and other illegal activities. The law also restricts Texas state government entities from using AI systems for social scoring of consumers or for identifying individuals using biometric data without their consent. In addition, TRAIGA established the Texas Artificial Intelligence Council, which is tasked with providing recommendations on the use of AI systems by state agencies, and a regulatory sandbox program. Texas Senate Bill 20 (S.B. 20), also known as the "Stopping AI-Generated Child Pornography Act", was signed into law on June 20, 2025.
Pardaxin is a peptide produced by the Red Sea sole (P4, P5) and the Pacific Peacock sole (P1, P2, P3) that is used as a shark repellent. It causes lysis of mammalian and bacterial cells, similar to melittin.
=== Discontinued === Alprazolam inhalation (AZ-002; FNP-002; Staccato® alprazolam; STAP-001; UCB-7538) – GABAA receptor positive allosteric modulator and benzodiazepine [7] Alprazolam intranasal (Panistat) – GABAA receptor positive allosteric modulator and benzodiazepine [8] BTG-1640 (ABIO-08/01; ABIO-0801) – undefined mechanism of action [9] Eglumetad (Eglumegad; LY-354740) – metabotropic glutamate mGlu2 and mGlu3 receptor agonist [10] JNJ-19567470 (CRA-5626; R-317573) – corticotropin releasing factor receptor 1 (CRF1R) antagonist [11] Nefazodone (BMY-13754; Dutonin; MJ-13754; MS-13754; Nefadar; Serzone) – serotonin 5-HT1A receptor ligand, serotonin 5-HT2A and 5-HT2C receptor antagonist, α1- and α2-adrenergic receptor antagonist, weak serotonin–norepinephrine–dopamine reuptake inhibitor (SNDRI), and other actions [12] Xenon (NBTX-001) – ionotropic glutamate NMDA receptor antagonist [13]
Sources: en.wikipedia.org
=== CT and MRI scans === Imaging of the pituitary gland is important in confirming hypersomatotropism in cats where it is suspected. Showing a pituitary mass is important to establish a final diagnosis alongside clinical findings and hormonal findings. Knowing the size of the pituitary mass is also necessary to decide the best course of treatment. In the vast majority of cats with hypersomatropism, it is caused by an adenoma of the somatotrophic cells. Said adenoma is typically visible by the time a cat presents with symptoms; however, if pituitary imaging is performed during the early stages of the disease, it may still be small and difficult to recognise. Rarely CT/MRI imaging may not reveal anything, this may either due to a small size of the tumour or due to a different aetiology for the acromegaly. Rarely in humans with acromegaly, somatotrophic hyperplasia as the result of growth hormone releasing hormones, caused by a tumour. This aetiology has not been observed in cats; however, a cat with normal CT and MRI imaging, the histopathology showed—instead of adenoma—acidophilic proliferation.
Myomeres are overlapping "cones" of muscle fibers bound by connective tissue. The shape of myomeres varies by species. Myomeres are commonly zig-zaged, being stacks or lines of muscle fibers shaped like "V" (lancelets), "W" (fishes), or straight (tetrapods). Generally, cyclostome myomeres are arranged in vertical strips while those of jawed fishes are folded in a complex manner due to their derived nature and evolution of advanced swimming capability. Specifically, myomeres of elasmobranchs and eels are W-shaped, while the myomeres of tetrapods, such as mudpuppies, run vertically and do not display complex folding. Myomeres overlap each other in succession, meaning myomere activation also allows neighboring myomeres to activate. They are innervated by spinal nerves, which pass into each myomere. Myomeres are made up of myoglobin-rich dark muscle as well as white muscle. Dark muscles generally function as slow-twitch muscle fibers while white muscle is composed of fast-twitch fibers. In gnathostomes, the myomeres are separated by myoseptal tendons. Specifically, these are the myorhabdoid tendons, the lateral tendons, the epineural tendon, and the epipleural tendon.
Kidney dialysis is the process of removing excess water, solutes, and toxins from the blood in people whose kidneys can no longer perform these functions naturally. Along with kidney transplantation, it is a type of renal replacement therapy. Dialysis may need to be initiated when there is a sudden rapid loss of kidney function, known as acute kidney injury (previously called acute renal failure), or when a gradual decline in kidney function, chronic kidney failure, reaches stage 5. Stage 5 chronic renal failure is reached when the glomerular filtration rate is less than 15% of the normal, creatinine clearance is less than 10 mL per minute, and uremia is present. Dialysis is used as a temporary measure in cases of acute kidney injury or for those awaiting kidney transplant and as a permanent measure in those for whom a transplant is not indicated or not possible. In West European countries, Australia, Canada, the United Kingdom, and the United States, dialysis is paid for by the government for those who are eligible. The first successful dialysis was performed in 1943.
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.
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.