Everything below concerns NR1D1. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-01-26. Numbers and descriptions here follow the published literature rather than marketing material.
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.
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.
Scientific discussion of SR9009 often separates animal evidence from human anecdote. Rodent studies provide controlled data on endurance, metabolism, and gene expression, but they use specific strains, doses, and treatment durations. Human reports are mostly uncontrolled and cannot establish cause and effect. Open questions include oral bioavailability, tissue distribution, metabolic stability, and long-term effects. Review articles generally call for more rigorous pharmacokinetic and safety research before any clinical use could be considered.
Analytical methods for SR9009 typically rely on liquid chromatography coupled with tandem mass spectrometry. The technique can separate the parent compound from related substances and detect low concentrations in biological matrices. Urine and blood are common samples in anti-doping testing, while in vitro studies may use cell culture media. Rapid metabolism and low expected concentrations make method validation important for reliable identification. Exact metabolite patterns can vary by species and are not fully mapped.
| 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 |
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.
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.
In rodent studies, SR9009 has been reported to increase mitochondrial content in skeletal muscle and improve exercise endurance under some conditions. These findings led to popular descriptions such as an exercise mimetic, although that term oversimplifies the biology. Effects vary by dose, timing, tissue, and model. The compound's influence on circadian pathways means that time of administration can matter in experiments. Whether similar metabolic changes occur in humans remains largely unexplored in controlled published trials.
The mechanism of action involves binding to REV-ERB receptors and recruiting corepressor complexes, which represses target gene transcription. This contrasts with many nuclear receptor agonists that activate transcription. Downstream effects may include changes in autophagy, mitochondrial biogenesis, and lipid handling, but the precise pathways remain an active area of study. Whether these molecular events translate into meaningful physiological effects in humans is unresolved. Most evidence comes from cultured cells and rodent models rather than human participants.
SR9009 is a synthetic small molecule developed as an agonist of the nuclear receptors REV-ERBα (NR1D1) and REV-ERBβ (NR1D2). These receptors help regulate circadian rhythms and metabolic gene expression. In cell and animal studies, SR9009 alters transcription of genes involved in lipid metabolism, inflammation, and mitochondrial function. It is not an approved medicine, and its pharmacological profile in humans remains largely uncharacterized. The compound is frequently discussed in the context of circadian biology and metabolic research rather than clinical use.
Preclinical reports have linked SR9009 to improved endurance and altered energy expenditure in rodents. Such findings have prompted interest in whether REV-ERB activation can influence skeletal muscle metabolism. However, the reported effects depend on dose, route, and experimental model, and replication across laboratories is limited. Human trials have not established comparable outcomes, so claims about exercise performance remain speculative. The absence of controlled human data is a central limitation in interpreting these observations.
Emapunil (AC-5216, XBD-173) is an anxiolytic drug which acts as a selective agonist at the peripheral benzodiazepine receptor, also known as the mitochondrial 18 kDa translocator protein or TSPO. This protein has multiple functions, among which is regulation of steroidogenesis, particularly the production of neuroactive steroids such as allopregnanolone in the brain. In both animal and human trials, emapunil produced fast acting anxiolytic and anti-panic effects, without producing sedation or withdrawal symptoms following cessation of use. Emapunil is also used in its 11C radiolabelled form to map the distribution of TSPO receptors in the brain.
=== Logistics === Logistics vaccination services assure necessary equipment, staff, and supply of licensed vaccines across international borders. Central logistics include vaccine handling and monitoring, cold chain management, and safety of distribution within the vaccination network. The purpose of the COVAX facility is to centralize and equitably administer logistics resources among participating countries, merging manufacturing, transport, and overall supply chain infrastructure. Included are logistics tools for vaccine forecasting and needs estimation, in-country vaccine management, potential for wastage, and stock management. Other logistics factors conducted internationally during distribution of a COVID‑19 vaccine may include:
=== Primary Sources === Banks, Iain M. (1987), Consider Phlebas, Orbit, ISBN 1-85723-138-4. Banks, Iain M. (1988), The Player of Games, Orbit, ISBN 1-85723-146-5. Banks, Iain M. (1990), Use of Weapons, Orbit, ISBN 9780356191607. Banks, Iain M. (1991). The State of the Art. Orbit. ISBN 0-356-19669-0.. Banks, Iain M. (10 August 1994). "A Few Notes on the Culture". Newsgroup: rec.arts.sf.written. Retrieved 3 August 2021.. Banks, Iain M. (1996), Excession, Orbit, ISBN 1-85723-457-X. Banks, Iain M. (1998), Inversions, Orbit, ISBN 1-85723-763-3. Banks, Iain M. (2000), Look to Windward, Orbit, ISBN 1-85723-969-5. Banks, Iain M. (2008), Matter, Orbit, ISBN 978-1-84149-417-3. Banks, Iain M. (2010), Surface Detail, Orbit, p. 400, ISBN 978-1-84149-893-5. Banks, Iain M. (2012), The Hydrogen Sonata, Orbit, ISBN 978-0356501505. Banks, Iain M. (n.d.), "A few Notes on Marain", Trevor Hopkins Homepage, retrieved 9 August 2021.
== Function == Periostin is a secreted extracellular matrix protein that was originally identified in cells from the mesenchymal lineage (osteoblasts, osteoblast-derived cells, the periodontal ligament, and periosteum). It has been associated with the epithelial-mesenchymal transition in cancer and with the differentiation of mesenchyme in the developing heart. This protein shares a homology with fasciclin I, a secreted cell adhesion molecule found in insects. In many cancers, periostin binds to integrins on cancer cells, activating the Akt/PKB- and FAK-mediated signaling pathways. This leads to increased cell survival, invasion, angiogenesis, metastasis, and the epithelial-mesenchymal transition. In humans and mice, periostin undergoes alternative splicing in its C-terminal region, resulting in specific isoforms that can be observed in a broad range of cancers such as pancreatic, colon, and breast cancer. While periostin plays a wide variety of roles in tissue development along with disease, its function in tissue remodeling as a response to injury is a common underlying role in these different mechanisms. Periostin is transiently upregulated during cell fate changes, whether they are related to alterations in physiology or to pathological changes. It influences extracellular matrix restructuring, tissue remodeling, and the epithelial-mesenchymal transition, all of which can be related to tissue healing, development, and disease. Thus, it functions as a mediator, balancing appropriate and inappropriate responses to tissue damage.
==== Flushing ==== Flushing – a short-term dilatation of skin arterioles, causing reddish skin color – usually lasts for about 15 to 30 minutes, although sometimes can persist for weeks. Typically, the face is affected, but the reaction can extend to neck and upper chest. The cause is blood vessel dilation due to elevation in prostaglandin GD2 (PGD2) and serotonin. Flushing was often thought to involve histamine, but histamine has been shown not to be involved in the reaction. Flushing is sometimes accompanied by a prickly or itching sensation, in particular, in areas covered by clothing. Prevention of flushing requires altering or blocking the prostaglandin-mediated pathway. Aspirin taken half an hour before the nicotinic acid prevents flushing, as does ibuprofen. Taking nicotinic acid with meals also helps reduce this side effect. Acquired tolerance will also help reduce flushing; after several weeks of a consistent dose, most people no longer experience flushing. Slow- or "sustained"-release forms of nicotinic acid have been developed to lessen these side effects. Nicotinamide and inositol nicotinate can be used as no-flush forms of vitamin B3, however the efficacy of the latter is dubious.
Sources: en.wikipedia.org
CO2SYS is a family of software programs that calculate chemical equilibria for aquatic inorganic carbon species and parameters. Their core function is to use any two of the four central inorganic carbon system parameters (pH, alkalinity, dissolved inorganic carbon, and partial pressure of carbon dioxide) to calculate various chemical properties of the system. These programs are widely used by oceanographers and limnologists to understand and predict chemical equilibria in natural waters.
Comprehensive two-dimensional gas chromatography, or GC×GC, is a multidimensional gas chromatography technique that was originally described in 1984 by J. Calvin Giddings and first successfully implemented in 1991 by John Phillips and his student Zaiyou Liu. GC×GC utilizes two different columns with two different stationary phases. In GC×GC, all of the effluent from the first dimension column is diverted to the second dimension column via a modulator. The modulator quickly traps, then "injects" the effluent from the first dimension column onto the second dimension. This process creates a retention plane of the 1st dimension separation x 2nd dimension separation. The oil and gas industry was an early adopter of the technology for the complex oil samples to determine the many different types of hydrocarbons and their isomers. In these types of samples, over 30000 different compounds could be identified in a crude oil with this comprehensive chromatography technology (CCT). The CCT evolved from a technology only used in academic R&D laboratories into a more robust technology used in many different industrial labs. Comprehensive chromatography is used in forensics, food and flavor, environmental, metabolomics, biomarkers and clinical applications. Some of the most well-established research groups in the world that are found in Australia, Italy, the Netherlands, Canada, United States, and Brazil use this analytical technique.
=== Legal basis in Austria === The legal basis for radiation protection in Austria is the Radiation Protection Act (BGBl. 277/69 as amended) of June 11, 1969. The tasks of radiation protection extend to the fields of medicine, commerce and industry, research, schools, worker protection and food. The General Radiation Protection Ordinance, Federal Law Gazette II No. 191/2006, has been in force since June 1, 2006. Based on the Radiation Protection Act, it regulates the handling of radiation sources and measures for protection against ionizing radiation. The Optical Radiation Ordinance (VOPST) is a detailed ordinance to the Occupational Safety and Health Act (ASchG). On August 1, 2020, a new radiation protection law came into force, which largely harmonized the radiation protection regulations for artificial radioactive substances and terrestrial natural radioactive substances. They are now enshrined in the General Radiation Protection Ordinance 2020. Companies that carry out activities with naturally occurring radioactive substances are now subject to the licensing or notification requirements pursuant to Sections 15 to 17 of the Radiation Protection Act 2020, unless an exemption provision pursuant to Sections 7 or 8 of the General Radiation Protection Ordinance 2020 applies. Cement production including maintenance of clinker kilns, production of primary iron and tin, lead and copper smelting are included in the scope. If a company falls within the scope of the General Radiation Protection Ordinance 2020, its owner must commission an officially authorized monitoring body.
== Biosynthesis == The largest gene in the mrbA-mrbO cluster, mrbJ, encodes a two-module nonribosomal peptide synthetase. Mirubactin assembly uses two nonproteinogenic units, 2,3-dihydroxybenzoic acid (2,3-DHB) and δ-N-formyl-δ-N-hydroxyornithine (fhOrn). MrbC and MrbD work to activate and incorporate 2,3-DHB into the nonribosomal peptide synthesis. The 2,3-DHB is incorporated on both the N- and C- termini, and is attached to the δ-N-hydroxyl group of fhOrn to form a O-acyl-hydroxamic acid ester. At the start of the assembly, 2,3-DHB is activated by MrbC and subsequently passed to MrbD, where it is attached to the arginine in the first module by MrbJ. The second module of MrbJ incorporates fhOrn, which is generated by the tailoring enzymes Amir_5066 and Amir_1095. The second addition of 2,3-DHB is followed by a hydrolytic cleavage, releasing the siderophore.
Jaundice Abnormal liver function test results Tardive dyskinesia – an often incurable movement disorder that usually results from years of continuous treatment with antipsychotic drugs, especially typical antipsychotics like flupenthixol. It presents with repetitive, involuntary, purposeless and slow movements; TD can be triggered by a fast dose reduction in any antipsychotic. Hypotension Confusional state Seizures Mania Hypomania Depression Hot flush Anergia Appetite changes Weight changes Hyperglycemia – high blood glucose (sugar) levels Abnormal glucose tolerance Pruritus – itchiness Rash Dermatitis Photosensitivity – sensitivity to light Oculogyric crisis Accommodation disorder Sleep disorder Impaired concentration Tachycardia QTc interval prolongation – an abnormality in the electrical activity of the heart that can lead to potentially fatal changes in heart rhythm (only in overdose or <10 ms increases in QTc) Torsades de pointes Miosis – constriction of the pupil of the eye Paralytic ileus – paralysis of the bowel muscles leading to severe constipation, inability to pass wind, etc. Mydriasis Glaucoma
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.
No. It is an investigational compound without approved therapeutic indications. It is sold for research purposes only in many jurisdictions.