Everything below concerns research chemical. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2025-11-27. 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.
Several misconceptions surround SR9009. It is often described as a SARM, a steroid, or an exercise pill, but its known target is the REV-ERB receptor family. Rodent studies have examined exercise capacity and metabolic markers, yet human outcomes remain unproven. Oral bioavailability appears low in animals, and human pharmacokinetics are not well characterized. Online products may contain impurities or different compounds, so identity and purity testing are important for research use.
Analytical chemists detect SR9009 with liquid chromatography-tandem mass spectrometry, commonly abbreviated LC-MS/MS. Sample preparation may involve protein precipitation, liquid-liquid extraction, or solid-phase extraction before analysis. Laboratories can target the parent compound or its metabolites, depending on the matrix and the purpose of testing. Anti-doping methods require sensitive and specific assays because concentrations in biological samples can be low. Reference standards and validated methods are essential for reliable identification and quantification.
Regulatory agencies have not approved SR9009 for human therapeutic use. It is typically sold as a research chemical with labels stating that it is not for human consumption. The World Anti-Doping Agency prohibits the substance in sport, generally under the category of non-approved substances. Customs and national laws may restrict importation, sale, or possession. Product quality and legal status can vary by country and vendor, and therapeutic claims are not permitted in regulated advertising because the compound lacks approval.
| 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 |
Regulatory treatment of SR9009 reflects its investigational status. The compound has no approved human therapeutic indication, and sports authorities prohibit its use. It appears on anti-doping lists as a non-approved substance or metabolic modulator, depending on the list version. Products sold online as research chemicals are not quality-controlled medicines, so their identity and purity can differ from the label. Such products may also contain unlisted compounds, which complicates both testing and safety assessment.
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.
Identity and purity testing for SR9009 commonly uses liquid chromatography coupled with tandem mass spectrometry. This method separates the compound from matrix components and detects it by mass-to-charge transitions, providing sensitive and specific confirmation. Nuclear magnetic resonance spectroscopy can support structural identification, while high-performance liquid chromatography with ultraviolet detection may estimate purity. Because online products labeled as SR9009 may contain other substances or no active compound at all, independent verification is important in research settings. Certificates of analysis are useful but not a substitute for in-house testing.
Laboratory samples of SR9009 are typically supplied as a white to off-white powder. The compound dissolves readily in organic solvents such as dimethyl sulfoxide and ethanol, while its solubility in water is low. Because of this solubility profile, researchers often prepare concentrated stock solutions in an organic solvent before diluting them into aqueous assay buffers. Light exposure, moisture, and repeated freeze-thaw cycles can degrade many small molecules, so handling procedures usually aim to minimize these factors. Purity is commonly checked before use.
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.
At the molecular level, SR9009 binds REV-ERBα and REV-ERBβ and alters their repressive activity on target genes. These nuclear receptors help regulate the circadian clock, lipid synthesis, glucose metabolism, and inflammatory pathways. By changing transcription, the compound can shift the timing or magnitude of downstream metabolic processes in model systems. It does not act through androgen receptors or adenosine receptors, which distinguishes it from several substances sold for athletic performance. Whether the same transcriptional changes occur in humans at tolerable exposures remains an open question because controlled human studies are lacking.
Preclinical reports describe effects on exercise endurance, mitochondrial content, and lipid profiles in rodents, but these findings come from specific experimental conditions. Many studies use high doses or delivery methods that may not translate directly to human use. SR9009 has been reported to have low oral bioavailability and a short half-life, which complicates interpretation of oral dosing studies. It is not established as safe or effective for any indication. Literature discussions often separate its pharmacological mechanism from unverified claims made in fitness and supplement markets.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not an approved medicine and has no established human therapeutic use. The compound appears in scientific literature as a tool for probing circadian and metabolic regulation. Online sellers often label it as a research chemical, sometimes using the nickname Stenabolic. Its chemical identity is distinct from selective androgen receptor modulators, stimulants, and peroxisome proliferator-activated receptor delta agonists. Researchers use it mainly in cell and animal experiments.
=== Metabolism === The metabolization of nitazenes is species-dependent. In humans, the main degradation pathways are N-deethylation and, in cases of 4'-ethers, O-dealkylation. The 4'-hydroxy compounds are eliminated more quickly via the urine due to higher hydrophilicity and are predominantly detectable in the urine. CYP3A4 or CYP2C8 are likely to be involved in N-deethylation. Reduction of the nitro group occurs extrahepatically, probably via bacteria of the intestinal flora. Bioconjugates are excreted as various O-glucuronides. The N3 oxide is a secondary metabolite in humans. The 4'-hydroxy compounds in urine and the N-deethyl compounds in blood serve as forensic biomarkers.
In 2006, Nescafé launched the new coffee machine system "Dolce Gusto" ("sweet taste" in Italian). The system allows consumers to make various styles of coffees themselves (cappuccino, latte macchiato, espresso, lungo, etc.). Additionally, hot chocolate and cold drinks can be prepared with the machine. The machines are now sold in more than 60 countries. Unlike other Nescafé products, most Dolce Gusto beverages use roasted and ground coffee beans, instead of instant coffee. In the UK in August 2009, Nescafé unveiled a £43 million ad campaign for Nescafé, focusing on the purity of its coffee and featuring the strapline "Coffee at its brightest". Nescafé was ranked 153rd among India's most trusted brands according to the Brand Trust Report 2012, a study conducted by Trust Research Advisory. In the Brand Trust Report 2013, Nescafé was ranked 230th among India's most trusted brands and subsequently, according to the Brand Trust Report 2014, Nescafé was ranked 209th among India's most trusted brands. Nestle India has branded instant coffee as Nescafe Classic and the 70:30 mix of instant coffee and chicory as Sunrise. In Australia and New Zealand, the original instant coffee is branded "Blend 43", originally to differentiate product made locally from imported beans, from the imported version. In Pakistan, Nescafe launched an annual music show based on the same theme as of Coke Studio, named Nescafé Basement.
An adverse reaction, the nature or severity of which is not consistent with the applicable product information (e.g., Investigator's Brochure for an unapproved investigational product or package insert/summary of product characteristics for an approved product). (ICH E6)
Soybean meal, or soymeal, is the material remaining after solvent extraction of oil from soybean flakes, with a 50% soy protein content. The meal is 'toasted' (a misnomer because the heat treatment is with moist steam) and ground in a hammer mill. Ninety-seven percent of soybean meal production globally is used as livestock feed. Soybean meal is also used in some dog foods.
carbanion Any organic ion with a negative charge on a carbon atom, i.e. an ion of the general formula R3C−. Carbanions are frequently intermediate species in certain organic reactions. Contrast carbocation.
Sources: en.wikipedia.org
Head of Change and Labs, Information and Digital Directorate, Foreign, Commonwealth and Development Office. For services to British Foreign Policy. Dr. Rosemary Joy Trevelyan. Director, The Tropical Biology Association. For services to Environmental Science and International Conservation. Pamela Vipond. Deputy Director, Olympic Solidarity, the International Olympic Committee. For services to Sport. Paul Walker. Co-Founder and Co-Director, Wildtracks, Belize. For services to Conservation and Biodiversity in Belize. Zoe Elizabeth Walker. Co-Founder and Co-Director, Wildtracks, Belize. For services to Conservation and Biodiversity in Belize. David Justin Warmback. Honorary Consul, Durban, South Africa. For services to British Nationals in South Africa. Christopher Michael Wicker. President and Trustee, Hertford British Hospital Charity; Secretary General, Save the Valletta Skyline Appeal. For services to Charity and to British Nationals in France and Malta. Steven Leonard Williams. Kyaninga Child Development Centre and Kyaninga Forest Foundation, Uganda. For services to Disabled Children and Local Communities in Western Uganda.
A reference range in medicine is the range or the interval of values that is deemed normal for a physiological measurement in healthy persons (for example, the amount of creatinine in the blood, or the partial pressure of oxygen). It is a basis for comparison for a physician or other health professional to interpret a set of test results for a particular patient. Some important reference ranges in medicine are reference ranges for blood tests and reference ranges for urine tests.
== Selected publications == Mojsov, Svetlana; Merrifield, R. B. (1984–12). "An improved synthesis of crystalline mammalian glucagon". European Journal of Biochemistry. 145 (3): 601–605. doi:10.1111/j.1432-1033.1984.tb08599.x. ISSN 0014–2956. Svetlana Mojsov; Gordon C. Weir; Joel F. Habener (1987). "Insulinotropin: glucagon-like peptide I (7-37) co-encoded in the glucagon gene is a potent stimulator of insulin release in the perfused rat pancreas". Journal of Clinical Investigation. 79 (2): 616–619. doi:10.1172/jci112855. PMC 424143. PMID 3543057. Wikidata Q40920945. S Mojsov; G Heinrich; I B Wilson; M Ravazzola; L Orci; J F Habener (1986). "Preproglucagon gene expression in pancreas and intestine diversifies at the level of post-translational processing". Journal of Biological Chemistry. 261 (25): 11880–11889. doi:10.1016/s0021-9258(18)67324-7. PMID 3528148. Wikidata Q68895656. Nathan, David M; Schreiber, Eric; Fogel, Howard; Mojsov, Svetlana; Habener, Joel F (1992-02-01). "Insulinotropic Action of Glucagonlike Peptide-I-(7–37) in Diabetic and Nondiabetic Subjects". Diabetes Care. 15 (2): 270–276. doi:10.2337/diacare.15.2.270. ISSN 0149–5992
In 2024, Dalman and colleagues described the remains of a tyrannosaur discovered in 1983 in the Campanian-early Maastrichtian Hall Lake Formation in New Mexico. Reposited at the New Mexico Museum of Natural History and Science, the fossil material (NMMNH P-3698) consists of the right postorbital, right squamosal, left palatine, and an incomplete maxilla from the skull, the left dentary, right splenial, right prearticular, right angular and right articular from the lower jaws, isolated teeth, and chevrons. Some of the bones were briefly mentioned in 1984 as belonging to T. rex, and described in 1986. Lehman and Carpenter (1990) suggested that NMMNH P-3698 belonged to a new tyrannosaurid genus, while Carr and Williamson (2000) disagreed with their claim. Sullivan and Lucas (2015) argued that there is little evidence to support NMMNH P-3698 as a specimen of Tyrannosaurus rex, so they tentatively classified it as cf. Tyrannosaurus sp.; they also considered that the McRae tyrannosaur lived before the Lancian (before 67 million years ago) based on its probable association with the Alamosaurus fossil.
Sources: en.wikipedia.org
=== Reemergence === The use of animal glue, as well as some other types of glues, largely vanished in Europe after the decline of the Western Roman Empire until the 16th to 18th centuries, when wooden furniture started to surge as a major craft. During the Middle Ages, fish glue remained a source for painting and illuminating manuscripts. Since the 16th century, hide glue has been used in the construction of violins. Amerindians used hoof glue primarily as a binder and as a water-resistant coating by boiling it down from leftover animal parts and applying it to exposed surfaces. They occasionally used hide glue as paint to achieve patterns after applying pigments and tanning to hides. Hoof glue would be used for purposes aside from hides, such as as a hair preservative. The Assiniboine preferred longer hair, so they would plaster the strands with a mixture of red earth and hoof glue. It was also used to bind feathers and equipment together.
A number of diseases can affect bone, including arthritis, fractures, infections, osteoporosis and tumors. Conditions relating to bone can be managed by a variety of doctors, including rheumatologists for joints, and orthopedic surgeons, who may conduct surgery to fix broken bones. Other doctors, such as rehabilitation specialists may be involved in recovery, radiologists in interpreting the findings on imaging, and pathologists in investigating the cause of the disease, and family doctors may play a role in preventing complications of bone disease such as osteoporosis. When a doctor sees a patient, a history and exam will be taken. Bones are then often imaged, called radiography. This might include ultrasound X-ray, CT scan, MRI scan and other imaging such as a Bone scan, which may be used to investigate cancer. Other tests such as a blood test for autoimmune markers may be taken, or a synovial fluid aspirate may be taken.
== Health == Type V Collagen studies show that Collagen V plays some other roles in different parts of the body. These roles can be both beneficial and harmful. Beneficial roles that Type V collagen plays in the body are:
=== Pancreatic cancer cells === This type of collagen can cause an increase in pancreatic cancer cells and is able to inhibit apoptosis through an autocrine loop. This autocrine loop provides essential cell survival signals to the pancreatic cancer cells. Type IV collagen is expressed close to the cancer cells in vivo, forming basement membrane like structures on the cancer cell surface that colocalize with the integrin receptors. The interaction between type IV collagen produced by the cancer cell, and integrins on the surface of the cancer cells, are important for continuous cancer cell growth, maintenance of a migratory phenotype, and for avoiding apoptosis.
In addition to the base stations, the Index's headset and controllers feature Inertial Measurement Units (IMUs) that provide rapid updates on movement and orientation. The IMUs track motion at several hundred Hz, but are prone to drift. The Lighthouse system compensates for this drift by using the base stations’ lasers to provide a precise positional reference, integrating this data with the IMU information to maintain accurate tracking even during fast movements. This combination of external base stations and internal sensors on the tracked devices ensures the Valve Index provides accurate and responsive tracking performance.
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.
Legality depends on the country and the intended use. In many places it is not approved as a medicine and may be sold only as a research chemical. Importation or possession can be restricted, and sports organizations prohibit it.