A practical reference on HPLC-MS: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
Reviewed 2026-07-03. Anything still debated is marked as such rather than presented as settled.
Regulatory and sporting contexts treat SR9009 as a prohibited substance in many elite competitions. Its presence on banned lists reflects concerns about performance enhancement and unknown long-term safety. Analytical chemists have developed methods to detect the parent compound and its metabolites in urine and blood. Literature discussions distinguish between in vitro potency, animal pharmacology, and anecdotal human reports. The latter are difficult to verify because products sold online may lack purity or contain different compounds.
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, lipid metabolism, and inflammatory gene expression. In cell and animal experiments, SR9009 alters transcription of clock-controlled genes and metabolic pathways. The compound is not a hormone and does not resemble classical steroid structures. Its activity depends on binding to the ligand-binding domain of REV-ERB, where it can modify corepressor recruitment.
Research interest in SR9009 grew from studies of circadian biology and metabolic disease. Preclinical reports describe effects on exercise capacity, muscle metabolism, and blood lipid levels in rodents, but these findings come from controlled laboratory settings. The compound has low oral bioavailability in animals, which limits systemic exposure after swallowing. Investigators often use injected routes in experiments to achieve measurable plasma concentrations. Human clinical data are sparse, no approved therapeutic product exists, and whether animal effects translate to humans remains an open question.
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.
| Property | Value | Notes |
|---|---|---|
| Chemical class | Synthetic REV-ERB agonist | Binds REV-ERBα and REV-ERBβ in preclinical models |
| Molecular formula | C20H24ClN3O4S | Reported for the parent compound |
| CAS Registry Number | 1379686-30-2 | Common identifier in chemical databases |
| Appearance | Off-white to pale yellow solid | Typical research chemical solid |
| Solubility | Soluble in DMSO and ethanol; low in water | Class: small organic molecule |
Laboratory identification of SR9009 typically relies on chromatographic separation coupled to mass spectrometry, often with ultraviolet detection as a secondary check. Nuclear magnetic resonance spectroscopy can confirm molecular structure when a reference standard is available. Because many suppliers sell the compound as a research chemical, independent identity testing is important for experimental reproducibility. A single retention time is not sufficient proof of identity, especially when related compounds may be present. Purity assessments usually report a percentage based on area normalization.
SR9009 is generally described as poorly soluble in water and more soluble in organic solvents such as dimethyl sulfoxide and ethanol. Stock solutions are commonly prepared in an organic solvent before dilution into an aqueous buffer or vehicle. Precipitation can occur if the organic fraction is reduced too quickly or if the final concentration exceeds the compound's solubility limit. Sonication or gentle warming may aid dissolution in some protocols, but excessive heat can promote degradation. Container material and pH can also influence observed solubility.
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.
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.
== Side effects and withdrawal from market == On April 7, 2005, Pfizer withdrew Bextra from the U.S. market on recommendation by the FDA, citing an increased risk of heart attack and stroke and also the risk of a serious, sometimes fatal, skin reaction. This was a result of recent attention to prescription NSAIDs, such as Merck's Vioxx. Other reported side effects were angina and Stevens–Johnson syndrome. Pfizer first acknowledged cardiovascular risks associated with Bextra in October 2004. The American Heart Association soon after was presented with a report indicating patients using Bextra while recovering from heart surgery were 2.19 times more likely to suffer a stroke or heart attack than those taking placebos. In a large study published in The Journal of the American Medical Association in 2006, valdecoxib appeared less adverse for renal (kidney) disease and heart arrhythmia compared to Vioxx, but elevated renal risks were slightly suggested.
17 October Fly Navy, about the Nimitz class carrier the USS Theodore Roosevelt (CVN-71) (TR) which sailed through the Suez Canal and the Mediterranean Sea, with 6,000 sailors; the Grumman F-14 Tomcat, the McDonnell Douglas F/A-18 Hornet, and the Grumman A-6 Intruder; Operation Deny Flight off Bosnia; on 28 June 1993 the carrier left the US to patrol the no fly zone over Iraq; George L Markfelder; it had 4.5 acres of flight deck, with around eighty aircraft; Jeff Lewis, an Intruder pilot; the Tomcat entered service in 1974; John Lehman, United States Secretary of the Navy from 1981–87; Admiral Leighton W. Smith Jr., deputy operations director of the US Navy; Captain Stanley Bryant, commanding officer of the TR; on 15 July 1993 the TR travelled through the Suez Canal; the carrier's aircraft dropped 2,400 tonnes of bombs in Desert Storm; Lieutenant Bill Grap, a Tomcat pilot; the galley of the TR that served 8,600 meals a day, needing around 3,000 eggs a day; Captain Mark Wise, Hornet pilot; Admiral Thomas Hinman Moorer, Chairman of the Joint Chiefs of Staff from 1970–74; inspecting a Grumman Tomcat; Commander Richard Johnson, in charge of the flight deck; the yellow-coloured flight deck crew taxi the aircraft; the green-coloured flight deck crew launch the aircraft; the Hornet launch is controlled by its onboard computers, not the pilot, travelling from 0 to 160 mph in two seconds; a US Navy berthing compartment, holding around seventy airmen; Admiral Jay L.
"Attogram sensing of trinitrotoluene with a self-assembled molecular gelator". Journal of the American Chemical Society. 134 (10): 4834–4841. doi:10.1021/ja210728c. PMID 22352376. SS Babu, VK Praveen, Ajayaghosh, Ayyappanpillai (2014). “Functional π-gelators and their applications”. Chem. Rev. 2014, 114, 4, 1973-2129. https://doi.org/10.1021/cr400195e R, D, Mukhopadhyay.; and Ajayaghosh, Ayyappanpillai (2015). “Living supramolecular polymerization”. Science 2015, 349, 241.doi:10.1126/science.aac7422 S, Prasanthkumar.; S, Ghosh.; V, C, Nair.; A, Saeki.; S, Seki.; and Ajayaghosh Ayyappanpillai (2015). “Organic Donor-Acceptor Assemblies to Coaxial p-n Heterojunctions with High Photoconductivity”. Angew. Chem., Int. Ed. 2015, 54, 946-950. https://doi.org/10.1002/anie.201408831. B, Vedhanarayanan.; V, S, Nair.; V, C, Nair.; and Ajayaghosh, Ayyappanpillai (2016). “Formation of Coaxial Nanocables with Amplified Supramolecular Chirality through an Interaction between Carbon Nanotubes and a Chiral p-Gelator”. Angew. Chem., Int. Ed. 2016, 55, 10345-10349. https://doi.org/10.1002/anie.201605354. V, S, Nair.; R, D, Mukhopadhyay.; A, Saeki.; S, Seki.; and Ajayaghosh, Ayyappanpillai (2016). “A p-Gel Scaffold for Assembling Fullerene to Photoconducting Supramolecular Rods: Non-Equilibrium Self-Assembly of C60 in a p-Gel”. Science Advances 2016, 2, e1600142. doi:10.1126/sciadv.1600142 R, D, Mukhopadhyay.; B, Vedhanarayanan.; and Ajayaghosh, Ayyappanpillai (2017). “Creation of 'Rose Petal' and 'Lotus Leaf' Effects on Alumina by Surface Functionalization and Metal Ion Coordination”. Angew.
Pheochromocytoma Prolactin-dependent tumors such as pituitary prolactinomas and breast cancer Long QT syndrome Coma Circulatory collapse Subcortical brain damage Blood dyscrasia Parkinson's disease Dementia with Lewy bodies
Sources: en.wikipedia.org
=== Industrial cleaning agent === Sulfuric acid is used in steelmaking and other metallurgical industries as a pickling agent for removal of rust and fouling. Used acid is often recycled using a spent acid regeneration (SAR) plant. These plants combust spent acid with natural gas, refinery gas, fuel oil or other fuel sources. This combustion process produces gaseous sulfur dioxide (SO2) and sulfur trioxide (SO3) which are then used to manufacture "new" sulfuric acid. Hydrogen peroxide (H2O2) can be added to sulfuric acid to produce piranha solution, a powerful but potentially hazardous cleaning solution with which substrate surfaces can be cleaned. Piranha solution is typically used in the microelectronics industry, and also in laboratory settings to clean glassware.
Systematic botany is part of systematic biology, which is concerned with the range and diversity of organisms and their relationships, particularly as determined by their evolutionary history. It involves, or is related to, biological classification, scientific taxonomy and phylogenetics. Biological classification is the method by which botanists group organisms into categories such as genera or species. Biological classification is a form of scientific taxonomy. Modern taxonomy is rooted in the work of Carl Linnaeus, who grouped species according to shared physical characteristics. These groupings have since been revised to align better with the Darwinian principle of common descent – grouping organisms by ancestry rather than superficial characteristics. While scientists do not always agree on how to classify organisms, molecular phylogenetics, which uses DNA sequences as data, has driven many recent revisions along evolutionary lines and is likely to continue to do so. The dominant classification system is called Linnaean taxonomy. It includes ranks and binomial nomenclature. The nomenclature of botanical organisms is codified in the International Code of Nomenclature for algae, fungi, and plants (ICN) and administered by the International Botanical Congress. Kingdom Plantae belongs to Domain Eukaryota and is broken down recursively until each species is separately classified. The order is: Kingdom; Phylum (or Division); Class; Order; Family; Genus (plural genera); Species.
==== Trocar ==== A trocar is a long metallic rod with a sharp end used to aspirate cavities. This is done to remove bodily fluids and intestinal substance that causes more decomposition. It is inserted through the abdominal wall two inches superior and two inches to the right of the navel. A hypovalve trocar is used to introduce embalming solution into tissue when the circulatory system has failed. This is referred to as hypodermic embalming.
Sources: en.wikipedia.org
SR9009 is a synthetic small molecule studied as an agonist of the REV-ERB nuclear receptors. It is not an approved medicine, and its effects in humans are not well characterized.
No. It is a synthetic ligand that binds nuclear receptors, not a steroid or peptide hormone. Its activity depends on receptor binding rather than endocrine secretion.
Clinical evidence is limited. Most published data come from cell and animal experiments. Human safety and efficacy remain uncertain.
It is a synthetic REV-ERB agonist used mainly in preclinical research. It is not an approved medicine for human use.