This is a working overview of certificate of analysis, written for readers who want more than a one-paragraph summary but less than a textbook.
This page was last updated on 2026-02-10 and is reviewed periodically as new material appears.
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.
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.
Most published work on SR9009 consists of preclinical studies. It is widely sold as a research chemical, a category that does not imply safety, efficacy, or pharmaceutical-grade quality. Sports anti-doping organizations have listed SR9009 as a prohibited substance, and its presence in an athlete sample can lead to sanctions. Legal status differs by country; in several jurisdictions it is not approved for human consumption and may be treated as an unapproved new drug.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ. It is not a steroid, peptide, or natural hormone. In scientific literature, it appears under the code SR9009 and in non-scientific contexts as Stenabolic. The compound was identified through chemical screening efforts aimed at targeting circadian clock components. Its status remains investigational, and no regulatory agency has approved it as a human medicine.
REV-ERB proteins help regulate daily cycles in gene expression, including genes tied to lipid and glucose metabolism. SR9009 binds these receptors and alters their activity in cell and animal experiments. Consequences observed in rodents include changes in skeletal muscle oxidative capacity, blood lipid levels, and exercise performance. The precise chain from receptor occupancy to whole-body effects is still an active area of study. Human responses cannot be assumed from rodent data.
| 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 |
SR9009 stability depends on temperature, moisture, light, and solvent. Solid material is generally kept cool and dry, while solutions may require protection from repeated warming and cooling. Degradation can appear as color changes, precipitate, or new chromatographic peaks. Researchers should follow supplier instructions and their own stability data. Long-term storage conditions for human use have not been established because the compound lacks approved clinical formulation.
SR9009 is supplied as a solid research chemical, often in milligram quantities. Laboratories typically weigh it in a controlled environment because fine powders can disperse. Stock solutions are commonly prepared in dimethyl sulfoxide and stored in small aliquots to reduce freeze-thaw cycles. Personal protective equipment and chemical fume hoods are standard when handling unknown or potent compounds. These practices address laboratory safety rather than human use.
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.
Storage conditions for research-grade SR9009 generally involve a freezer at approximately minus twenty degrees Celsius, sometimes lower for long-term preservation. Containers should remain tightly closed and protected from light. Desiccants may be used to limit moisture uptake. Solutions are often stored in aliquots to avoid repeated warming and cooling. Stability data for the compound under various conditions are limited, so laboratories typically follow supplier recommendations and verify performance through periodic analytical checks rather than assuming indefinite stability.
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.
== Terminology == In the United Kingdom, the name or names of the fruit followed by juice can only legally be used to describe a product that is 100% fruit juice, as required by the Fruit Juices and Fruit Nectars (England) Regulations and the Fruit Juices and Fruit Nectars (Scotland) Regulations 2003. However, a juice made by reconstituting concentrate can be called juice. A product described as fruit "nectar" must contain at least 25% to 50% juice, depending on the fruit. A juice or nectar including concentrate must state that it does. The term "juice drink" is not defined in the Regulations and can be used to describe any drink that includes juice, whatever the amount. Comparable rules apply in all EU member states in their respective languages. In the US, fruit juice can only legally be used to describe a product that is 100% fruit juice. A blend of fruit juice(s) with other ingredients, such as high-fructose corn syrup, is called a juice cocktail or juice drink. According to the Food and Drug Administration (FDA), the term "nectar" is generally accepted in the US and in international trade for a diluted juice to denote a beverage that contains fruit juice or puree, water, and artificial sweeteners. "No added sugar" is commonly printed on the labels of juice containers, but the products may contain large amounts of naturally occurring sugars; however, sugar content is listed with other carbohydrates on labels in many countries.
Irregularities were also reported on election day, with the election observation platform Vote62 receiving over 5,000 reports from citizens. In Chonburi Constituency 1, a large crowd gathered on 9 February to demand a recount following allegations of irregularities, including misplaced and improperly sealed ballot boxes, power outages during vote counting, vote total discrepancies, and vote tally sheets being found in a rubbish bin. The crowd remained guarding the ballot boxes overnight awaiting a decision by the Election Commission, which after a meeting asked for two days to gather and consider evidence before determining whether there would be a recount. A similar incident of crowds gathering to ask for a recount and guarding ballot boxes also occurred in Maha Sarakham Constituency 1. Following these and similar allegations, the People's Party formally requested recounts in 18 constituencies. One of its former MPs, Wiroj Lakkhanaadisorn, filed a police report against members of the Election Commission in Chonburi. The Pheu Thai Party also urged the Election Commission to investigate and address the concerns. Korn Chatikavanij, deputy leader of the Democrat Party, criticized the Election Commission, expressing disappointment that citizens were unable to feel trust in the election process. Pirapan Salirathavibhaga, the leader of the United Thai Nation Party, posted on his Facebook account demanding a nationwide recount.
The breeder reactor as its name implies creates larger quantities of 239Pu or 233U (the fissile isotopes) than it consumes. The Clean And Environmentally Safe Advanced Reactor (CAESAR), a nuclear reactor concept that would use steam as a moderator to control delayed neutrons, will potentially be able to use 238U as fuel once the reactor is started with Low-enriched uranium (LEU) fuel. This design is still in the early stages of development.
Dapagliflozin can cause low blood sugar when combined with insulin. To lessen the risk of developing ketoacidosis after surgery, the US FDA approved changes to the prescribing information for SGLT-2 inhibitors to recommend they be stopped temporarily before scheduled surgery. Canagliflozin, dapagliflozin, and empagliflozin should each be stopped at least three days before, and ertugliflozin should be stopped at least four days before scheduled surgery. The glucose-lowering effect of dapagliflozin starts to diminish in people with chronic kidney disease with reduced kidney function (eGFR <45mL/min) and may not be as effective for glycemic control. However, studies have demonstrated a renoprotective effect in reducing kidney function decline, dapagliflozin can still be used to reduce kidney function decline regardless of diabetes status. Therefore, while dapagliflozin can be used in people with diabetes and chronic kidney disease to prevent kidney function decline, further interventions may be needed for glycemic control.
=== Analogues and derivatives === Analogues and derivatives of nicotine are known. These compounds, often structurally similar and sharing affinity for nicotinic acetylcholine receptors, have applications in pharmacology (e.g., smoking cessation), pest control, and neuroscience research (e.g., multiple domain cognitive enhancement, neuroprotection).
Sources: en.wikipedia.org
The three general categories of preparation of PRP based on leukocyte and fibrin content are leukocyte-rich PRP, leukocyte reduced PRP, and leukocyte platelet-rich fibrin. The efficacy of certain growth factors in healing various injuries and the concentrations of these growth factors found within PRP are the theoretical basis for the use of PRP in tissue repair. Though not required for the process, platelets can be activated by the addition of thrombin or calcium chloride, which induce the release of the factors from alpha granules. The addition of thrombin or calcium chloride is not required as natural thrombin activates the cells upon injection. The growth factors and other cytokines present in PRP include:
Aflatoxins – originating from Aspergillus parasiticus and Aspergillus flavus. They are frequently found in tree nuts, peanuts, maize, sorghum and other oilseeds, including corn and cottonseeds. The pronounced forms of aflatoxins are those of B1, B2, G1, and G2, amongst which Aflatoxin B1 predominantly targets the liver, which will result in necrosis, cirrhosis, and carcinoma. Other forms of aflatoxins exist as metabolites such as Aflatoxin M1. In the US, the acceptable level of total aflatoxins in foods is less than 20 μg/kg, except for Aflatoxin M1 in milk, which should be less than 0.5 μg/kg. The European union has more stringent standards, set at 10 μg/kg in cereals and cereal products. These references are also adopted in other countries. Altertoxins – are those of alternariol (AOH), alternariol methyl ether (AME), altenuene (ALT), altertoxin-1 (ATX-1), tenuazonic acid (TeA), and radicinin (RAD), originating from Alternaria spp. Some of the toxins can be present in sorghum, ragi, wheat and tomatoes. Some research has shown that the toxins can be easily cross-contaminated between grain commodities, suggesting that manufacturing and storage of grain commodities is a critical practice. Citrinin Citreoviridin Cyclopiazonic acid Cytochalasins Ergot alkaloids / ergopeptine alkaloids – ergotamine Fumonisins – Crop corn can be easily contaminated by the fungi Fusarium moniliforme, and its fumonisin B1 will cause leukoencephalomalacia (LEM) in horses, pulmonary edema syndrome (PES) in pigs, liver cancer in rats and esophageal cancer in humans.
He provided the voice of the narrator for Disney World's The Hall of Presidents when Obama was added to the exhibit, and when The Hall of Presidents re-opened on July 4, 2009, at Walt Disney World Resort in Orlando, Florida. On day four of the 2016 Democratic National Convention, Freeman provided the voiceover for the video introduction of Democratic presidential candidate Hillary Clinton. On September 19, 2017, Freeman appeared in a video by the Committee to Investigate Russia group, in which he declared "we [United States] are at war" and accusing Russia of "launching cyber attacks and spreading false information". Freeman also endorsed his friend Bill Luckett, who unsuccessfully ran for Governor of Mississippi in 2011. In June 2021, he and Linda Keena, a professor at the University of Mississippi, donated $1 million to the university, establishing the Center for Evidence-Based Policing and Reform.
GSK plc (an abbreviation of its former name GlaxoSmithKline plc) is a British multinational pharmaceutical and biotechnology company. It was established in 2000 by a merger of Glaxo Wellcome and SmithKline Beecham, which was itself a merger of a number of pharmaceutical companies around the Smith, Kline & French firm. It is headquartered in London, England. GSK is the tenth-largest pharmaceutical company in the world by earnings, $9.32 billion in 2025 with $42.4 billion in revenues in the same period. As of February 2026 it is the 175th most valuable company in the world and the 12th most valuable pharmaceutical company with a market capitalisation of $122.6 billion. It was also ranked 388th on the 2025 Fortune Global 500. The company has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index, the eighth largest on the London Stock Exchange behind British pharmaceutical rival AstraZeneca, which occupies the No 1 spot in London at a value of $325 billion, 2.7x more than GSK . The company developed the first malaria vaccine, RTS,S, which it said in 2014, it would make available for five per cent above cost. Legacy products developed at GSK include several listed in the World Health Organization's List of Essential Medicines, such as amoxicillin, mercaptopurine, pyrimethamine, and zidovudine.
Spray ionization methods involve the formation of aerosol particles from a liquid solution and the formation of bare ions after solvent evaporation. Solvent-assisted ionization (SAI) is a method in which charged droplets are produced by introducing a solution containing analyte into a heated inlet tube of an atmospheric pressure ionization mass spectrometer. Just as in Electrospray Ionization (ESI), desolvation of the charged droplets produces multiply charged analyte ions. Volatile and nonvolatile compounds are analyzed by SAI, and high voltage is not required to achieve sensitivity comparable to ESI. Application of a voltage to the solution entering the hot inlet through a zero dead volume fitting connected to fused silica tubing produces ESI-like mass spectra, but with higher sensitivity. The inlet tube to the mass spectrometer becomes the ion source.
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.
It is a synthetic compound studied as an agonist of REV-ERB nuclear receptors. It is not an approved medicine and has mainly been examined in laboratory and animal research.