This is a working overview of research chemical, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2026-07-17. Anything still debated is marked as such rather than presented as settled.
Regulatory treatment of SR9009 varies by country and region. It is not approved as a pharmaceutical, and several jurisdictions restrict its sale for human consumption. Some authorities classify it as a research chemical, a prescription-only substance, or a prohibited performance-enhancing agent in sport. Purchasers may encounter certificates of analysis, but these documents do not guarantee identity, purity, or legality. In research settings, institutional safety reviews and controlled procurement help ensure that materials are handled under appropriate oversight. The absence of harmonized rules means that legal status can change and requires verification.
Analytical identification of SR9009 typically relies on liquid chromatography coupled with tandem mass spectrometry. In biological samples, researchers first separate the compound from matrix components using protein precipitation, liquid-liquid extraction, or solid-phase extraction. High-performance liquid chromatography with ultraviolet detection and nuclear magnetic resonance spectroscopy can support structural confirmation of reference materials. Because SR9009 is a small, relatively lipophilic molecule, reverse-phase columns and acidic mobile phases are common. Laboratories often include isotope-labeled internal standards to improve quantification and to correct for ion suppression.
Stability depends on physical form, temperature, light exposure, and solvent. Solid SR9009 is generally stored cold and dry, with protection from light to limit degradation. Dimethyl sulfoxide stocks are common for laboratory work, but repeated freeze-thaw cycles can reduce compound integrity. Aqueous solutions may be less stable than organic stocks, and the ethyl ester in the structure can be susceptible to hydrolysis under certain conditions. Researchers typically validate storage conditions and recheck purity before quantitative experiments, especially when using archived material.
Analytical identification and purity assessment often use high-performance liquid chromatography with ultraviolet detection or mass spectrometry. Liquid chromatography–tandem mass spectrometry is used to detect and quantify SR9009 in biological matrices, including urine and blood, for anti-doping or pharmacokinetic studies. Nuclear magnetic resonance spectroscopy can confirm molecular structure. Stability depends on form and storage: the solid is generally more stable than solutions, and repeated freeze–thaw cycles may degrade samples. Purity is typically reported as a percentage from a certificate of analysis.
Regulatory treatment of SR9009 varies by country and context. It is not approved as a therapeutic drug by agencies such as the United States Food and Drug Administration or the European Medicines Agency. Sports authorities list it as a prohibited substance; the World Anti-Doping Agency classifies it among hormone and metabolic modulators. Legal status for personal possession or sale differs across jurisdictions, and some countries may restrict it under analog or research chemical laws. Buyers who seek verified material often rely on independent laboratory testing because online product labels may not match contents.
Laboratory samples of SR9009 are typically handled as research chemicals rather than pharmaceuticals. Suppliers usually state that the material is for research use only and not for human or veterinary administration. Storage recommendations generally call for a freezer at approximately −20 °C, protection from light, and a desiccated environment. The solid is often described as a white to off-white powder. Solubility is commonly reported in organic solvents such as dimethyl sulfoxide and ethanol, with low solubility in water.
| Property | Value | Notes |
|---|---|---|
| Common synonyms | SR9009; Stenabolic | Nickname is not a chemical name. |
| Typical analytical method | LC-MS/MS | Often with isotope-labeled internal standard. |
| Storage temperature | -20 °C | Desiccated and protected from light. |
| Solution stability | DMSO stock; avoid freeze-thaw | Store at -20 to -80 °C. |
| Regulatory status | Not approved; varies by country | May be restricted as research chemical. |
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.
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.
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.
Identity and purity of SR9009 samples are usually checked with chromatographic and spectrometric methods. High-performance liquid chromatography can separate the compound from related impurities, while mass spectrometry provides molecular mass confirmation. Nuclear magnetic resonance spectroscopy may be used for structural verification in research settings. No single method proves biological activity, and certificates of analysis should be reviewed alongside raw data. Independent testing is often needed because online products vary widely.
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.
== Main applications == DMG-PEG 2000 has similar chemical properties to the phospholipids that make up the cell membrane. This enables lipid nanoparticles composed of it to easily merge with the cell membrane, delivering its contents.
Meta's Llama models, which have been described as open-source by Meta, were adopted by U.S. defense contractors like Lockheed Martin and Oracle after unauthorized adaptations by Chinese researchers affiliated with the People's Liberation Army (PLA) came to light. The Open Source Initiative and others have contested Meta's use of the term open-source to describe Llama, due to Llama's license containing an acceptable use policy that prohibits use cases including non-U.S. military use. Chinese researchers used an earlier version of Llama to develop tools like ChatBIT, optimized for military intelligence and decision-making, prompting Meta to expand its partnerships with U.S. contractors to ensure the technology could be used strategically for national security. These applications now include logistics, maintenance, and cybersecurity enhancements.
Bacteroides species Salmonella and Shigella Yersinia tends to be incubated at 30 °C (86 °F), which is cooler than usual Campylobacter incubated at 42 °C (108 °F), in a special environment Aeromonas Candida if the person is immunosuppressed (e.g., undergoing cancer treatment) E. coli O157 if blood is visible in the stool sample Cryptosporidium Entamoeba histolytica Intestinal parasites and their ova (eggs) can sometimes be visible to the naked eye.
== Syntheses == The Micalizio route (2011) achieved the end product in 9 steps from a commercially available acetyl-pyridine. Notable reactions include a [2,3]-Still-Wittig rearrangement and a conformationally-controlled intramolecular Mannich cyclization. The Weinreb group (2014) used a conjugative addition of an indole precursor to an oxime-substituted nitrosoalkene to generate the tetracyclic skeleton of conolidine in 4 steps. Takayama and colleagues (2016) synthesized conolidine and apparicine through a gold(I)-catalyzed exo-dig synthesis of a racemic piperidinyl aldehyde. Ohno and Fujii (2016) accessed the tricyclic pre-Mannich intermediate through a chiral gold(I) catalyzed cascade cyclization.
Sources: en.wikipedia.org
The inner workings of The Culture are not especially described in detail though it is shown that the society is populated by an empowered, educated and augmented citizenry in a direct democracy or highly democratic and transparent system of self-governance. In comparisons to the real world, intended or not, the Culture could resemble various posited egalitarian societies including in the writings of Karl Marx, the end condition of communism after a withering away of the state, the anarchism of Bakunin and Fourier et al., libertarian socialism, council communism and anarcho-communism. Other characteristics of The Culture that are recognisable in real world politics include pacifism, post-capitalism, and transhumanism. Banks deliberately portrayed an imperfect utopia whose imperfection or weakness is related to its interaction with the 'other', that is, exterior civilisations and species that are sometimes variously warred with or mishandled through the Culture's Contact section which cannot always control its intrigues and the individuals it either 'employs' or interacts with. This 'dark side' of The Culture also alludes to or echoes mistakes and tragedies in 20th century Marxist–Leninist countries, although the Culture is generally portrayed as far more 'humane' and just.
== Selected publications == Andrew E Clark; Erin J Kaleta; Amit Arora; Donna M Wolk (2013). "Matrix-assisted laser desorption ionization-time of flight mass spectrometry: a fundamental shift in the routine practice of clinical microbiology". Clinical Microbiology Reviews. 26 (3): 547–603. doi:10.1128/cmr.00072-12. PMC 3719498. PMID 23824373. Wikidata Q34653849. D M Wolk; M J Struelens; P Pancholi; et al. (2009). "Rapid detection of Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) in wound specimens and blood cultures: multicenter preclinical evaluation of the Cepheid Xpert MRSA/SA skin and soft tissue and blood culture assays". Journal of Clinical Microbiology. 47 (3): 823–826. doi:10.1128/jcm.01884-08. PMC 2650929. PMID 19144803. Wikidata Q41783624. Stephanie S Buehler; Bereneice Madison; Susan R Snyder; et al. (2016). "Effectiveness of Practices To Increase Timeliness of Providing Targeted Therapy for Inpatients with Bloodstream Infections: a Laboratory Medicine Best Practices Systematic Review and Meta-analysis". Clinical Microbiology Reviews. 29 (1): 59–103. doi:10.1128/cmr.00053-14. PMC 4771213. PMID 26598385. Wikidata Q26776404.
== History == B&O Supprettes (the name is derived from the generic term 'belladonna/opium suppository') is an "unapproved" drug according to the Food and Drug Administration (FDA) – that is, the drug existed before the Food, Drug and Cosmetic Act of 1938. Accordingly, the compound has never undergone specific medical trials, and its efficacy has never been required to be demonstrated. The FDA has put pressure on the manufacturers of this drug for this reason. The original manufacturer of the Supprettes, Eli Lilly and Company, has long since lost any patent to the drug. Amerifit, which manufactured generic Supprettes prior to 2008, was cautioned by the FDA due to the unapproved nature of the drug combination. Since 2008, Paddock Laboratories has manufactured a generic version of the Supprettes after working with the FDA on marketing issues related to the unapproved nature of the drug.
=== Uterine effects === Under normal physiological circumstances, progesterone secreted by the corpus luteum during the luteal phase of the menstrual cycle produces endometrial transformation of the estrogen-primed uterus in preparation for implantation and pregnancy. Normal progesterone production during the luteal phase is 25 mg/day on average with a range of 15 to 50 mg/day. Progesterone levels during the luteal phase range from 7 ng/mL to 22 ng/mL using liquid chromatography–tandem mass spectrometry (LC–MS/MS) per one source. Sustained progesterone levels of more than 5 ng/mL, perhaps approximately 10 ng/mL, are required for full endometrial transformation. Progesterone levels of more than 10 ng/mL are rarely associated with luteal-phase defect on the basis of endometrial biopsy. Luteal-phase levels of progesterone are said to be produced by 25 mg/day progesterone in oil solution by intramuscular injection or by 100 mg/day progesterone by vaginal or rectal administration. Progesterone by intramuscular injection in oil solution has been found to produce endometrial transformation at a dose of 10 or 20 mg/day for 14 days (total dose per cycle of 200 mg), whereas a single intramuscular injection of 200 mg progesterone in microcrystalline aqueous suspension provides endometrial transformation after 10 to 14 days. A study found full and equivalent endometrial transformation with subcutaneous injection of 25 mg/day versus 50 mg/day progesterone in aqueous solution.
=== 5-methylcytosine === Spontaneous deamination of 5-methylcytosine results in thymine and ammonia. This is the most common single nucleotide mutation. In DNA, this reaction, if detected prior to passage of the replication fork, can be corrected by the enzyme thymine-DNA glycosylase, which removes the thymine base in a G/T mismatch. This leaves an abasic site that is repaired by AP endonucleases and polymerase, as with uracil-DNA glycosylase.
Sources: en.wikipedia.org
== Music and lyrics == With songs written primarily on the road, the material is darker than Facelift. "We did a lot of soul searching on this album. There's a lot of intense feelings." Cantrell said, "We deal with our daily demons through music. All of the poison that builds up during the day we cleanse when we play". Drug use was front and center as a lyrical theme on the album. Three tracks ("Junkhead", "God Smack", and "Hate to Feel") specifically reference heroin use and its effects. Staley revealed that the album is semi-conceptual and that there are two basic themes in it. The first theme is about "dealing with kind of a personal anguish and turmoil, which turns into drugs to ease that pain, and being confident that that was the answer in a way. Then later on the songs start to slip down closer and closer to hell, and then he figures out that drugs were not, and are not, the way to ease that pain. Basically, it's the whole story of the last three years of my life." Staley described the other theme as being about "painful relationships and involvements with persons." Staley later expressed regret about the lyrical content of some songs on Dirt, explaining, "I wrote about drugs, and I didn't think I was being unsafe or careless by writing about them ... I didn't want my fans to think that heroin was cool. But then I've had fans come up to me and give me the thumbs up, telling me they're high. That's exactly what I didn't want to happen." Cantrell said in 2013: "That darkness was always part of the band, but it wasn't all about that.
== Regulation and food safety == Food safety is regulated principally by the Bangladesh Food Safety Authority under the Food Safety Act 2013. The Bangladesh Standards and Testing Institution administers product standards for domestic and imported food under the Bangladesh Standards and Testing Institution Act 2018. In July 2026, new Food Safety (Registration and Licensing) Regulations brought food businesses throughout the supply chain under a registration or licensing system administered by the Bangladesh Food Safety Authority. The rules apply to businesses including food processors, packaged-food manufacturers, importers, restaurants, bakeries and other food-service establishments.
=== Characters === Portal features two prominent characters: the player-controlled silent protagonist named Chell, and GLaDOS (Genetic Lifeform and Disk Operating System), a computer artificial intelligence that monitors and directs the player. In the English-language version, GLaDOS is voiced by Ellen McLain, though her voice has been altered to sound more artificial. The only background information presented about Chell is given by GLaDOS; the credibility of these facts, such as Chell being adopted, an orphan, and having no friends, is questionable at best, as GLaDOS is a liar by her own admission. In the "Lab Rat" comic created by Valve to bridge the gap between Portal and Portal 2, Chell's records reveal she was ultimately rejected as a test subject for having "too much tenacity"—the main reason Doug Rattmann, a former employee of Aperture Science, moved Chell to the top of the test queue.
== Clinical significance == Immunohistochemistry analysis of human myocytes has shown greater immunoreactivity of Ucn2 in myocytes of the failing heart compared to those of the healthy heart. This is a result of an innate mechanism in which Ucn2 acts to improve function of the failing heart. The pathophysiology of heart failure is often a consequence of improper calcium handling and relaxation resulting in a lower cardiac output, decreased blood flow and overall decreased heart function. Infusion of Ucn2 in healthy humans has shown a dose dependent increase in cardiac output, heart rate and left ventricle ejection fraction and a decrease in systemic vascular resistance. Ucn2 has been studied as potential treatment for individuals with heart failure.
Sources: en.wikipedia.org
The most common approach is liquid chromatography-tandem mass spectrometry, often after extraction from blood, urine, or tissue. Ultraviolet detection and nuclear magnetic resonance spectroscopy are used mainly for reference material characterization. Isotope-labeled internal standards improve accuracy.
Solid material is usually kept at -20 °C, desiccated, and protected from light. Dimethyl sulfoxide stocks should be stored cold and subjected to minimal freeze-thaw cycles. Aqueous solutions are generally less stable and should be prepared fresh when possible.
Legality depends on the country and the intended use. It is not an approved medicine, and some places restrict or ban sales for human consumption. Buyers should verify local rules and product documentation before procurement.
Legality depends on the country and the intended use. In many places it is sold as a research chemical, but sports and medicine regulations restrict it.