A practical reference on DMSO stock: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
Reviewed 2026-02-11. Anything still debated is marked as such rather than presented as settled.
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.
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.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white powder | Common supplier description |
| Solubility | Soluble in DMSO and ethanol | Low solubility in water |
| Typical storage | −20 °C, desiccated, dark | For research samples |
| Analytical method | LC-MS/MS | Used for detection and quantification |
| Regulatory status | Prohibited in sport | WADA metabolic modulator class |
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.
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.
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.
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.
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.
The group takes its name from the most representative member: Bencubbin (Australia). Although these chondrites contain over 50% nickel-iron metal, they are not classified as mesosiderites because their mineralogical and chemical properties are strongly associated with CR chondrites.
A New York Times article in 1995 referred to the park as the "Town Square of Midtown" and an "office oasis" frequented by midtown office workers. Further improvements included the installation of two newsstands in 1992, one each at Fifth and Sixth Avenues. Open-air concerts in the summers, which drew thousands of people, were commenced. To lessen infestations of pigeons eating the plants, the BPC started scattering corn kernels that contained the drug azacosterol, which resulted in many pigeons becoming infertile without any other side effects. Meanwhile, financing for a restaurant in Bryant Park next to the library was finally secured in 1993. The restaurant, Bryant Park Grill, opened in 1995.
== Biography == Palmer was born in Port of Spain on the twin island Republic of Trinidad and Tobago. He is fluent in English and became a U.S. citizen. Palmer earned a chemical engineering degree at Howard University in Washington D.C in 1993 and his doctorate in chemical and biomolecular engineering at Johns Hopkins University in 1998. After completing postdoctoral work at Johns Hopkins University in 1999, Palmer joined the Chemistry Department faculty at Howard University. In 2001, he left for the University of Notre Dame to become assistant professor of chemical and biomolecular engineering. In 2006, after five years, he moved to Ohio State University to become associate professor of chemical and biomolecular engineering, and was promoted to full professor in 2012. He served as interim department chair in 2014–2015. In 2015, he was named Chair of the William G. Lowrie Department of Chemical and Biomolecular Engineering and served until 2019. In March 2020, the Ohio Board of Regents named Palmer, "Ohio Eminent Scholar," a statewide endowed chair. In August 2021, Palmer was appointed Associate Dean for research, charged with directing the College of Engineering's $138 million research enterprise.
Sources: en.wikipedia.org
==== Magnetic drug delivery ==== Magnetic nanochains are a class of new magnetoresponsive and superparamagnetic nanostructures with highly anisotropic shapes (chain-like) which can be manipulated using magnetic field and magnetic field gradient. The magnetic nanochains possess attractive properties which are significant added value for many potential uses including magneto-mechanical actuation-associated nanomedicines in low and super-low frequency alternating magnetic field and magnetic drug delivery. Cell imaging Nanoparticles have good biological labeling and sensing because of brightness and photostability; thus, certain self-assembled nanoparticles can be used as imaging contrast in various systems. Combined with polymer cross-linkers, the fluorescence intensity can also be enhanced. Surface modification with functional groups, can also lead to selective biological labeling. Self-assembled nanoparticles are also more biocompatible compared to standard drug delivery systems.
Fish protein concentrate (FPC) is a powder concentrate with medium level of protein (50-70%) and will contain some level of fat/oil (1-20%) in the powder form as well. Fish protein isolate (FPi) is a product containing less than 1% fat/oil and more than 90% protein. New manufacturing techniques are also producing hybrid FPi products where the fat/oil content is very low, (<0.3%) with the protein levels in the 80% range. The hybrid FPi does not reach 90% protein (often a definition point for an isolate) as the natural minerals are not removed and thus represent up to 15% of the final mass balance.
kinase Any of a class of enzymes which catalyze the transfer of phosphate groups from high-energy, phosphate-donating molecules such as ATP to one or more specific substrates, a process known as phosphorylation. The opposite process, known as dephosphorylation, is catalyzed by phosphatase enzymes.
Sources: en.wikipedia.org
== T == Celia White Tabor (1918–2012). American biochemist at the NIH, expert on the biosynthesis of polyamines. Herbert Tabor (1918–2020). American biochemist at NIH who studied the function of polyamines and their role in human health and disease. He was editor-in-chief of the Journal of Biological Chemistry for nearly 40 years. Member Natl. Acad. Sci. USA. Charles Tanford (1921–2009). American protein chemist at Duke University, known for analysis of the hydrophobic effect. Member Natl. Acad. Sci. USA. Ignacio Tinoco Jr. (1930–2016). American chemist at UC Berkeley, known for his pioneering work on RNA folding. Member Natl. Acad. Sci. USA. Arne Tiselius FRS (foreign associate) (1902–1971). Swedish biochemist at the University of Uppsala, who developed protein electrophoresis. Nobel Prize for Chemistry (1948). Foreign associate Natl. Acad. Sci. USA. Victor Trikojus CBE (1902–1985). Australian biochemist, head of the School of Biochemistry at the University of Melbourne (1943–1968). Joint discoverer of triiodothyronine (T3) with Frank Hird in 1948. Chen-Lu Tsou (邹承鲁 Zou Chenglu in Pinyin, 1923–2006). Chinese biochemist at the Academia Sinica, known for work on enzyme inactivation kinetics, and even more as the "face of Chinese biochemistry" for many years in the west. Member of the Academia Sinica.
=== Centimorgan: Genetic linkage === In genetics, a centimorgan (abbreviated cM) or map unit (m.u.) is a unit for measuring genetic linkage. It is defined as the distance between chromosome positions (also termed loci or markers) for which the expected average number of intervening chromosomal crossovers in a single generation is 0.01. It is often used to infer distance along a chromosome. One centimorgan corresponds to about 1 million base pairs in humans on average.
In classical SELEX, the process of randomized single stranded library generation, target incubation, and binding sequence elution and amplification described above are repeated until the vast majority of the retained pool consists of target binding sequences, though there are modifications and additions to the procedure that are often used, which are discussed below.
Sources: en.wikipedia.org
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.
Detection commonly uses liquid chromatography–tandem mass spectrometry. This method can identify the compound in urine or blood at low concentrations.
Typical guidance is −20 °C, dry, and protected from light. Solutions should be aliquoted and limited freeze–thaw cycles should be used.
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.