The short version of research chemical fits in a sentence. The long version — which is the one that helps — is below.
This page was last updated on 2026-03-26 and is reviewed periodically as new material appears.
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.
Laboratory studies often administer SR9009 by injection because oral absorption appears poor in rodents. Reported pharmacokinetic properties include rapid metabolism and low systemic exposure after oral dosing. Human pharmacokinetic data are sparse, so absorption, distribution, metabolism, and excretion in people are not well defined. Some research explores related REV-ERB compounds with improved drug-like properties. Regulatory approval for any REV-ERB agonist as a human medicine has not been granted to date.
SR9009 is a synthetic small molecule studied as an agonist of the nuclear receptors REV-ERBα and REV-ERBβ, also called NR1D1 and NR1D2. These receptors help regulate circadian rhythms and metabolic gene programs. The compound was developed for laboratory research, not as an approved therapeutic. Its identity is distinct from steroid hormones and selective androgen receptor modulators. Scientific interest centers on how REV-ERB activation changes gene expression in cells and animal models.
At the molecular level, SR9009 binds the ligand-binding domain of REV-ERB and strengthens recruitment of corepressor proteins such as NCoR and HDAC3. This increases repression of target genes, including Bmal1 and other clock-controlled and metabolic genes. In rodent studies, such changes have been linked to altered lipid handling, glucose metabolism, and energy expenditure. The precise chain of events between receptor binding and whole-body effects remains an active area of research. Findings in animals do not automatically translate to humans.
| Property | Value | Notes |
|---|---|---|
| Appearance | White to off-white powder | Typical for research-grade material |
| Solubility | Soluble in DMSO and ethanol; low aqueous solubility | Organic stock solutions are common |
| Typical storage temperature | -20 °C or lower | Protect from light and moisture |
| Common analytical method | LC-MS/MS | Used for detection and confirmation |
| Common synonyms | SR9009; Stenabolic | Stenabolic is an informal name |
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.
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.
RSeH + H2O2 → RSeOH + H2O RSeOH + GSH → GS-SeR + H2O GS-SeR + GSH → GS-SG + RSeH In the absence of thiols, selenols tend to overoxidize to produce seleninic acids. Many organoselenium compounds (selenenamides, diaryl diselenides) contain "interesting" biological activities. Their activity is attributed to their mimicry of glutathione peroxidase activity. They reduce hydroperoxides that otherwise convert to toxic byproducts and/or reactive oxygen species that can cause further damage to the cell.
=== Pyrimidine dimers === Pyrimidine dimers (also known as thymine dimers) are formed by a photochemical reaction from pyrimidine DNA bases when exposed to ultraviolet light. This cross-linking causes DNA mutations, which can be carcinogenic, causing skin cancers. When pyrimidine dimers are present, they can block polymerases, decreasing DNA functionality until it is repaired.
=== Dihydrolipoyl transacetylase (E2) === The E2 subunit, or dihydrolipoyl acetyltransferase, for both prokaryotes and eukaryotes, is generally composed of three domains. The N-terminal domain (the lipoyl domain), consists of 1–3 lipoyl groups of approximately 80 amino acids each. The peripheral subunit binding domain (PSBD), serves as a selective binding site for other domains of the E1 and E3 subunits. Finally, the C-terminal (catalytic) domain catalyzes the transfer of acetyl groups and acetyl-CoA synthesis. In Gammaproteobacteria, 24 copies of E2 form the cubic core of the pyruvate dehydrogenase complex, in which 8 E2 homotrimers are located at the vertices of the cubic core particle.
== External links == Overview of all the structural information available in the PDB for UniProt: P13693 (Human Translationally-controlled tumor protein) at the PDBe-KB. Overview of all the structural information available in the PDB for UniProt: P63028 (Mouse Translationally-controlled tumor protein) at the PDBe-KB.
== Uses == Rhodiola extracts have been used historically in medicine throughout Europe. A number of species are grown as ornamentals, but growing them is difficult outside their native subarctic and alpine climates. In traditional Chinese medicine, extracts of Rhodiola plants are used for conditions such as fatigue and altitude sickness. Currently, there is insufficient evidence to determine if Rhodiola is effective for any health condition.
Sources: en.wikipedia.org
In April 2023, Monster Beverage Corporation sued independent videogame developer Glowstick Entertainment for their horror party game Dark Deception: Monsters and Mortals. Apparently to Monster Beverage, the use of "Monster" in the title of the game and their green and black logo make it "very confusing" because of the similarities between the two. Glowstick Entertainment's head creator, Vincent Livings, had decided to fight it in court and has since won the case. Additionally later that month, it was discovered that over 100 trademark complaints had been filed in Japan, including complaints against the Pokémon (1996–), Monster Hunter (2004–), and Monster Musume (2012–) franchises, the first of which predates the Monster Energy brand by over half a decade.
Doillon started acting at age five, starring in Kung Fu Master directed by Agnès Varda. She has since worked with directors including Jean Pierre Améris, Jacques Doillon, Guillaume Canet, Abel Ferrara and Maïwenn.
Ants communicate with each other using pheromones, sounds, and touch. Since most ants live on the ground, they use the soil surface to leave pheromone trails that may be followed by other ants. In species that forage in groups, a forager that finds food marks a trail on the way back to the colony; this trail is followed by other ants, these ants then reinforce the trail when they head back with food to the colony. When the food source is exhausted, no new trails are marked by returning ants and the scent slowly dissipates. This behaviour helps ants deal with changes in their environment. For instance, when an established path to a food source is blocked by an obstacle, the foragers leave the path to explore new routes. If an ant is successful, it leaves a new trail marking the shortest route on its return. Successful trails are followed by more ants, reinforcing better routes and gradually identifying the best path. Ants use pheromones for more than just making trails. A crushed ant emits an alarm pheromone that sends nearby ants into an attack frenzy and attracts more ants from farther away. Several ant species even use "propaganda pheromones" to confuse enemy ants and make them fight among themselves. Pheromones are produced by a wide range of structures including Dufour's glands, poison glands and glands on the hindgut, pygidium, rectum, sternum, and hind tibia. Pheromones also are exchanged, mixed with food, and passed by trophallaxis, transferring information within the colony.
It has been shown that injection of peptide amphiphile solutions in vivo leads to in situ gel formation due to the presence of counterions in physiological solutions. This, along with the complete biodegradability of the materials, suggests numerous applications in in vitro and in vivo therapies.
Sources: en.wikipedia.org
=== Hormonal and dietary === Insulin is by far the most important of the hormones that have direct or indirect effects on glucokinase expression and activity in the liver. Insulin appears to affect both glucokinase transcription and activity through multiple direct and indirect pathways. While rising portal vein glucose levels increase glucokinase activity, the concomitant rise of insulin amplifies this effect by induction of glucokinase synthesis. Glucokinase transcription begins to rise within an hour of rising insulin levels. Glucokinase transcription becomes nearly undetectable in prolonged starvation, severe carbohydrate deprivation, or untreated insulin-deficient diabetes. The mechanisms by which insulin induces glucokinase may involve both of the major intracellular pathways of insulin action, the extracellular signal-regulated kinase (ERK 1/2) cascade, and the phosphoinositide 3-kinase (PI3-K) cascade. The latter may operate via the FOXO1 transactivator. However, as would be expected given its antagonistic effect on glycogen synthesis, glucagon and its intracellular second messenger cAMP suppresses glucokinase transcription and activity, even in the presence of insulin. Other hormones such as triiodothyronine (T3) and glucocorticoids provide permissive or stimulatory effects on glucokinase in certain circumstances. Biotin and retinoic acid increase GCK mRNA transcription as well as GK activity. Fatty acids in significant amounts amplify GK activity in the liver, while long chain acyl CoA inhibits it.
== Causes == Gynecomastia is thought to be caused by an altered ratio of estrogens to androgens mediated by an increase in estrogen action, a decrease in androgen action, or a combination of these two factors. Estrogen and androgens have opposing actions on breast tissue: estrogens stimulate proliferation while androgens inhibit proliferation. The cause of gynecomastia is unknown in around 25% of cases. Known causes can be physiologic (occurring normally) or non-physiologic due to underlying pathologies such as drug use, chronic disease, tumors, or malnutrition.
Myelinated A-Fibres: The A-Fibres present in the pulp can be further classified into 2 different types. A-Delta Fibres make up 90% of the A-Fibres, while the rest are A-Beta Fibres. Have a relatively low-threshold sensory apparatus. Mainly located at the pulp-dentine border at the top of the pulp, and more specifically concentrated in the pulp horn. Have a relatively small diameter with a relatively slow conduction velocity. They are still faster than C-Fibres. A-Fibres transmit signals to the brainstem and then to the contralateral thalamus. Able to respond to stimuli through a shell of calcified tissue due to the stimulus-induced fluid flow in dentinal tubules. This is known as the hydrodynamic theory. Stimuli that displaces the fluid within the dentinal tubules will trigger the intradental myelinated A-Fibres, leading to the sharp pain sensation commonly associated with dentine hypersensitivity Unmyelinated C-Fibres: They are mainly located at the core of the pulp and extend underneath the odontoblastic layer. C-Fibres have higher pain thresholds, responsible for detecting inflammatory threats. They are heavily influenced by modulating interneurons before they reach the thalamus. C-Fibre stimulation often results in a "slow pain", normally characterised as a dull and aching pain.
The serial analyses of beta thalassemic mice indicate that hemoglobin levels decrease over time, while the concentration of iron in the liver, spleen, and kidneys increases significantly. The overload of iron is associated with low levels of hepcidin. Patients with beta thalassemia also have low hepcidin levels. The observations led researchers to hypothesize that more iron is absorbed in beta thalassemia than is required for erythropoiesis. Increasing expression of hepcidin in beta thalassemic mice limits iron overload, and also decreases formation of insoluble membrane-bound globins and reactive oxygen species, and improves anemia. Mice with increased hepcidin expression also demonstrated an increase in the lifespan of their red cells, reversal of ineffective erythropoiesis and splenomegaly, and an increase in total hemoglobin levels. From these data, researchers suggested that therapeutics to increase hepcidin levels or act as hepcidin agonists could help treat the abnormal iron absorption in individuals with beta thalassemia and related disorders. In later studies with mice, erythroferrone has been suggested to be the factor that is responsible for the hepcidin suppression. Correcting hepcidin and iron levels in these mice did not improve their anemia.
The city's automotive industry played a pivotal role in the Italian economic miracle of the 1950s and 1960s, attracting hundreds of thousands of migrants to the city, particularly from the rural southern regions of Italy. The number of migrants was so high that Turin was said to be "the third southern Italian city after Naples and Palermo". The population soon reached 1 million in 1960 and peaked at almost 1.2 million in 1971. The exceptional growth gains of the city gained it the nickname of Capitale dell'automobile (Automobile Capital), being often compared with Detroit, the major centre of the U.S. automobile industry (these cities were 'twinned' as sister cities in 1998). In the 1970s and 1980s, the oil and automotive industry crisis severely hit the city, and its population began to sharply decline as jobs were lost. In 30 years, the population decreased by more than one-fourth of the 1971 total. The long population decline of the city has begun to reverse itself only in recent years; the population grew from 865,000 to slightly over 900,000 by the end of the 20th century. In 2006, Turin hosted the Winter Olympic Games.
Sources: en.wikipedia.org
Research-grade SR9009 is typically stored frozen at about minus twenty degrees Celsius, protected from light and moisture. Stock solutions are often kept in aliquots to avoid repeated freeze-thaw cycles. Specific storage conditions should follow the supplier's documentation.
Liquid chromatography with tandem mass spectrometry is widely used to detect and confirm SR9009 in laboratory samples. The technique offers high sensitivity and can distinguish the target compound from related substances. Nuclear magnetic resonance and ultraviolet detection may support identity and purity checks.
Online products labeled as SR9009 may vary in identity, purity, and actual content. Independent testing helps confirm that a sample matches its label and does not contain unexpected contaminants. This is important for reproducible research and for interpreting experimental results.
SR9009 is a synthetic research compound that activates the REV-ERBα and REV-ERBβ nuclear receptors. It is not an approved drug and has no established human therapeutic use. Most published biological data come from cell and rodent studies.