Everything below concerns LC-MS/MS. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-05-23. Where a claim depends on a specific study, the study is described rather than over-claimed.
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.
Pharmacokinetic data for SR9009 are limited in published literature. Some reports indicate low oral bioavailability and rapid clearance in animals, which complicates interpretation of exposure and effect. Researchers often use injected routes in preclinical work to achieve measurable systemic levels. Analytical studies rely on mass spectrometry to detect the parent compound and its metabolites. Questions about tissue distribution, active metabolites, and long-term consequences remain open. Species differences in metabolism can affect observed half-life and target engagement.
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 and metabolic gene expression. In laboratory experiments, SR9009 binds these receptors and alters transcription of genes involved in lipid handling, glucose metabolism, and mitochondrial function. It is not a naturally occurring compound and has no approved therapeutic use. Research interest stems from its ability to modify energy metabolism in cells and animal models.
| 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 |
Physicochemical behavior influences handling. SR9009 is described as a solid with limited aqueous solubility, so organic solvents such as dimethyl sulfoxide or ethanol are common in research stock solutions. Aqueous dilution can produce precipitates if the organic content is too low. Light, heat, and repeated freeze-thaw cycles may affect stability. Storage recommendations usually specify a desiccated freezer environment protected from light, but exact stability data depend on the formulation and matrix.
Detection in biological samples can be complicated by rapid metabolism and low circulating concentrations. Some studies report phase I and phase II metabolites, and analytical methods may need to target those species in addition to the parent compound. Immunoassays are not broadly available, so mass spectrometry remains the main confirmatory approach. For anti-doping testing, laboratories look for SR9009 and its metabolites using validated LC-MS methods. Open questions include how long metabolites remain detectable and how different routes of administration alter detection windows.
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.
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.
=== Insulin-induced hypokalemia === Insulin can also cause postprandial somnolence via another mechanism. Insulin increases the activity of Na/K ATPase, causing increased movement of potassium into cells from the extracellular fluid. The large movement of potassium from the extracellular fluid can lead to a mild hypokalemic state. The effects of hypokalemia can include fatigue, muscle weakness, or paralysis. The severity of the hypokalemic state can be evaluated using Fuller's Criteria. Stage 1 is characterized by no symptoms but mild hypokalemia. Stage 2 is characterized with symptoms and mild hypokalemia. Stage 3 is characterized by only moderate to severe hypokalemia.
While no other government actively supported the Boer cause, individuals from several countries volunteered and formed Foreign Volunteer Units. These primarily came from Europe, particularly the Netherlands, Germany and Sweden-Norway. Other countries such as France, Italy, Ireland (then part of the United Kingdom), and restive areas of the Russian Empire, including Congress Poland and Georgia, also formed smaller volunteer corps. Finns fought in the Scandinavian Corps. Two volunteers, George Henri Anne-Marie Victor de Villebois-Mareuil of France and Yevgeny Maximov of Russia, became veggeneraals (fighting generals) of the South African Republic.
=== Femarelle Recharge === Femarelle Recharge is intended for women experiencing common menopausal symptoms such as hot flashes, night sweats, sleep disturbances, and reduced quality of life during menopause. The formulation contains DT56a, flaxseed powder, and vitamin B6.
=== Angular velocity === A MERU (milli Earth rate unit) is a measure of angular velocity equal to 1⁄1000 of Earth's rotation rate: 1 MERU = 7.292115×10^−8 radians per second or about 0.2625 milliradians/hour. It was introduced by MIT's Instrumentation Laboratories (now Draper Labs) to measure the performance of inertial navigation systems.
== Hybridization-based methods == Several applications have been developed that interrogate SNPs by hybridizing complementary DNA probes to the SNP site. The challenge of this approach is reducing cross-hybridization between the allele-specific probes. This challenge is generally overcome by manipulating the hybridization stringency conditions.
Sources: en.wikipedia.org
The bill to allow beer and wine sales in grocery stores was withdrawn by its sponsor, Cory McCray, moments before it was poised to be killed by the Senate Finance Committee, and its House crossfile never received a vote in the House Economic Matters Committee. As of 2025, Maryland is one of five states that do not allow alcohol sales except in liquor or packaged goods stores. During the 2026 legislative session, Moore introduced the DECADE Act, which extends initiatives for companies in tax-incentive zones and eliminates certain eligibility requirements for startup businesses to qualify for assistance programs, and another bill to ban surveillance pricing and dynamic pricing in grocery stores. Moore signed the dynamic pricing ban into law in April 2026.
=== Flagship facility === UPMC Presbyterian Shadyside is UPMC's primary flagship medical entity and represents the core of UPMC's academic, teaching, trauma, specialty and research-related facilities, serving as the system's primary academic hub and Pennsylvania's largest inpatient acute care hospital. UPMC Presbyterian Shadyside includes UPMC Presbyterian hospital and the physically conjoined UPMC Eye & Ear and UPMC Montefiore hospitals as well as the UPMC Western Psychiatric Hospital that also serves as the University of Pittsburgh's Thomas Detre Hall. These facilities are all located on the western side of the University of Pittsburgh's main campus in the Oakland neighborhood of Pittsburgh. The hospitals are also physically connected to the University of Pittsburgh School of Medicine's Scaife Hall, the University of Pittsburgh School of Nursing's Victoria Hall, Falk Clinic, three of the university's biomedical science towers, and the university's Lothrop Hall dormitory, all of which are surrounded by a variety of other academic facilities. UPMC Presbyterian Shadyside also encompasses the UPMC Shadyside hospital campus which includes the University of Pittsburgh Cancer Institute in the UPMC Hillman Cancer Center which are located near the university's Centre Plaza Apartments student housing. The UPMC Shadyside facilities are located in the adjacent neighborhood of Shadyside approximately 1.5 miles (2.4 km) from the Oakland-based hospitals and are connected by regular shuttle service.
==== Protecting groups ==== Methyl esters — Also removed by acid or pig liver esterase. Can be formed from diazomethane in diethyl ether, caesium carbonate and methyl iodide in N,N‑dimethylformamide, or methanol and catalytic trimethylsilyl chloride Benzyl esters — Also removed by hydrogenolysis. Benzhydryl esters — Same as benzyl, but easier to cleave tert-Butyl esters – Also removed by acid and some reductants. Can be formed from carboalkoxylation using isobutene in dioxane and catalytic sulfuric acid or under mild conditions via their silver carboxylate using tert-butyl iodide 2,6‑Dialkylphenols (e.g. 2,6-dimethylphenol, 2,6-diisopropylphenol, 2,6-di-tert-butylphenol) — Also removed in DBU-catalyzed high-pressure methanolysis at room temperature. Allyl esters — As with allyl ethers, also removed by diverse platinum complexes – connected with acid workup Silyl esters – Also removed by base and organometallic reagents. Orthoesters – Converted to standard ester by mild aqueous acid Oxazoline – Removed by strong hot acid (pH < 1, T > 100 °C) or alkali (pH > 12, T > 100 °C), but not e.g. LiAlH4, organolithium reagents or Grignard (organomagnesium) reagents
Glycine MS Spectrum Glycine Glycine cleavage system Glycine Therapy – A New Direction for Schizophrenia Treatment? ChemSub Online (Glycine). NASA scientists have discovered glycine, a fundamental building block of life, in samples of comet Wild 2 returned by NASA's Stardust spacecraft.
Sources: en.wikipedia.org
Collagen alpha-1(IV) chain (COL4A1) is a protein that in humans is encoded by the COL4A1 gene on chromosome 13. It is ubiquitously expressed in many tissues and cell types. COL4A1 is a subunit of the type IV collagen and plays a role in angiogenesis. Mutations in the gene have been linked to diseases of the brain, muscle, kidney, eye, and cardiovascular system. The COL4A1 gene also contains one of 27 SNPs associated with increased risk of coronary artery disease.
=== Voice acting === As an actor, French appeared on the 1996 NBC miniseries Pandora's Clock as a non-commissioned officer. He was best known for voice acting work in video games by Valve Corporation, most notably Father Grigori in Half-Life 2, Bill in Left 4 Dead and Left 4 Dead 2 and the Elder Titan in Dota 2. He additionally voiced the Scientist in Gunman Chronicles and the Fisherman in the tech demo Half-Life 2: Lost Coast.
=== Stops and searches === A 2015 report conducted by the US Department of Justice found that black drivers in Ferguson, Missouri, were over twice as likely to be searched during vehicle stops but were found in possession of contraband 26% less often than white drivers. A 2016 report conducted by the San Francisco District Attorney's Office concluded that racial disparities exist regarding stops, searches, and arrests by the San Francisco Police Department and that the disparities were especially salient for the black population. Blacks made up almost 42% of all non-consensual searches after a stop but accounted for fewer than 15% of all stops in 2015. Of all people searched without consent, Black and Hispanic people had the lowest "hit rates" (i.e., the lowest rate of contraband recovered). A 2016 Chicago Police Accountability Task Force report found that black and Hispanic drivers were searched by the Chicago Police more than four times more frequently than white drivers, but white drivers were found with contraband twice as often as black and Hispanic drivers.
By the time of the 2023 election, Peña was considered a conservative politician who opposes the legalization of abortion and same-sex marriage. In May 2017, however, he had stated that he was in favor of same-sex marriage, while saying in regards of abortion that he was open for it to "be discussed in a sincere environment and without prejudice". He reversed position shortly afterwards following criticism from conservative sectors. During his 2023 campaign, he promised to create 500,000 jobs. He also ruled out raising taxes. On foreign policy, Peña pledged to maintain Paraguay's diplomatic relations with the Republic of China (Taiwan). In May 2023, Peña announced that he intended to move the Paraguayan embassy in Israel from Tel Aviv to Jerusalem after being sworn in as president; a move that was previously made by Horacio Cartes in 2018, but reversed by Mario Abdo Benítez later that year. Peña eventually attended the inauguration of said embassy in December 2024. Peña and his government expressed vocal support for Israel during the Gaza war and the Twelve-Day War, with Paraguay siding with Israel during South Africa's genocide case against Israel. As president, Paraguay restored diplomatic relations with Venezuela in November 2023; relations were strained since 2019. Relations between the two nations were broken again in February 2025, however, after Peña recognized Edmundo González as the winner of the 2024 Venezuelan presidential election. On the 2026 United States intervention in Venezuela, Peña stated that "it can only bring good news".
=== Trade === Crude oil is traded as a future on both the NYMEX and ICE exchanges. Futures contracts are agreements in which buyers and sellers agree to purchase and deliver specific amounts of physical crude oil on a given date in the future. A contract covers any multiple of 1,000 barrels and can be purchased up to nine years into the future.
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 research compound that activates REV-ERB nuclear receptors. It is not an approved drug or dietary supplement. Most information comes from cell and animal studies.