A practical reference on metabolic modulator: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2026-01-11 and is reviewed periodically as new material appears.
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.
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.
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.
Analytical chemists detect SR9009 with liquid chromatography-tandem mass spectrometry, commonly abbreviated LC-MS/MS. Sample preparation may involve protein precipitation, liquid-liquid extraction, or solid-phase extraction before analysis. Laboratories can target the parent compound or its metabolites, depending on the matrix and the purpose of testing. Anti-doping methods require sensitive and specific assays because concentrations in biological samples can be low. Reference standards and validated methods are essential for reliable identification and quantification.
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.
| 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 |
For long-term storage, SR9009 is typically kept as a solid at low temperature, protected from moisture and light. Desiccated conditions limit hydrolysis, while opaque containers reduce photochemical breakdown. Solutions are less stable than solids and are often stored frozen in aliquots to avoid repeated freeze-thaw cycles. Stability data are not standardized across all suppliers, so users should rely on certificate-of-analysis information when available. Degradation may appear as color change, precipitate, or decreased chromatographic purity.
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.
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.
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.
=== Disulfide bond cleavage === ECD itself and combined with other MS is very useful for proteins and peptides containing multiple disulfide bonds. FTICR combined with ECD helps to recognize peptides containing disulfide bonds. ECD could also access important sequence information by activation of higher charged proteins. Moreover, disulfide bond cleavage takes place by ECD of multiply charge proteins or peptides produced by ESI. Electron capture by these proteins releases H atom, captured by the disulfide bond to cause its dissociation.
The oxygen transmission rate of a gas through packaging is defined as the amount of oxygen permeating per unit of permeable area and per unit of time in a packaging system considering standardized test conditions (23 °C and 1 atm. partial pressure difference). It is an effective tool to estimate the barrier properties of a certain material. The determination of the OTR is usually carried out by means of a steady-state and isostatic method, reported by the ASTM D 3985 or ASTM F 1307, containing respectively standardized protocols for the measurements of the OTR of several kinds of packaging. The typical instrumentation consists in a permeation cell composed by two distinct chambers, separated by the tested material; one of the chambers is then filled with a carrier gas (e.g., nitrogen), while the other one with oxygen, hence creating the necessary driving force to let the oxygen permeate across the barrier's material.
=== Privatisation === In 1994, the Commonwealth facility was privatised by the Keating government as CSL Ltd. and was publicly listed and traded on the Australian Securities Exchange. The company completed an initial public offering in June 1994 at A$2.30 per share (76.7c adjusted for split). CSL stock is part of the S&P/ASX 20 Index.
== Political impact == In Britain the Liberal Party objected to, and later opposed, the Boer War. Later, Jameson became Prime Minister of the Cape Colony (1904–08) and one of the founders of the Union of South Africa. He was made a baronet in 1911 and returned to England in 1912. On his death in 1917, he was buried next to Cecil Rhodes and the 34 BSAC soldiers of the Shangani Patrol (killed in 1893 in the First Matabele War) in the Matobos Hills, near Bulawayo.
=== Introduction and History of DNA Legos === DNA origami has been used to assemble a range of two-dimensional and three-dimensional nanostructures; however, each different structure requires a new design and a new set of scaffold strand and staple strands. This limits scalability and structure yield efficiency. Researchers have developed “DNA brick” or “DNA Lego” technologies by making single stranded tiles (SSTs). SSTs allow for the production of larger structures without a scaffold strand and with the ease of arranging the predesigned blocks into bigger structures. Much like how actual Lego bricks allow specific assembly configurations, DNA Lego bricks bind at specific sites to form a range of shapes. Appropriate selection of blocks to include in an assembly mixture allows production of a variety of complex 3D shapes without a scaffold strand and without having to design an entirely different structure. With the DNA Lego brick approach, the DNA strand binds to neighboring strands to form a “brick”. By selecting subsets of strands to form a larger shape, researchers demonstrated that many 3D structures could be assembled from the same general set of components or bricks. The authors called this a “voxel-based” design strategy meaning that each 8-base pair interaction between bricks defines a voxel with dimensions 2.5 by 2.5 nm. Since each DNA interaction can be analogized to Lego construction, we can also claim one voxel corresponds to one stud Lego brick . This scaffold-free strategy has also been extended to larger multicomponent structures.
Sources: en.wikipedia.org
==== United States Food and Drug Administration ==== In the United States of America, which was otherwise unaffected by the scares, the US distributor of White Rabbit candies recalled the product when samples found in Hartford showed traces of melamine. The candy's maker and subsidiary of Bright Foods, Guan Sheng Yuan, issued a recall to the 50 countries to which it exported. The U.S. Food and Drug Administration said while food containing melamine below 2.5 parts per million generally did not raise concerns, its scientists were "currently unable to establish any level of melamine and melamine-related compounds in infant formula that does not raise public health concerns". On 12 November 2008, the FDA issued a general alert against all finished food products from China, saying that information received from government sources in a number of countries indicates a wide range and variety of products from a variety of producers have been manufactured using melamine-contaminated milk was a recurring problem. In late November, after the FDA found traces of melamine in one Nestle and one Mead Johnson infant product, the FDA concluded melamine or cyanuric acid alone, "at or below 1 part per million in infant formula do not raise public health concerns" in babies. The United States Food and Drug Administration opened its first overseas inspection offices in November 2008, with bureaus in Shanghai, Beijing and Guangzhou.
Loop diuretics: furosemide, bumetanide, torsemide, ethacrynic acid Thiazide diuretics: chlorothiazide, hydrochlorothiazide Thiazide-like diuretics: metolazone, indapamide, chlorthalidone Potassium-sparing diuretics: amiloride, triamterene, spironolactone, eplerenone For loop diuretics, thiazide diuretics and thiazide-like diuretics, their common side effects include hypokalemia, hyponatremia, metabolic alkalosis and hyperglycaemia. For potassium-sparing diuretics, its common side effects include hyponatremia, hyperkalemia, metabolic acidosis and sexual dysfunction specifically for spironolactone. The use of diuretics should be avoided in patients with severe dehydration, anuria (absence of urine production). Diuretics are contraindicated in cases of severe electrolyte abnormalities and should not be administered until an electrolyte balance is restored. Special attention should be given to the use of thiazide and loop diuretics as they may exacerbate diabetes and gout.
==== Declined ==== Grant Moody, Bexar County commissioner from the 3rd precinct Kyle Sinclair, former vice chair of the Bexar County Republican Party, nominee for the 20th district in 2022, and candidate for the 28th district in 2024 (ran in the 21st district) Marc Whyte, San Antonio city councilor from the 10th district (2023–present) and candidate for Texas's 121st House of Representatives district in 2018 (endorsed Lujan)
=== Motility disorders === Several disorders affect the motility of food as it travels down the esophagus. This can cause difficult swallowing, called dysphagia, or painful swallowing, called odynophagia. Achalasia refers to a failure of the lower esophageal sphincter to relax properly, and generally develops later in life. This leads to progressive enlargement of the esophagus, and possibly eventual megaesophagus. A nutcracker esophagus refers to swallowing that can be extremely painful. Diffuse esophageal spasm is a spasm of the esophagus that can be one cause of chest pain. Such referred pain to the wall of the upper chest is quite common in esophageal conditions. Sclerosis of the esophagus, such as with systemic sclerosis or in CREST syndrome may cause hardening of the walls of the esophagus and interfere with peristalsis.
A sarcomere (Greek σάρξ sarx "flesh", μέρος meros "part") is the smallest functional unit of striated muscle tissue. It is the repeating unit between two Z-lines. Skeletal muscles are composed of tubular muscle cells (called muscle fibers or myofibers) which are formed during embryonic myogenesis. Muscle fibers contain numerous tubular myofibrils. Myofibrils are composed of repeating sections of sarcomeres, which appear under the microscope as alternating dark and light bands. Sarcomeres are composed of long, fibrous proteins as filaments that slide past each other when a muscle contracts or relaxes. The costamere is a different component that connects the sarcomere to the sarcolemma. Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long fibrous tail and a globular head that binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement. Myosin can only bind to actin when the binding sites on actin are exposed by calcium ions. Actin molecules are bound to the Z-line, which forms the borders of the sarcomere. Other bands appear when the sarcomere is relaxed. The myofibrils of smooth muscle cells are not arranged into sarcomeres.
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.
Legality depends on the country and the intended use. In many places it is not approved as a medicine and may be sold only as a research chemical. Importation or possession can be restricted, and sports organizations prohibit it.