Everything below concerns LC-MS. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Updated 2026-03-01. Numbers and descriptions here follow the published literature rather than marketing material.
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.
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.
| 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. |
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.
At the molecular level, SR9009 binds REV-ERBα and REV-ERBβ and alters their repressive activity on target genes. These nuclear receptors help regulate the circadian clock, lipid synthesis, glucose metabolism, and inflammatory pathways. By changing transcription, the compound can shift the timing or magnitude of downstream metabolic processes in model systems. It does not act through androgen receptors or adenosine receptors, which distinguishes it from several substances sold for athletic performance. Whether the same transcriptional changes occur in humans at tolerable exposures remains an open question because controlled human studies are lacking.
Handling practices for SR9009 focus on minimizing degradation and contamination. The solid is generally stored desiccated at or below -20 °C, protected from light and moisture. Stock solutions are often prepared in dimethyl sulfoxide or ethanol, then aliquoted to avoid repeated freeze–thaw cycles. Aqueous solubility is low, so formulations for animal studies may require cosolvents or suspending agents. Personnel should follow institutional chemical safety procedures, because toxicological data for humans are incomplete.
Regulatory status varies by country and intended use. Major drug agencies have not granted marketing authorization for SR9009 as a medicine, and it is not listed as a controlled substance in many jurisdictions. It is often sold as a research chemical, a category that may fall outside pharmaceutical manufacturing rules. Buyers should verify local laws and supplier documentation, including certificates of analysis. The lack of standardized quality controls raises concerns about identity, purity, and actual content in products marketed online.
There are many causes of acute liver failure aside from acetaminophen toxicity; these include viral hepatitis—including hepatitis A (rarely), hepatitis B, hepatitis C (rarely), hepatitis E (especially in pregnant women), Epstein–Barr virus, cytomegalovirus and varicella zoster virus -- Wilson's disease, the toxin of the death cap mushroom (Amanita phalloides), alcohol, autoimmune hepatitis, Budd–Chiari syndrome, other medications (including halothane, hormonal contraception, and isoniazid), recreational drugs (including ecstasy [1]) and, rarely, tumours infiltrating the liver. In patients with non-acetaminophen acute liver failure, the following criteria were identified as being associated with a poor prognosis:
==== Speech by Pedro Castillo ==== Against the backdrop of the ongoing political crisis, with parliamentary groups refusing to grant confidence to the government and even loyal ministers Roberto Sánchez and Hernando Cevallos expressing dissatisfaction, President Pedro Castillo gave a speech at 6:00 p.m. on 4 February 2022. In it, he announced a cabinet reshuffle and reorganization, without specifying whether he intends to replace the president of the council. At the time of the speech, a demonstration was taking place in front of the Government Palace demanding the resignation of Héctor Valer and against the appointment of the Minister of Women Katy Ugarte, who had spoken out against education in gender history and LGBT, in April 2021.
Philip E. Dawson is a scientist and academic leader, known for his contributions to the field of chemistry, particularly in synthetic protein chemistry and peptide science. He currently serves as the Dean of Graduate and Postdoctoral Studies at Scripps Research, where he is also a professor in the Department of Chemistry.
== History == 3-HO-PCP was mentioned by a chemist under the pseudonym "John Q. Beagle" in 1999 in a post on The Hive. The psychoactive effects of 3-HO-PCP have been described by Bluelight users even before its availability as a research chemical in 2009.
Sources: en.wikipedia.org
=== DSM-5 === The fifth edition of the DSM uses the term substance use disorder to refer to a spectrum of drug use-related disorders. The DSM‑5 eliminates the terms abuse and dependence from diagnostic categories, instead using the specifiers of mild, moderate, and severe to indicate the extent of disordered use. The number of diagnostic criteria present in a given case determines these specifiers. In the DSM‑5, the term drug addiction is synonymous with severe substance use disorder. The DSM‑5 introduced a new diagnostic category for behavioral addictions. Problem gambling is the only condition included in this category in the fifth edition. Internet gaming disorder is listed as a "condition requiring further study" in the DSM‑5. Past editions have used physical dependence and the associated withdrawal syndrome to identify an addictive state. Physical dependence occurs when the body has adjusted by incorporating the substance into its "normal" functioning – i.e., attains homeostasis – and therefore physical withdrawal symptoms occur on cessation of use. Tolerance is the process of the body adapting to a substance so that larger amounts are needed for the same effect. Withdrawal describes the physical and psychological symptoms that appear when a substance the body has adapted to is reduced or stopped. Which symptoms occur, and how dangerous they are, depends heavily on the substance: withdrawal from alcohol or benzodiazepines can be life-threatening, whereas withdrawal from most other substances is distressing but not usually dangerous.
Simple diatomic molecules have only one bond and only one vibrational band. If the molecule is symmetrical, e.g. N2, the band is not observed in the IR spectrum, but only in the Raman spectrum. Asymmetrical diatomic molecules, e.g. carbon monoxide (CO), absorb in the IR spectrum. More complex molecules have many bonds, and their vibrational spectra are correspondingly more complex, i.e. big molecules have many peaks in their IR spectra. The atoms in a CH2X2 group, commonly found in organic compounds and where X can represent any other atom, can vibrate in nine different ways. Six of these vibrations involve only the CH2 portion: two stretching modes (ν): symmetric (νs) and antisymmetric (νas); and four bending modes: scissoring (δ), rocking (ρ), wagging (ω) and twisting (τ), as shown below. Structures that do not have the two additional X groups attached have fewer modes because some modes are defined by specific relationships to those other attached groups. For example, in water, the rocking, wagging, and twisting modes do not exist because these types of motions of the H atoms represent simple rotation of the whole molecule rather than vibrations within it. In case of more complex molecules, out-of-plane (γ) vibrational modes can be also present.
Lebanon Senior High School Lebanon Middle School Central Elementary School Hattie B. Stokes Elementary School Harney Elementary School Perry-Worth Elementary School The Lebanon Public Library was established as a Carnegie library with an initial grant of $15,000 in 1903.
=== Cytokines === Cytokines can manipulate neurotransmissions creating sickness behavior, characterized by malaise and fatigue. In animal models, IL-1b stimulates serotonin release and increases activity of GABA. Lipopolysaccharide challenges also inhibit activity of histaminergic and dopaminergic neurons.
== Pharmacology == Selank is a synthetic analogue of the immunomodulatory peptide tuftsin; as such, it mimics many of its effects. It has been shown to modulate the expression of Interleukin-6 (IL-6) and affect the balance of T helper cell cytokines. It has been shown in Wistar rats to influence the concentration of monoamine neurotransmitters and induce metabolism of serotonin. Selank has also been found to rapidly elevate the expression of brain-derived neurotrophic factor (BDNF) in the hippocampus of rats. Selank, as well as a related peptide drug, Semax, have been found to inhibit enzymes involved in the degradation of enkephalins and other endogenous regulatory peptides, and this action may be involved in their effects. It has also been found to affect the activity of carboxypeptidase H and phenylmethylsulfonylfluoride-inhibited carboxypeptidase in rat nervous system tissue. Selank has been found to produce antidepressant-like effects in animal models of depression and anhedonia.
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.
It is a synthetic REV-ERB agonist used mainly in preclinical research. It is not an approved medicine for human use.