This is a working overview of storage stability, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2026-02-12. 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.
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.
| 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 |
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.
Analytical methods for SR9009 typically rely on liquid chromatography coupled with tandem mass spectrometry. The technique can separate the parent compound from related substances and detect low concentrations in biological matrices. Urine and blood are common samples in anti-doping testing, while in vitro studies may use cell culture media. Rapid metabolism and low expected concentrations make method validation important for reliable identification. Exact metabolite patterns can vary by species and are not fully mapped.
Regulatory treatment of SR9009 reflects its investigational status. The compound has no approved human therapeutic indication, and sports authorities prohibit its use. It appears on anti-doping lists as a non-approved substance or metabolic modulator, depending on the list version. Products sold online as research chemicals are not quality-controlled medicines, so their identity and purity can differ from the label. Such products may also contain unlisted compounds, which complicates both testing and safety assessment.
Scientific discussion of SR9009 often separates animal evidence from human anecdote. Rodent studies provide controlled data on endurance, metabolism, and gene expression, but they use specific strains, doses, and treatment durations. Human reports are mostly uncontrolled and cannot establish cause and effect. Open questions include oral bioavailability, tissue distribution, metabolic stability, and long-term effects. Review articles generally call for more rigorous pharmacokinetic and safety research before any clinical use could be considered.
False positive readings can be due to various causes: liver disease, high rheumatoid factor, inflammation, malignancy, trauma, pregnancy, recent surgery as well as advanced age. False negative readings can occur if the sample is taken either too early after thrombus formation or if testing is delayed for several days. Additionally, the presence of anti-coagulation can render the test negative because it prevents thrombus extension. The anti-coagulation medications dabigatran and rivaroxaban decrease D-dimer levels but do not interfere with the D-dimer assay. False values may be obtained if the specimen collection tube is not sufficiently filled (false low value if underfilled and false high value if overfilled). This is due to the dilutional effect of the anticoagulant (the blood must be collected in a 9:1 blood to anticoagulant ratio). Likelihood ratios are derived from sensitivity and specificity to adjust pretest probability. Elevated plasma D-dimer levels following ICH serve as an independent risk factor for poor functional outcomes and mortality. In interpretation of the D-dimer, a value above 500 μg/L is considered abnormal. Since 2001 there have been numerous studies that show for patients over age 50, a value of (patient's age) × 10 μg/L may be abnormal; this has been validated in multiple different D-dimer assays. This has now been incorporated in clinical practice guidelines.
Since then the community has treated the ordinary fungal binomial as the correct name, whether the fungus is lichenised in nature or grown axenically in culture. While most authors still relied on a stand‑alone lichen framework, a few pioneers argued that lichens should be incorporated into the wider fungal system. John Axel Nannfeldt opened the door in 1932 by dividing the Ascomycota into "ascohymenial" and "ascolocular" lineages based on ascoma development and ascus wall structure, a paradigm that implicitly scattered lichen‑forming fungi across several ordinary ascomycete orders. Rolf Santesson took the first practical step in 1952: studying foliicolous (leaf-dwelling) lichens, he slotted them into Nannfeldt's ascomycete orders rather than the catch-all "Lichenes". Each genus went into an ordinary ascomycete order or family alongside non-lichenised fungi. Each genus thus sat alongside non‑lichenised relatives, showing that lichens required no special Linnaean compartment. This idea was bold for its time (challenging the status quo). Even by the mid-20th century, most lichen funga still treated "Lichenes" as a separate category — lichen specialists maintained their own journals, herbaria, and methods. True integration with mainstream fungal classification only gathered pace once modern molecular methods arrived. Even after it was superseded, Zahlbruckner's catalogue—tens of thousands of names—remained the baseline for later revisions. Within that framework, lichenologists were already aware of potential flaws.
Radionuclides are produced in stellar nucleosynthesis and supernova explosions along with stable nuclides. Most decay quickly, but some can be observed astronomically and can play a part in understanding astrophysical processes. Primordial radionuclides, such as uranium and thorium, still exist because their half-lives are so long (>100 million years) that the Earth's initial content has not yet completely decayed. Some radionuclides have half-lives so long (many times the age of the universe) that decay has only recently been detected, and for most practical purposes they can be considered stable, most notably bismuth-209: detection of this decay meant that bismuth was no longer considered stable. It is possible that decay may be observed in other nuclides now considered stable, adding to the list of primordial radionuclides. Secondary radionuclides are radiogenic isotopes derived from the decay of primordial radionuclides. They have shorter half-lives than primordial radionuclides. They arise in the decay chain of the primordial isotopes thorium-232, uranium-238, and uranium-235 - such as the natural isotopes of polonium and radium - some are also produced by natural fission and other nucleogenic processes. Cosmogenic isotopes, such as carbon-14, are present because they are continually being formed on Earth, typically in the atmosphere, due to the action of cosmic rays. Many of these radionuclides exist only in trace amounts in nature, including all cosmogenic nuclides.
Sources: en.wikipedia.org
Although the treaty was intended to save the union, hardliners feared that it would encourage some of the smaller republics to follow the lead of Lithuania and press for full independence. On 18 August, the hardliners took control of the government after confining Gorbachev in his Crimean dacha in order to stop him from returning to Moscow to sign the treaty. The August Coup collapsed in the face of overwhelming opposition not only from the smaller republics but from larger ones, especially Russia. The treaty was ultimately not signed, and the Belovezha Accords signed on 8 December 1991 by Russia, Ukraine, and Belarus marked the official dissolution of the Soviet Union, converting the republics into independent states. The leaders of the republics organized the Commonwealth of Independent States, an organization of 12 newly independent states, created to replace the Soviet Union. The Baltic states never joined the CIS. Georgia was not a member until 1993 and withdrew in 2008 following the Russo-Georgian War. Ukraine, which never formally became a member, ended its participation in CIS statutory bodies in 2018 due to the Russo-Ukrainian War.
The MNHN continued to flourish during the 19th century, particularly under the direction of chemist Michel Eugène Chevreul, His research with animal fats revolutionised the manufacture of soap and of candles and led to his isolation of the heptadecanoic (margaric), stearic, and oleic fatty acids. In the medical field, he was first to demonstrate that diabetics excrete glucose. and to isolate creatine. His theories of colour "provided the scientific basis for Impressionist and Neo-Impressionist painting." Henri Becquerel held the chair for Applied Physics at the MNHN (1892–1908). By wrapping uranium salts in photographic paper, he first demonstrated the radioactive properties of uranium. In 1903, he shared the Nobel Prize in Physics with Pierre Curie and Marie Curie for the discovery of spontaneous radioactivity. Four generations of Becquerels held this chairmanship, from 1838 to 1948. As its collections grew, the MNHN was enlarged, with the construction of a new gallery of zoology. it was begun in 1877 and completed in 1889, for the 100th anniversary of the French Revolution. A new Gallery of Palaeontology and Comparative Anatomy was opened in 1898. The cost of construction drained the museum budget and it began to run short of funds. Its emphasis on teaching brought it into conflict with the University of Paris, which had better political connections. It gradually scaled back its program of teaching and focused primarily on research and the museum collections.
=== Microsoft === While at Harvard, Newell visited his brother at Microsoft, which was not yet a major software developer. At the suggestion of the Microsoft executive Steve Ballmer, he dropped out of Harvard and began working at Microsoft. Newell said later that Microsoft was the best place in the world to learn to program at the time. Newell spent 13 years at Microsoft as a programmer and technical executive, and produced the first three releases of the Windows operating system. In late 1995, Doom, a 1993 first-person shooter game developed by id Software, was estimated to be installed on more computers worldwide than Microsoft's new operating system, Windows 95. Newell said: "[id] ... didn't even distribute through retail, it distributed through bulletin boards and other pre-internet mechanisms. To me, that was a lightning bolt. Microsoft was hiring 500-people sales teams and this entire company was 12 people, yet it had created the most widely distributed software in the world. There was a sea change coming." At Microsoft, Newell led development on a port of Doom for Windows 95, which is credited with helping make Windows a viable game platform.
=== European Union === The European Union-funded project SYNBIOSAFE has issued reports on how to manage synthetic biology. A 2007 paper identified key issues in safety, security, ethics, and the science-society interface, which the project defined as public education and ongoing dialogue among scientists, businesses, government and ethicists. The key security issues that SYNBIOSAFE identified involved engaging companies that sell synthetic DNA and the biohacking community of amateur biologists. Key ethical issues concerned the creation of new life forms. A subsequent report focused on biosecurity, especially the so-called dual-use challenge. For example, while synthetic biology may lead to more efficient production of medical treatments, it may also lead to synthesis or modification of harmful pathogens (e.g., smallpox). The biohacking community remains a source of special concern, as the distributed and diffuse nature of open-source biotechnology makes it difficult to track, regulate or mitigate potential concerns over biosafety and biosecurity. COSY, another European initiative, focuses on public perception and communication. To better communicate synthetic biology and its societal ramifications to a broader public, COSY and SYNBIOSAFE published SYNBIOSAFE, a 38-minute documentary film, in October 2009. The International Association Synthetic Biology has proposed self-regulation. This proposes specific measures that the synthetic biology industry, especially DNA synthesis companies, should implement.
Sources: en.wikipedia.org
== Discovery == Identified as a marker of epithelial differentiation upon its discovery in the 1990s, galectin-7 was first characterized for its increased expression in keratinocytes following UVB irradiation. Only later was its dual role in cancers recognized.
Whether or not these largely theoretical relationships are causal in humans at realistic exposure levels remains to be seen. Third-hand smoke has also been tested in various cell assays. THS exposure by cells has been shown to lead to the observation of DNA strand breaks, inhibition of proliferation, and cell death. Acrolein has shown to be a particularly potent third-hand smoke gas. A study led by Ashley Merianos, a tobacco researcher at the University of Cincinnati, revealed that in homes where children live, surfaces were contaminated with nicotine and the tobacco-specific carcinogen NNK. This was observed even in homes with voluntary indoor smoking bans, highlighting the persistent nature of THS pollutants. The study revealed higher levels of NNK and nicotine in lower-income households and homes that do not ban indoor smoking. Residential field studies have found that third-hand smoke accumulates in smokers' homes and remains even after the smokers move out, including after long periods of vacancy and standard cleaning. Nonsmoking adults and children who move into such homes have been observed to have higher nicotine levels on their hands and higher urinary cotinine than residents of homes with no history of smoking, indicating continued exposure to THS from contaminated dust, air and surfaces.
Mad honey intoxication is a result of eating honey containing grayanotoxins. Honey produced from flowers of rhododendrons, mountain laurels, sheep laurel, and azaleas may cause honey intoxication. Symptoms include dizziness, weakness, excessive perspiration, nausea, and vomiting. Less commonly, low blood pressure, shock, heart rhythm irregularities, and convulsions may occur, with rare cases resulting in death. According to the FDA, honey intoxication is more likely when using "natural" unprocessed honey from farmers who may have a small number of hives because commercial processing, which pools of honey from numerous sources, dilutes the toxins. Toxic honey may also result when bees are proximate to tutu bushes (Coriaria arborea) and the vine hopper insect (Scolypopa australis). Both are found throughout New Zealand. Bees gather honeydew produced by the vine hopper insects feeding on the tutu plant. This introduces the poison tutin into honey. Only a few areas in New Zealand (the Coromandel Peninsula, Eastern Bay of Plenty Region and the Marlborough Sounds) frequently produce toxic honey. Symptoms of tutin poisoning include vomiting, delirium, giddiness, increased excitability, stupor, coma, and violent convulsions. To reduce the risk of tutin poisoning, humans should not eat honey taken from feral hives in the risk areas of New Zealand. Since December 2001, New Zealand beekeepers have been required to reduce the risk of producing toxic honey by closely monitoring tutu, vine hopper, and foraging conditions within 3 km (2 mi) of their apiary.
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.
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.