Everything below concerns ACTH fragment. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2025-11-17. Where a claim depends on a specific study, the study is described rather than over-claimed.
Semax is a synthetic heptapeptide with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. It corresponds to the ACTH(4-7) fragment extended at the C-terminus by a Pro-Gly-Pro tripeptide, an addition intended to slow enzymatic breakdown. The molecular formula is C37H51N9O10S and the molecular mass is approximately 814 daltons. In the literature it is often described as an ACTH(4-10) analog, although that label reflects a naming convention as much as a precise structural relationship. The compound was developed in Russia and remains most closely associated with that research tradition.
Laboratory descriptions of the material are consistent across suppliers. It appears as a white to off-white lyophilized powder that dissolves readily in water and in polar organic solvents such as dimethyl sulfoxide. Aqueous solutions are clear and colorless at low concentrations. Because the peptide contains methionine, oxidation at the sulfur atom is a recognized degradation pathway, and handling notes usually call for protected, desiccated storage. Reported purity for research-grade lots is generally above 95 percent as measured by reversed-phase high-performance liquid chromatography.
当时的短肽研究普遍关注能否穿越血脑屏障、在低剂量下产生中枢效应，Semax 属于这一路线。鼻内给药是其主要使用方式，俄语文献报道的适应症涵盖缺血性卒中、短暂性脑缺血发作、认知功能减退以及视神经病变。这些研究大多发表在当地期刊上，样本规模与终点设置同西方试验惯例存在差异，国际同行对其临床证据的强度看法不一。
各国监管态度分化明显。俄罗斯按处方药管理，部分东欧国家留有使用记录；欧盟与美国未批准其作为药物上市，市面流通品通常标注为研究用化学品。身份差异意味着标示含量、纯度与无菌性缺少统一核查。体育领域还牵涉反兴奋剂名录，跨境携带则受目的地药品法规约束。
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C37H51N9O10S | Contains one methionine sulfur atom |
| Molecular mass | Approximately 814 Da | Consistent with a seven-residue peptide |
| Appearance | White to off-white powder | Typical lyophilized form |
| Solubility | Freely soluble in water | Also soluble in dimethyl sulfoxide |
| Typical storage | -20 °C, desiccated | Limits methionine oxidation |
Regulatory status differs sharply between jurisdictions. In Russia the peptide is registered as a prescription nasal preparation, while agencies such as the United States Food and Drug Administration have not approved it for any indication. Products sold elsewhere are typically labeled for laboratory research only, and such labels shift responsibility for safe handling to the purchaser. Because the same name covers pharmaceutical-grade nasal drops and bulk research powder, identity and purity documentation becomes the main practical concern when comparing sources.
Semax is a synthetic seven-amino-acid peptide whose sequence extends the ACTH(4-10) fragment with a C-terminal proline-glycine-proline tripeptide. The commonly cited sequence is Met-Glu-His-Phe-Pro-Gly-Pro, giving a molecular formula near C37H51N9O10S and a molecular weight close to 813.9 g/mol. It belongs to the broader class of synthetic ACTH fragments studied for central nervous system effects rather than for adrenal steroid stimulation. In practice the material appears as a lyophilized white powder for laboratory work or as a dilute saline solution in clinical settings.
Development is attributed to researchers at the Institute of Molecular Genetics in Moscow during the early 1980s, building on earlier Soviet work with ACTH fragments. Russian regulatory approval followed for intranasal use, and the compound has remained commercially available there for decades. Most published human data originate from Russian and, later, some Eastern European clinical reports, which are not always accessible in English translation. Outside that region the material is generally handled as a research chemical rather than a licensed medicine.
Published research on this peptide originates mainly from Russian laboratories, and the wider international literature is comparatively thin. Studies have used rodent models of stroke, hypoxia, and memory tasks, with a smaller number of human trials reported. Reported outcomes include changes in attention and memory measures, along with effects on neurotrophic factor expression in some experiments. Small sample sizes, inconsistent dosing protocols, and limited independent replication are widely noted limitations, so the strength of the clinical evidence remains an open question.
Semax is a synthetic heptapeptide whose sequence is Met-Glu-His-Phe-Pro-Gly-Pro. The first four residues correspond to the ACTH(4-10) fragment, while the terminal Pro-Gly-Pro extension was added to improve metabolic stability. Its molecular formula is C37H51N9O10S and its monoisotopic mass is approximately 813.9 Da. The compound is classified as a peptide research chemical and as a registered pharmaceutical product in Russia, but it does not hold marketing approval in the European Union or the United States. Naming conventions vary across supplier catalogs.
Simcyp Limited was acquired March 13, 2012, by Certara inc. Simcyp Limited is a research-based company which provides modelling and simulation software to the pharmaceutical industry for use during drug development. Simcyp is based in Sheffield, UK. Simcyp's Simulators allow in silico prediction of drug absorption, distribution, metabolism excretion (ADME) and potential drug-drug interactions.
=== Others === Bile overload is very rare, and not a health threat. Problems as simple as serious diarrhea may cause blood in one's stool. Black stools caused by the presence of blood usually indicate a problem in the intestines (the black color is a sign of digested blood), whereas red streaks of blood in stool usually are caused by bleeding in the rectum or anus.
== Monomer preparation == To prepare and oligopeptide with both a terminal azide and terminal alkyne two modifications must be carried out. The first is the amidation of the oligopeptide's C-terminus by propargylamine. This would done with all other reaction groups protected and with the C-terminus activated.
Soft tissue is tissue in the body that connects and surrounds or supports internal organs and bones, and includes muscle, tendons, ligaments, fat, fibrous tissue, lymph and blood vessels, fasciae, and synovial membranes. Soft tissue is not hardened by the processes of ossification or calcification such as bones and teeth. It is sometimes defined by what it is not – such as "nonepithelial, extraskeletal mesenchyme exclusive of the reticuloendothelial system and glia".
Sources: en.wikipedia.org
After the death of Ferdinand I in 1825 and the brief reign of his son Francis I, 20-year-old Ferdinand II (son of Francis I) ascended the throne in 1830. He enacted partial economic and administrative reforms:
== Services == Juniper provides weight-management services via telehealth. Their programs are delivered through an online health assessment followed by a clinician review and consultation. If eligible, patients may be prescribed weight-loss medications approved by the Therapeutic Goods Administration (TGA) or other regulators. This could include liraglutide (Saxenda), semaglutide (Wegovy or Ozempic) and tirzepatide (Mounjaro or Zepbound). The medications are supplied via partner pharmacies. In Australia, Juniper does not publicly advertise any medicines by name prior to consultation, due to advertising restrictions.
== Signalling == Zinc has been recognized as a messenger, able to activate signalling pathways. Many of these pathways provide the driving force in aberrant cancer growth. They can be targeted through ZIP transporters.
== Function == As well as C. maenas, CCAP has cardioacceleratory properties in Manduca sexta and Drosophila melanogaster; it is a highly conserved protein found in species as diverse as moths and fruit flies in addition to the crustacean it was originally identified in. Under specific conditions, CCAP has also been shown to induce cardiac reversal in M. sexta and D. melanogaster. Since CCAP was first identified and its possible role suggested, it has been proven it serves many other functions. It regulates release of adipokinetic hormone during sustained flight in L. migratoria. It is also important in metabolism and digestion in other species; CCAP is involved as a hormone in the cockroach Periplaneta americana by upregulating digestive hormones after the insect has fed on nutritional matter. In the crab Cancer borealis CCAP controls passage of food through the foregut by modulating the stomatogastric ganglion's pyloric rhythm. This suggests CCAP is involved primarily in movement of food along the gut, facilitating digestion by secretion of digestive hormones and increasing flow of blood. The effects of CCAP on the reproductive organs of females of the species L. migratoria have also been studied. The peptide stimulates the contraction of the oviducts and spermatheca. There is no CCAP or CCAP-like immunoreactivity shown in the oviduct or the nerves innervating the oviduct so it is probable that CCAP acts as a neurohormone to perform these functions. CCAP is one of several peptides and hormones to be involved in the moulting process of crustaceans and insects.
Another promising treatment is antisense-mediated therapy, specifically using allele-selective LNA gapmers. Allele-specific RNA interference targets mutated mRNA for degradation while preserving normal ACVR1 gene expression. This approach targets the mutated ACVR1 gene, which causes heterotopic ossification by responding aberrantly to activin A. In recent studies, LNA gapmers effectively reduced the expression of the pathogenic ACVR1R206H transcript while sparing the wild-type ACVR1 gene, thus selectively suppressing osteogenic differentiation associated with FOP. This novel antisense approach offers potential for therapeutic application in FOP, representing a breakthrough in targeted genetic treatment for this and potentially other autosomal dominant disorders. Further investigation into the mechanisms of heterotopic bone formation in FOP could aid in the development of treatments for other disorders involving extra-skeletal bone formation. Fibro-adipogenic progenitors (FAPs) may be the disease-causing cell type responsible for activin A dependent ectopic bone formation in both the muscles and tendons of mice bearing the FOP causing ACVR1(R206H) mutation. In December 2019, Ipsen issued a partial clinical hold for people under the age of 14, due to reports of early fusion of growth plates. As of 2021, a potential therapeutic candidate, saracatinib, was in phase III clinical trials as a potent heterotopic ossification inhibitor in wild-type and ACVR1 mutant mice.
Sources: en.wikipedia.org
===== Organic oxidation methods for TOC analysis ===== Oxidation of organics to CO2 is most commonly achieved in liquid solutions by the creation of the highly oxidizing chemical species, the hydroxyl radical (OH•). Organic oxidation in a combustion environment involves the creation of other energized molecular oxygen species. For the typical TOC levels in UPW systems most methods utilize hydroxyl radicals in the liquid phase. There are multiple methods to create sufficient concentrations of hydroxyl radicals needed to completely oxidize the organics in water to CO2, each method being appropriate for different water purity levels. For typical raw waters feeding into the front end of an UPW purification system the raw water can contain TOC levels between 0.7 mg/L to 15 mg/L and require a robust oxidation method that can ensure there is enough oxygen available to completely convert all the carbon atoms in the organic molecules into CO2. Robust oxidation methods that supply sufficient oxygen include the following methods; Ultraviolet light (UV) & persulfate, heated persulfate, combustion, and super critical oxidation. Typical equations showing persulfate generation of hydroxyl radicals follows. S2O2−8 + hν (254 nm) → 2 SO−4• and SO−4 • + H2O → HSO−4 + OH • When the organic concentration is less than 1 mg/L as TOC and the water is saturated with oxygen UV light is sufficient to oxidize the organics to CO2, this is a simpler oxidation method.
The in-gel digestion step is a part of the sample preparation for the mass spectrometric identification of proteins in course of proteomic analysis. The method was introduced in 1992 by Rosenfeld. Innumerable modifications and improvements in the basic elements of the procedure remain. The in-gel digestion step primarily comprises the four steps; destaining, reduction and alkylation (R&A) of the cysteines in the protein, proteolytic cleavage of the protein and extraction of the generated peptides.
Forensic toxicology is the study of the pharmacodynamics, or what a substance does to the body, and pharmacokinetics, or what the body does to the substance. To accurately determine the effect a particular drug has on the human body, forensic toxicologists must be aware of various levels of drug tolerance that an individual can build up as well as the therapeutic index for various pharmaceuticals. Toxicologists are tasked with determining whether any toxin found in a body was the cause of or contributed to an incident, or whether it was at too low a level to have had an effect. While the determination of the specific toxin can be time-consuming due to the number of different substances that can cause injury or death, certain clues can narrow down the possibilities. For example, carbon monoxide poisoning would result in bright red blood while death from hydrogen sulfide poisoning would cause the brain to have a green hue. Toxicologists are also aware of the different metabolites that a specific drug could break down into inside the body. For example, a toxicologist can confirm that a person took heroin by the presence in a sample of 6-monoacetylmorphine, which only comes from the breakdown of heroin. The constant creation of new drugs, both legal and illicit, forces toxicologists to keep themselves apprised of new research and methods to test for these novel substances. The stream of new formulations means that a negative test result does not necessarily rule out drugs. To avoid detection, illicit drug manufacturers frequently change the chemicals' structure slightly.
Gemini 4's crew originally intended to call their spacecraft American Eagle, but this was rejected after NASA management issued a memo saying that they did not want a repeat performance of the previous mission, on which Gus Grissom had named his spacecraft Molly Brown. The callsign for the mission became simply Gemini 4. There was no patch flown on the crew's suits, although the one shown here was created after the mission and is on display in McDivitt's museum. Since McDivitt and White were prohibited from naming their spacecraft, they decided to put the American flag on their suits, the first astronauts to do so, although Soviet crews wore the Cyrillic "СССР" on their spacesuit helmets. Previous astronauts had only had the NASA insignia and a strip with their name on their suits.
== Personal life == On July 20, 1957, Sunny married Prince Alfred Eduard Friedrich Vincenz Martin Maria Auersperg. He came from a very distinguished Austrian princely family that once ruled over the Principality of Auersperg, but due to the collapse of the Austrian Empire, his family became relatively impoverished. Sunny and Alfred met while he was her tennis instructor in a Swiss resort. They had two children together:
Sources: en.wikipedia.org
It is registered as a pharmaceutical product in Russia, where it is typically supplied as a nasal solution. In most other countries it is not an approved drug and is traded as a research chemical instead. Approval status depends entirely on the jurisdiction involved.
Most published work uses intranasal administration, matching the route of the registered Russian formulation. Some animal experiments use intravenous or intraperitoneal injection. The route matters because the intact peptide is cleared rapidly from blood, so exposure differs between methods.
A purity value describes the share of the powder accounted for by the target peptide, usually by high-performance liquid chromatography. It does not confirm that the sequence is correct, which requires mass spectrometry or amino acid analysis. Purity and identity are separate checks.
不存在。它是依据 ACTH 的一段序列人工设计的分子，天然蛋白质中找不到与之完全相同的七肽。名称属于研究代号，而非天然物质名。