Semax raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
This page was last updated on 2026-04-05 and is reviewed periodically as new material appears.
The compound was developed in the 1980s at the Institute of Molecular Genetics in Moscow, where it emerged from research on short ACTH fragments and their effects on the central nervous system. Russian pharmaceutical listings describe it as a nootropic and neuroprotective agent, most often formulated as nasal drops. It is not a marketed medicine in the United States or the European Union, and no pharmacopoeial monograph covers it. Consequently, most published clinical experience with the substance originates from a small number of research centres, mainly in Russia and neighbouring countries.
Pharmacological accounts link semax to melanocortin signalling and to modulation of neurotrophic factor expression, particularly brain-derived neurotrophic factor and nerve growth factor. Much of this evidence comes from rodent studies using intranasal delivery, a route chosen because it allows peptides to reach the central nervous system with limited systemic exposure. Whether the same mechanisms operate in humans at comparable magnitude remains an open question. The precise receptor or receptors responsible for the reported behavioural and neuroprotective effects have not been conclusively identified.
Clinical reports describe use in ischaemic stroke, transient ischaemic attack, optic nerve conditions, and cognitive complaints, but most of these studies are small and were conducted in a single region. Systematic reviews have generally described the evidence base as limited in size and variable in methodological quality. Randomised controlled data suitable for international regulatory assessment are scarce. As a result, major treatment guidelines outside Russia do not include the peptide, and interest in it remains largely research-driven rather than routine clinical.
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.
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.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C37H51N9O10S | Free acid form of the heptapeptide; depends on terminal groups |
| Molecular mass | About 813.9 g/mol | Average mass used for mass spectrometry confirmation |
| Appearance | White to off-white solid | Supplied as a lyophilised powder; hygroscopic |
| Solubility class | Freely soluble in aqueous media | Water, saline, and phosphate buffers; limited organic solubility |
| Typical storage temperature | -20 degrees Celsius | Long term and dry; short working periods may use 2 to 8 degrees Celsius |
Laboratory work points toward modulation of neurotrophic signaling, particularly expression of brain-derived neurotrophic factor and nerve growth factor in hippocampal tissue. Studies also describe effects on monoamine turnover, inflammatory mediators, and oxidative markers. These observations come mainly from animal models and cultured cells, so the causal chain in humans is not firmly established. Whether the reported molecular changes translate into measurable clinical benefit is an open question. Reviews generally present the mechanism as plausible rather than demonstrated.
Clinical evidence consists largely of small trials with modest sample sizes, often without independent replication. Reported endpoints include cognitive scores, recovery after stroke, and visual function, but study designs vary widely and few trials meet contemporary reporting standards. Systematic reviewers have noted a high risk of bias in several of these reports. No large multicenter trial conducted outside Russia has been published. The compound is therefore best described as investigational in most jurisdictions, with its clinical role still unresolved.
Semax is a synthetic heptapeptide with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. Its chain combines the first seven residues of corticotropin with a C-terminal proline-glycine-proline extension, a modification intended to slow enzymatic breakdown. The free peptide has a molecular mass near 813.9 daltons. It belongs to the class of ACTH-derived fragments studied for central nervous system activity rather than for adrenal steroid stimulation. This structural relationship to a natural hormone fragment is the usual starting point for describing the compound in the literature.
Semax is a synthetic heptapeptide developed in the Soviet Union during the 1980s by researchers at the Institute of Molecular Genetics in Moscow. It was designed as a truncated analog of adrenocorticotropic hormone, retaining only the fragment spanning residues four through ten. Investigators sought a peptide that would preserve the cognitive effects associated with ACTH while eliminating the hormonal stimulation of the adrenal cortex. The compound entered clinical use in Russia during the following decade.
Russian regulatory authorities approved the peptide for nasal administration, and it remains listed in the national pharmacopoeia under several trade names. Documented indications include acute ischemic stroke, transient ischemic attacks, traumatic brain injury, and certain ophthalmological and neurological conditions. Physicians also prescribe it for cognitive complaints in older patients, although the evidence base for that use is thinner. Outside Russia and a few neighboring states, the substance is not an approved medicine and is sold instead as a research chemical.
The proposed mechanism centres on neurotrophic signalling rather than direct receptor activation. Semax is reported to increase expression of brain-derived neurotrophic factor and nerve growth factor in several brain regions, and to shift the balance between excitatory and inhibitory neurotransmitter systems. Interaction with melanocortin receptors has been suggested because of the parent ACTH fragment. Many of these findings come from rodent studies, and the extent to which they translate to human physiology remains an open question.
Scientific literature on semax is unevenly distributed. A substantial share of published work originates from a small number of laboratories in Russia, while independent replication elsewhere is limited. Human data consist mostly of small trials with short follow-up, and several reported outcomes rely on subjective rating scales. Questions about how much intact peptide reaches the central nervous system after nasal administration, and how long it persists there, are still unresolved. The compound is best described as an active research subject rather than a settled pharmacological agent.
=== Higher-calorie variants === In extreme cold temperatures, the packaged wet food in MREs can freeze solid, rendering the food inedible and the heating packet insufficient. The Meal, Cold Weather (MCW) provides a ration similar to the MRE designed for lower temperatures than the MRE can withstand. Clad in white packaging, it offers a freeze-dried entree designed to be eaten with heated water, the same side ingredients as the standard MRE, and additional drink mixes to encourage additional hydration. The caloric and fat content of the meals is also increased. The MCW replaced the Ration, Cold Weather (RCW). The Meal, Long Range Patrol (LRP) is essentially the same as the MCW, but with different accessory packs. The MLRP is designed for troops who may receive limited or no supply, and weight of the ration is critical. The similar First Strike Ration is along the same lines, but requires no preparation and may be eaten on the go.
==== MeSH D08.211.211 – coenzyme a ==== MeSH D08.211.211.300 – acyl coenzyme a MeSH D08.211.211.300.075 – acetyl coenzyme a MeSH D08.211.211.300.500 – malonyl coenzyme a MeSH D08.211.211.300.700 – palmitoyl coenzyme a
=== Charles Hanani === Charles Hanani (Adam Levy) is Yasmin's father, and the wealthy CEO of the Hanani Publishing company. Charles is a serial philanderer, long divorced from Yasmin's mother Azar. He has a strained relationship with Yasmin, whom he treats like a child, and who carries trauma from growing up around her father's sexually inappropriate behavior. Charles reenters Yasmin’s life in series 2 when he arrives in London on business. Hoping to transition into Pierpoint’s private wealth management division, Yasmin brings him on as a client, only to learn that much of his fortune has been drained by nondisclosure settlements with women he had affairs with—including her former nanny, leading Yasmin to realize he likely groomed her. When confronted, Charles attacks Yasmin for condemning him while benefiting from his wealth and cuts her off financially. In series 3, Yasmin joins Charles on his yacht in Mallorca and catches him performing oral sex on a pregnant employee. Amid revelations that he is being sued by his own company for historic embezzlement, the two engage in a vicious confrontation in which Yasmin accuses him of sexualizing her throughout her life. A drunken Charles jumps overboard after Yasmin wishes him dead, and she makes no attempt to save him; Harper helps cover up her involvement. After Charles’ body is recovered, Hanani Publishing scapegoats Yasmin to deflect from its own complicity in silencing his victims, prompting her to sue the company.
Sources: en.wikipedia.org
=== Early Exploration and late-18th Century Politics === By the early 1700s, traders from South Carolina were visiting the Overhill towns regularly, and following the discovery of Cumberland Gap in 1748, long hunters from Virginia began pouring into the Tennessee Valley. At the outbreak of the French and Indian War in 1754, the Cherokee supported the British, who in return constructed Fort Loudoun in 1756 to protect the Overhill towns from the French and their allies. During the Anglo-Cherokee War, however, the Cherokee attacked the fort and killed its occupants in 1760. A peace expedition to the Overhill towns led by Henry Timberlake passed along the river through what is now Knoxville in December 1761. The Cherokee supported the British during the Revolutionary War, and after the end of the war, North Carolina, which considered the Tennessee Valley part of its territory, deemed Cherokee claims to the region void. North Carolina made plans to cede its Trans-Appalachian territory to the federal government, but decided to open up the lands to settlement first. In 1783, land speculator William Blount and his brother, John Gray Blount, convinced North Carolina to pass a law offering lands in the Tennessee Valley for sale. Later that year, an expedition consisting of James White (1747–1820), James Connor, Robert Love, and Francis Alexander Ramsey, explored the Upper Tennessee Valley, and discovered the future site of Knoxville. Taking advantage of Blount's land-grab act, White took out a claim for the site shortly afterward.
Endogenous bioelectric signals are produced in cells by the cumulative action of ion channels, pumps, and transporters. In non-excitable cells, the resting potential across the plasma membrane (Vmem) of individual cells propagate across distances via electrical synapses known as gap junctions (conductors), which allow cells to share their resting potential with neighbors. Aligned and stacked cells (such as in epithelia) generate transepithelial potentials (such as batteries in series) and electric fields, which likewise propagate across tissues. Tight junctions (resistors) efficiently mitigate the paracellular ion diffusion and leakage, precluding the voltage short circuit. Together, these voltages and electric fields form rich and dynamic and patterns inside living bodies that demarcate anatomical features, thus acting like blueprints for gene expression and morphogenesis in some instances. More than correlations, these bioelectrical distributions are dynamic, evolving with time and with the microenvironment and even long-distant conditions to serve as instructive influences over cell behavior and large-scale patterning during embryogenesis, regeneration, and cancer suppression. Bioelectric control mechanisms are an important emerging target for advances in regenerative medicine, birth defects, cancer, and synthetic bioengineering.
Shriram Gadhve of All India Vegetable Growers Association (AIVGA) claims his organisation supports retail reform. He claimed that currently, it is the middlemen commission agents who benefit at the cost of farmers. He urged that the retail reform must focus on rural areas and that farmers receive benefits. Gadhve claimed, "A better cold storage would help since this could help prevent the existing loss of 34% of fruits and vegetables due to inefficient systems in place." AIVGA operates in nine states including Maharashtra, Andhra Pradesh, West Bengal, Bihar, Chhattisgarh, Punjab and Haryana with 2,200 farmer outfits as its members. Bharat Krishak Samaj, a farmer association with more than 75,000 members says it supports retail reform. Ajay Vir Jakhar, the chairman of Bharat Krishak Samaj, claimed a monopoly exists between the private guilds of middlemen, commission agents at the sabzi mandis (India's wholesale markets for vegetables and farm produce) and the small shopkeepers in the unorganised retail market. Given the perishable nature of food like fruit and vegetables, without the option of safe and reliable cold storage, the farmer is compelled to sell his crop at whatever price he can get. He cannot wait for a better price and is thus exploited by the current monopoly of middlemen. Jakhar asked that the government make it mandatory for organised retailers to buy 75% of their produce directly from farmers, bypassing the middlemen monopoly and India's sabzi mandi auction system. Consortium of Indian Farmers Associations (CIFA) announced its support for retail reform.
Sources: en.wikipedia.org
A key advantage of chemiluminescence-based electronic devices is their high reliability and resistance to interference from substances such as perfumes, dirt, and human sweat, as well as their ability to operate effectively under challenging environmental conditions, including variations in temperature and humidity. Therefore they are very capable in the field. These devices does not uses radioactive ionizing source. These features are enabled by IRSSIL technology developed by RS DYNAMICS, powering the compact yet fast and capable miniEXPLONIX Pro detector, as well as the advanced EXPLONIX 2 analyzer.
October 5–10, 1908 - The rapidly growing, global industry and scientific quest for absolute zero led to the 1st International Congress of Refrigeration held in Paris, France, at the Paris-Sorbonne University, which welcomed over 5,000 participants. January 25, 1909 - From this first Congress, the International Association of Refrigeration was born, formed by delegates from 35 countries. June 21, 1920 - The association was reorganised and officially titled as the International Institute of Refrigeration – IIR (Institut International du Froid – IIF, in French). IIR's status as an international organisation was defined by an International Agreement signed on December 1, 1954, and General Regulations for the Application of the International Agreements signed on November 20, 1956. Since then, the IIR has been operating at its headquarters based in Paris and is now an international organisation for expertise on refrigeration. The institute has continued to run the International Congress of Refrigeration every four years since its inauguration and has now expanded its event portfolio to ten conference series covering a wide variety of refrigeration topics. Working alongside governments, today the IIR remains committed to promoting knowledge on refrigeration for sustainable development, and continues to provide key services to disseminate information on associated technologies to all stakeholders (companies, universities, professionals, etc.).
=== The University of California === In 2018, King published the book, The University of California: Creating, Nurturing, and Maintaining Academic Quality in a Public University Setting. The book examines in depth the factors that have contributed to the academic success of University of California. He has made the book freely available through eScholarship.
Sources: en.wikipedia.org
It is described as a synthetic analogue of the ACTH(4–10) fragment, a short segment of adrenocorticotropic hormone. Its sequence differs from that fragment and includes two proline residues, which influence stability and behaviour in solution.
It appears in Russian pharmaceutical listings as a nasal formulation, but it is not an authorised medicine in the United States or the European Union. Outside those markets it is normally encountered as a research chemical rather than a prescription product.
Laboratory and animal work points to melanocortin signalling and changes in neurotrophic factor levels, especially brain-derived neurotrophic factor. The exact receptor targets and the degree to which these findings transfer to humans are still unresolved.
It is a short synthetic peptide built from seven amino acids: methionine, glutamic acid, histidine, phenylalanine and three prolines. The sequence derives from the 4-10 fragment of adrenocorticotropic hormone with an added proline-glycine-proline tail. No plant or animal extract is involved; the material is produced by solid-phase peptide synthesis.