heptapeptide is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Last reviewed on 2026-02-20. Where a claim depends on a specific study, the study is described rather than over-claimed.
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。
Semax is a synthetic heptapeptide with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. It is described in the literature as an analogue of the ACTH(4–10) fragment, a short N-terminal portion of adrenocorticotropic hormone that retains some neurotropic activity without the full hormonal effects of the parent peptide. The molecule carries a methionine residue at the N-terminus and two proline residues near the C-terminus, features that shape both its interactions with receptor systems and its chemical stability. The free peptide corresponds to the formula C37H51N9O10S and a molecular mass near 813.9 Da.
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.
| Property | Value | Notes |
|---|---|---|
| 结构类别 | 线性合成七肽 | 无环化结构，不含二硫键 |
| 氨基酸序列 | Met-Glu-His-Phe-Pro-Gly-Pro | N 端为甲硫氨酸 |
| 分子量 | 约 814 Da | 游离碱形式的计算值 |
| 外观 | 白色至类白色粉末 | 具吸湿性 |
| 溶解性 | 易溶于水 | 亦可溶于甲醇等极性溶剂 |
Before, I had avoided them like the plague, especially because of what they said about General Sharon and about Nicaragua. But nobody could say they were interested in oil in the Balkans, or in strategic needs, and the people who tried to say that – like Chomsky – looked ridiculous. So now I was interested. Hitchens argued that the choice in Yugoslavia was between a multi-ethnic plural democracy led by Muslim president Alija Izetbegović in Bosnia and a fascistic, nationalistically inspired ethnically cleansed state driven by Serbian leader Slobodan Milošević. He called Milošević a fascist and a "national-socialist", and condemned his war crimes in the Yugoslav Wars. In God Is Not Great, he wrote about Christian Orthodox Serbian and Roman Catholic Croatian nationalism- and religion-inspired crimes against the Muslim Bosniaks, at the hands of proponents of Serbian Chetnik revivalism, those in support of Croatian Ustashe revivalism and those for a Greater Serbia, during this period which are "often forgotten".
==== Enzymatic ==== The enzymes traditionally used to digest heparin or HS are naturally produced by the soil bacterium Pedobacter heparinus (formerly named Flavobacterium heparinum). This bacterium is capable of using either heparin or HS as its sole carbon and nitrogen source. To do so, it produces a range of enzymes such as lyases, glucuronidases, sulfoesterases, and sulfamidases. The lyases have mainly been used in heparin/HS studies. The bacterium produces three lyases, heparinases I (EC 4.2.2.7), II (no EC number assigned) and III (EC 4.2.2.8) and each has distinct substrate specificities as detailed below.
== History == CPC Scientific Group was founded in 2001, and the US company established in 2005 by Shawn Lee, Ph.D., and began by supplying research-grade custom peptides, catalog peptides, and Fmoc-protected amino acids. In 2006, the company opened a GMP (Good Manufacturing Practice) facility in Hangzhou, China to support the production of peptides for clinical use. The Hangzhou site underwent its first inspection by the U.S. Food and Drug Administration (FDA) in 2011, after which CPC Scientific began supplying pharmaceutical-grade peptides to clients in the United States. On March 17, 2016, the company passed a fourth FDA inspection. In 2024, the company completed a fifth U.S. FDA inspection and was also inspected by Australia’s Therapeutic Goods Administration (TGA). In 2025, CPC Scientific obtained ISO 22716:2007 Cosmetic GMP certification for the manufacture of peptide ingredients for cosmetic applications. CPC Scientific is part of Medtide Inc., which was listed on the Main Board of the Hong Kong Stock Exchange on June 30, 2025 (Stock Code: 03880).
Sources: en.wikipedia.org
Big Drawer II (ビグドローワー2, Bigu Dorōwā Tsū): A chest-of-drawers-themed Super Kaijuki that he uses in his smear campaign against the Dekarangers before it is destroyed by Deka Base Robo. Abtrex (アブトレックス, Abutorekkusu): Abrella's personal Kaijuki that can assume the Abtrailer (アブトレーラー, Abutorērā) drill-vehicle mode. He tasks the Alienizer Angorl with using it to attack the Deka Base and damage Dekaranger Robo before the Kaijuki is destroyed by Deka Bike Robo and the Deka Wing Cannon. During the events of the crossover film Mahō Sentai Magiranger vs. Dekaranger, Agent X pilots the succeeding model, Abotrex (アボトレックス, Abotorekkusu), before it is blasted into space by Magi Legend and the Deka Wing Cannon and destroyed by Magi King, Dekaranger Robo, Travelion, and Deka Bike Robo. Abrella is voiced by Ryūsei Nakao (中尾 隆聖, Nakao Ryūsei).
TikTok is a Chinese social networking service and short-form online video platform. It hosts user-submitted videos, which range in duration from three seconds to 60 minutes. It can be accessed through a mobile app or through its website. Since its launch, TikTok has become one of the world's most popular social media platforms, using recommendation algorithms to connect content creators and influencers with new audiences. In April 2020, TikTok surpassed two billion mobile downloads worldwide. The popularity of TikTok has allowed viral trends in food, fashion, and music to take off and increase the platform's cultural impact worldwide. TikTok has come under scrutiny due to data privacy violations, mental health concerns, misinformation, offensive content, addictive algorithm, its role during the Gaza war, and, following its 2026 divestiture in the U.S., alleged censorship of criticism of Donald Trump and discussions of Jeffrey Epstein. While TikTok remains accessible to users in most countries, a minority of countries (including India and Afghanistan) have implemented full or partial bans. Many other countries limit TikTok's use on government-issued devices for security or privacy reasons.
=== Category:EC 1.1 (act on the CH-OH group of donors) === Category:EC 1.1.1 (with NAD+ or NADP+ as acceptor) Alcohol Dehydrogenase (NAD) EC 1.1.1.1 Alcohol Dehydrogenase (NADP) EC 1.1.1.2 Homoserine Dehydrogenase EC 1.1.1.3 Aminopropanol Oxidoreductase EC 1.1.1.4 Diacetyl Reductase EC 1.1.1.5 Glycerol Dehydrogenase EC 1.1.1.6 Propanediol-Phosphate Dehydrogenase EC 1.1.1.7 Glycerol-3-Phoshitiendopene Dehydrogenase (NAD+) EC 1.1.1.8 D-xylulose reductase EC 1.1.1.9 L-xylulose reductase EC 1.1.1.10 Lactate dehydrogenase EC 1.1.1.27 Malate dehydrogenase EC 1.1.1.37 Isocitrate dehydrogenase EC 1.1.1.42 HMG-CoA reductase EC 1.1.1.88 Category:EC 1.1.2 (with a cytochrome as acceptor) Category:EC 1.1.3 (with oxygen as acceptor) Glucose oxidase EC 1.1.3.4 L-Gulonolactone oxidase EC 1.1.3.8 Thiamine oxidase EC 1.1.3.23 Xanthine oxidase EC 1.1.3.32 Category:EC 1.1.4 (with a disulfide as acceptor) Category:EC 1.1.5 (with a quinone or similar compound as acceptor) Category:EC 1.1.99 (with other acceptors)
Sources: en.wikipedia.org
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。
Semax 对应 ACTH 第 4 至第 10 位的片段，并在两端做了替换与延长，使其不再具备促肾上腺皮质激素的典型内分泌活性。这一改动同时改变了它在体内的稳定性与分布特征。
俄罗斯将其列为处方药物，需要医生开具处方。多数其他国家把它当作研究化合物，不能作为药品销售或宣称疗效。具体合法性取决于当地法规。
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.