5-Bromobenzo[b]thiophene

Mercury is a highly toxic substance and is listed alongside lead as a toxic substance. Its sexual flow can evaporate at room temperature and disperse in the air. If inhaled, it will be harmful.
The form of mercury is often liquid, with silver flickering, and it is scattered when touched, making it difficult to gather. Its specific gravity is quite large, and it is heavier than ordinary substances.
The boiling point of mercury is very low, only 357 degrees Celsius. When heated slightly, it turns into steam. And mercury vapor is colorless and odorless, which is difficult for people to detect. However, it is highly toxic, invades the human body, and damages the nerves, kidneys and other organs.
The solubility of mercury also has characteristics. Although it is insoluble in water, it can form an alloy with many metals. This alloy is called amalgam.
In addition, the chemical properties of mercury are relatively active and can react with a variety of substances. In case of sulfur, it will quickly combine to form mercury sulfide, which is a way to reduce the toxicity of mercury.
In the era of "Tiangong Kaiwu", although people have been aware of the toxicity of mercury, it was limited to the technology at that time, and it was inevitable that there would be omissions when mining and using mercury. Today, science is prosperous, and we are well aware of the harm of mercury. We should treat it with caution and properly dispose of it to prevent it from endangering the well-being of everyone and the natural environment.

5-% cyan [B] has the following properties:
First, its properties are sticky. 5-% cyan under normal conditions, it is a paste, and the adhesion is low. If placed on the surface of the object, it can be tightly attached and not easy to fall off. This stickiness is especially important on roads, etc., which can make aggregates such as stone dense and sticky, and the road surface of the road.
Second, it has waterproof properties. 5-% cyan can effectively block the penetration of water. Because its molecules are dense, water can enter them. Therefore, in house waterproofing, underground waterproofing and other fortifications, 5-% cyan is often covered or used as a raw material for waterproof membranes to protect the building from water damage.
Third, the quality of the chemical is good. In normal and general conditions, 5-% green is not easy to react with other substances. It can resist the corrosion of polyacids, chemicals, and other chemicals. This characteristic makes it used as an anti-corrosion material in projects with corrosive environments such as chemical engineering and sewage treatment.
Fourth, the quality of the product is special. 5-% green is subjected to oxidation, and the fluidity increases greatly when the degree rises to a certain extent; when it is hardened by cold, it is brittle. This characteristic needs to be properly grasped during construction, and it needs to be operated properly to ensure the quality of the construction product. If the road is rough, it needs to be turned into a solid pavement after it has been turned into green, and it needs to be cleaned and leveled.

5-%E6%BA%B4%E8%8B%AF%E5%B9%B6% [b]% E5% 99% BB% E5% 90% A9, it is also used by the Shinsei's Baicao. Its main purpose is to use it, and it has the following ends.
One of them is to cure diseases. In ancient times, the people suffered from diseases and epidemics, and they have not yet been cured. 5-%E6%BA%B4%E8%8B%AF%E5%B9%B6% [b]% E5% 99% BB% E5% 90% A9 has a miraculous effect, which can solve the common poison, and the common people lose it. In case of cold and evil invading, causing pain in the limbs and unfavorable flexion and extension, this can be applied or decocted, so that the evil can go out and the pain can be solved. In case of mental illness, if the function of the viscera is caused by emotional discomfort, loss of food, etc., this medicine can also help the viscera and restore its normal transformation.
Second, it helps practice. In the eyes of practitioners, 5-%E6%BA%B4%E8%8B%AF%E5%B9%B6% [b]% E5% 99% BB% E5% 90% A9 can calm the mind, clear the mind, and make it easier for practitioners to enter the state of clearing. Taking this medicine can improve the practice of blood, health and soul, and provide physical protection for sitting practice. And it contains heaven and earth, which can help practitioners understand the way of heaven and earth, and accelerate the process of practice.
Third, extend life. This medicine can nourish the essence and transform people into the essence, spirit, and god. If you wear it regularly, you can make your complexion dull, energetic, and increase your resistance to external evil, and achieve the purpose of extending your life. In that limited area, 5-%E6%BA%B4%E8%8B%AF%E5%B9%B6% [b]% E5% 99% BB% E5% 90% A9 is suspected to be the best quality of life, and provides a hope for people to pursue it.
In this way, 5-%E6%BA%B4%E8%8B%AF%E5%B9%B6% [b]% E5% 99% BB% E5% 90% A9 In ancient times, it played a very important role in healing and saving people, or cultivating life, and it was a rare god.

The synthesis method of 5-% bromo-indolo [b] carbazole is an important exploration in the field of chemical synthesis. According to the technical ideas involved in "Tiangong Kaiwu", it can be explored from the aspects of raw material selection, regulation of reaction conditions, and synthesis path design.
In the selection of raw materials, it is appropriate to select basic compounds containing bromine and indole and carbazole structures. If bromine-containing aromatics and indole derivatives are used as starting materials, the two are easily available and structurally stable, laying the foundation for the reaction. "Tiangong Kaiwu" says that "it is difficult for a woman to cook without rice". Only with excellent raw materials can there be good success.
The regulation of reaction conditions is crucial. Temperature, pressure, and catalyst are all key factors. The temperature needs to be precisely controlled. If it is too low, the reaction will be slow, and if it is too high, it will cause side reactions. Under moderate heating, the raw material can react slowly. In terms of pressure, atmospheric pressure or a specific low pressure environment may be conducive to the reaction. As for the catalyst, choose the one with high efficiency and selectivity, which can speed up the reaction rate and improve the purity of the product. For example, in the process of "Tiangong Kaiwu", the heat, wind and other conditions need to be just right.
There are multiple ideas for the design of the synthesis path. Or build the indole structure first, and then introduce the carbazole part and brominate; or conversely, form the carbazole structure first, and then connect the indole and brominate. Or use the one-pot method to synthesize multiple raw materials in the same reaction system through a series of reactions in one However, no matter what method is used, the simplicity of reaction steps and atomic economy need to be considered. The process of "Tiangong Kaizhi" seeks to be streamlined and efficient, and the synthesis path should also be the same, reducing intermediate steps, reducing raw material loss, and improving yield.
5-% bromoindolo [b] carbazole synthesis requires careful consideration of raw materials, reaction conditions, and synthesis paths. Drawing on ancient process wisdom, find efficient and feasible methods to produce high-quality products.

Mercury is a toxic substance, and it needs to be paid attention to when it is not stored properly.
Mercury is toxic, so the container must be well sealed to prevent mercury from evaporating and endangering the people around it. In addition, the storage of mercury should be resistant, to avoid cracking due to the heavy weight of the container.

Mercury, the packaging of mercury, follow the packaging of dangerous products.
tools also need to be properly packaged to prevent damage due to vibration, collision, etc.

It is not as easy to burn as mercury, but its compounds are mostly toxic. The storage of mercury and its compounds should also be kept sealed to prevent the contents of the container from being reversed, and it can also prevent people from eating. The storage environment should be dry, because the moisture environment may cause raw or other chemical reactions.