N,N-dicyclohexyl-1,3-benzothiazole-2-sulfonamide

The thiophene is a five-membered sulfur-containing compound. It is composed of four carbon atoms and one sulfur atom, which is planar. It is aromatic, and its π-son is consistent with shock, that is, 4n + 2 (n-whole), and the π-son of thiophene is 6, so it depends. Among them, the carbon atoms are formed by sp ², and they form a common system with each other. The sulfur atoms are also formed by sp ², and they provide a common system.
Furan is also a five-element compound, but it is composed of four carbon atoms and one oxygen atom. It is planar and aromatic, and the π atom is also 6. The carbon atom is formed by sp ², and the oxygen atom is also formed by sp ², and it provides a solitary molecule to be integrated into the system.
Thiophenofurans are both five-element aromatic compounds, but due to the different atoms, the properties are slightly different. The sulfur atom is small in oxygen atoms, so the density of thiophenes is relatively high, and the reaction activity is also high in furans. Both of these have important uses in various fields such as synthesis and materials science. Their chemical properties enable them to be diversified and reversed, and to derive rich chemical compounds.

Good, today's discussion on the main use of the tanned and fishy viscera. The person in the middle of the tanned is located in the chest, between the two breasts, which is the gathering of the patriarchal qi. The patriarchal qi is accumulated in the chest, out of the throat, through the heart veins, and breathes. Therefore, the middle of the tanned is related to the lifting and lifting of the qi of the human body and the breathing. If the middle of the tanned is dysfunctional, the movement of the qi will be blocked, and the breathing will also be unfavorable.
Furthermore, the middle of the tanned is also very useful for the adjustment of emotions. The mind is the master of the gods, and the middle of the tanned is the guard outside the heart. The change of people's emotions depends more on the heart, and the middle of the tanned is also related to it. If the emotion is too intense, causing qi depression in the tank, it can produce various diseases, such as chest tightness, palpitations, and upset.
As for the lungs, they are the canopy of the five internal organs, and the main qi is breathing. The lungs inhale clear air and exhale turbid air to maintain the normal gas exchange of the human body. Qingqi enters the lungs, propagates and descends through the lungs, distributes to the whole body, and nourishes the organs and meridians. If the function of the lungs is abnormal, the breathing is unfavorable, the clear air is difficult to enter, and the turbid air is difficult to come out, and various diseases arise.
And the lungs are facing the hundreds of veins, and the blood of the whole body is concentrated in the lungs. After the gas exchange through the lungs, it is re-transported to the whole body. Therefore, the lungs also play an important role Also, the lungs are responsible for propagating and lowering, which can regulate the metabolism of water and liquid, so that the distribution and excretion of water and liquid are normal. If the lungs are asymptomatic, the metabolism of water and liquid will be abnormal, which can occur as edema, phlegm drinking and other diseases.
In short, Tanzhong and the lungs have crucial uses in many aspects such as the operation of the human body's qi machine, respiratory function, emotional regulation and water metabolism, and are related to the health of the human body.

To obtain good-colored indigo, 1,3-succinonitrile can be obtained by addition of divinylacetylene and two-molecule hydrogen cyanide. This succinonitrile can be hydrolyzed to obtain succinic acid, and then converted into phthalic anhydride through a series of reactions. Phthalic anhydride and aniline condensation, anthranilic acid can be obtained, which is the key intermediate for the synthesis of indigo.
anthranilic acid can be obtained by diazotization, addition reaction with acetylene, etc., to obtain indole phenol, and indole phenol can be oxidized to obtain indigo. The specific steps are as follows:
1. ** Preparation of 1,3-succinonitrile **: The addition reaction of divinylacetylene and hydrogen cyanide in a ratio of 1:2 is carried out under suitable catalyst and reaction conditions, and 1,3-succinonitrile can be obtained in this step.
2. ** Hydrolysis of succinonitrile **: Hydrolysis of 1,3-succinonitrile can produce succinic acid. After dehydration, loop closure and other reactions, succinic acid can be converted into phthalic anhydride.
3. ** Synthesis of anthranilic acid **: Phthalic anhydride and aniline undergo a condensation reaction to form anthranilic acid. This reaction requires control of reaction temperature, time and proportion of reactants to ensure yield and purity.
4. ** Preparation of indolephenol **: o-aminobenzoic acid is reacted by diazotization to obtain diazonium salt, then added with acetylene, and then reduced to obtain indolephenol.
5. ** Synthesis of indigo **: Under the action of an appropriate oxidant, indolephenol undergoes an oxidation dimerization reaction to eventually generate indigo.
In this synthesis method, each step needs to be carefully controlled to achieve the purpose of efficient and high-quality synthesis of indigo. The conditions of each step of the reaction, such as temperature, pressure, catalyst type and dosage, have a great impact on the quality and yield of the product, so strict operation is required to obtain high-quality indigo.

"Gypsum, its quality is neither stone nor soil. It is taken from its raw and broken, and boiled into powder." Now on the physical properties of gypsum, let's talk about them one by one.
The color of gypsum is often white, and occasionally it contains miscellaneous colors such as gray and yellow. The color is warm and moist, like coagulated jade. Its quality is delicate, and it feels smooth to the touch, just like silk touching the fingertips. Measured by hand, the weight is moderate, and it is not as heavy as gold and stone, nor is it frivolous.
Looking at its shape, under the natural state, it is mostly lumpy, or regular, or rugged, and the edges and corners are round, or sharp. If you hit it with an instrument, the gypsum is easy to break, the thickness of the lobes varies, and there are also those with flat sections, and there are also many people with differences.
The hardness of gypsum is low, and it can be left with a light scratch of the fingernail. Calcined on fire, it will make a slight crackling sound, and gradually change color, and the texture will also change, from the original block to powder.
Furthermore, gypsum has a certain water absorption, and it is placed in a humid place. Over time, the surface will absorb water vapor and become slightly moist. After encountering water, its changes are particularly wonderful. It can react with water and gradually solidify, like rebirth, from a scattered state to a solid body. This property is useful in many fields.
The physical properties of gypsum are unique, or due to the power of creation in heaven and earth, it is unique among the things in the world, which is important for craftsmanship and is also of great benefit to people's lives.

Looking at the current market situation, naphthalene bis-carbonyl-1,3-naphthalopyran, which is in the market situation, needs to be examined in detail.
Naphthalopyran compounds have attracted much attention in the field of materials due to their unique structures and photochromic properties. Its dicarbonyl derivatives have specific chemical activities and optical properties, which are of great importance to material developers.
At present, the market prospect of 2-naphthalopyran has a lot to report. Its photochromic properties make it widely used in many fields such as optical materials and anti-counterfeiting materials. In the field of optical materials, it can be used to prepare intelligent photochromic lenses, which automatically adjust the color with the change of light intensity, providing the wearer with a convenient and comfortable visual experience. The market demand is growing.
In terms of anti-counterfeiting materials, the unique photochromic behavior of naphthalopyrane can design anti-counterfeiting labels that are difficult to imitate, adding a powerful means for commodity anti-counterfeiting, and the market potential is considerable.
However, it also needs to be noted that the market development is not smooth sailing. The complexity of the synthesis process has resulted in high production costs, which limits its large-scale promotion and application to a certain extent. And the market competition is also becoming fierce. Many companies and scientific research teams are involved in the research and development and production of such materials, hoping to get a share of the market. < Br >
To expand the market of 2-naphthalene-pyran, enterprises and researchers should work together to overcome the problems of synthesis process, reduce costs and increase efficiency. At the same time, focus on product quality and performance improvement, strengthen marketing activities and application development, in order to seize the opportunity in the market changes, and promote the prosperity of this material market.