"2-Bromo-1-chloro-4-cyanobenzene" Although this substance is not directly recorded in Tiangong Kaiwu, it can be deduced from ancient pharmacology and process common sense, and its use can be considered.
In the way of medicine, or as the key material for processing good medicines. Ancient healers, who study physical properties, use herbs and gold stones to treat diseases. Compounds containing halogen and cyanyl groups, or have unique pharmacology. The characteristics of bromine and chlorine can help drugs to accurately act on lesions after entering the body. The cyanyl structure may cause specific biochemical changes in pharmacological reactions, helping to regulate yin and yang, and qi and blood, and heal diseases. Although it is not confirmed by detailed ancient books, with the general principles of chemical pharmacology, its potential value in pharmaceutical synthesis cannot be underestimated.
In chemical technology, or as an additive to the color of dyeing, paint making and other industries. In ancient times, dyeing pursued a bright and lasting color. The special structure of "2-bromo-1-chloro-4-cyanobenzene" may be closely combined with fabric fibers to enhance the adhesion of dyes, so that the dyed color will not fade after years and washing. When making lacquer, adding this object may improve the properties of the lacquer, increase its waterproof and anti-corrosion properties, and make the lacquer lasting for a long time, so as to meet the needs of officials and dignitaries for exquisite and durable utensils.
Or it has auxiliary power in metallurgy. In ancient metallurgy, it strives to remove impurities and improve the purity and performance of metals. This compound may be used as a special reagent to react with impurities in metal ores, making it easier to separate, thereby improving the quality of metals. It is used to create excellent weapons, rituals, agricultural tools, etc., to promote the refinement of smelting and casting skills, and is beneficial to the country's armaments, agriculture, and sacrifices.

"2-Chloro-1-ene-4-cyanobenzene" is an organic compound. Its physical properties are as follows:
This substance is mostly a colorless to light yellow liquid under normal conditions, with a special odor. Due to the presence of chlorine atoms, carbon-carbon double bonds and cyanobenzene groups in the molecular structure, it has specific chemical activities and physical characteristics.
In terms of boiling point, due to its intermolecular force, it contains polar cyanobenzene and chlorine atoms to enhance the intermolecular attraction, so the boiling point is relatively high, about 180-200 ° C. This characteristic makes it necessary to reach the corresponding temperature before it can be vaporized and separated when heated for separation or purification. The melting point of
depends on the degree of molecular arrangement and interaction, and is generally in the range of -20-0 ° C. The melting point range indicates that it is mostly liquid at room temperature, and solidifies at low temperatures.
In terms of solubility, due to the polarity of cyanyl and chlorine atoms, it has good solubility in polar organic solvents such as ethanol and acetone, and can form intermolecular forces with these solvent molecules and mix with each other. However, in water, the solubility is poor. Due to the difference in the polarity of water and the polarity of the compound molecule, and the large molecule, it is difficult to fully interact with water molecules and disperse and dissolve.
The density is slightly higher than that of water, about 1.2 - 1.3 g/cm ³. When mixed with water, it will sink to the bottom. This property can be used as a basis when it involves operations such as liquid-liquid separation.
In addition, its volatility is relatively low. Due to the strong intermolecular force, molecules need higher energy to break away from the liquid surface and enter the gas phase. In an open environment, the volatilization rate is slower.

"2-Cyanogen-1-ene-4-carbonylbenzene" is one of the organic compounds. Its chemical properties are unique and have many wonders.
In terms of its activity, the cyanyl group (-CN) is a strong electron-absorbing group, which imparts a certain reactivity to the molecule. In many reactions, the cyanyl group can be hydrolyzed to form a carboxyl group (-COOH); or converted into an amino group (-NH2O) by reduction reaction, which is a common path in organic synthesis. Enyl (-C = C-) also contributes its unique activity and can participate in addition reactions, such as addition with electrophilic reagents such as halogens and hydrogen halides, to form corresponding derivatives.
Carbonyl (-C = O) in "2-cyano-1-ene-4-carbonylbenzene" is both a polar group and reactive. It can react with nucleophiles such as alcohols and amines. When reacted with alcohols, acetals or semi-acetals can be formed; when reacted with amines, imines can be formed.
Furthermore, the phenyl ring structure confers molecular stability, and at the same time, due to the existence of its conjugate system, the electron cloud distribution on the phenyl ring is affected by cyano, alkenyl and carbonyl groups, and the electron cloud shift occurs, which affects the selectivity of the substitution reaction check point on the phenyl ring. In the electrophilic substitution reaction, the localization effect of these substituents will determine the position of the newly introduced group on the benzene ring.
In addition, from the perspective of physical properties, the compound has a certain solubility in organic solvents due to the polarity of cyano and carbonyl, and compared with non-polar compounds, its melting point, boiling point or intermolecular force increase.
In summary, "2-cyano-1-ene-4-carbonylbenzene" has rich and diverse chemical properties due to its cyano, alkenyl, carbonyl and benzene ring structures, and has potential application value in the field of organic synthesis. It can be used as a key intermediate to participate in the preparation of a variety of complex organic compounds.

The production method of "2-cyanogen-1-ene-4-carbonyl aniline" is as follows:
To make this compound, you can first take a suitable starting material and make it through a multi-step delicate chemical reaction. The first step is often an organic compound with a specific structure. Through halogenation, the molecule is introduced into the halogen atom. This step requires careful control of the reaction conditions, such as temperature, reaction time, and the proportion of reactants. If the temperature is too high, the side reactions will be numerous, and if it is too low, the reaction will be slow, and it will be difficult to achieve the desired effect. The reaction time also needs to be precisely controlled. If it is too short, the reaction will not be completed, and if it is too long, it will cause the product to decompose.
The second step is to introduce cyan This process mostly relies on nucleophilic substitution reactions, in which cyanogen-containing reagents interact with the halogenated products of the previous step. This reaction is crucial to the choice of reaction solvents, which can promote the smooth progress of the reaction and have no adverse effects on the reactants and products. At the same time, the pH of the reaction system also needs to be properly adjusted to ensure the efficient and directional occurrence of the reaction.
Then, the alkenylation reaction is carried out to construct the structure of 1-ene. In this step, Wright specifies the catalyst and ligand to make the reaction occur precisely at a specific location. The activity and selectivity of the catalyst have a huge impact on the success or failure of the reaction, and it needs to be carefully screened and prepared. And the reaction process needs to be closely monitored to prevent side reactions from forming non-target alkenyl isomers.
Finally, after the carbonylation reaction, a carbonyl group is introduced at a suitable check point, and the construction of the aniline part is completed. This step also requires fine regulation of the reaction conditions, including reaction pressure, temperature and reaction atmosphere. Improper pressure or reaction cannot proceed or produce abnormal products, and suitable temperature and reaction atmosphere can ensure the smooth and efficient implementation of the carbonylation reaction, so as to successfully prepare "2-cyano1-ene-4-carbonyl aniline". The whole synthesis process requires careful study of the details of each step of the reaction and precise operation to obtain a high-purity target product.

"2-Ammonia-1-naphthalene-4-sulfonic acid", this product is in the city, and its price is variable, which is determined by many reasons.
The supply and demand of Guanfu City, if there are many people who want it, but there are few suppliers, the price will rise; on the contrary, if the supply exceeds the demand, the price will decline. And the difficulty of its production is also tied to the price. If the preparation method is difficult, the materials required are wide and the labor is fine, and the cost is large, the price will be high; if the method is simple, the cost is saved and the labor is easy, the price may be cheap.
In addition, the quality of its quality also has a great impact on the price. Those who are of high quality use it well, and everyone is good, and the price is always high; those who are of poor quality, it is difficult to use it to achieve its effect. If more people discard it, the price will be low.
Furthermore, the price varies depending on the time. Changes in the world and the rise and fall of industry can cause changes in its price. In the past, at a certain time, due to something, the demand for it increased greatly, and the price went up; later times change, it needs to be reduced and the price goes down.
Generally speaking, the market price is often in the range of tens to hundreds of dollars per catty, but this is only an approximation. The actual price depends on the market conditions and quality at that time. There may be excellent products, and the price exceeds this range; there are also inferior ones, and the price is not enough.