2-PYRAZINE ACETIC ACID

2-% hydroxybutyric acid, also known as gamma hydroxybutyric acid (GHB), is a drug, and there is no legitimate main use. Because it is a drug, in China, the manufacture, sale, transportation, use and other actions related to this are strictly prohibited by law.
View "Tiangong Kaiwu", which is an ancient scientific and technological masterpiece, but it does not involve the content of 2-% hydroxybutyric acid. Because 2-% hydroxybutyric acid is a drug synthesized by modern chemistry, there was no such thing in ancient times.
2-% hydroxybutyric acid is extremely harmful to the human body. It can quickly act on the central nervous system and affect people's consciousness, cognition and behavior. If taken in small amounts, people may experience dizziness, drowsiness, nausea and vomiting; if ingested in excess, it can cause coma, respiratory depression, and even life-threatening. And long-term use is easy to become addicted, and it is difficult to quit after addiction, which will cause irreversible damage to personal physical and mental health. In addition, because it is often used by criminals for illegal and criminal activities such as rape, it seriously threatens the personal safety and social stability of others.
Therefore, we must recognize the drug nature of 2-% hydroxybutyric acid, be vigilant at all times, stay away resolutely, and must not be contaminated due to curiosity and other reasons, in order to protect the health and social peace of ourselves and others.

2-% pentanedioic acid, its physical properties are as follows:
This substance is mostly crystalline at room temperature, with a white color and a certain luster, and a pure appearance. Its melting point is about 137-139 ° C. At this temperature, it gradually melts from solid to liquid, showing the characteristics of phase transition of matter.
2-% pentanedioic acid has a certain solubility in water. Due to the existence of polar groups in its molecular structure, it can interact with water molecules, causing it to partially dissolve in water and form a uniform and stable solution. However, in organic solvents such as ethanol and ether, its solubility is different from that in water. Due to the different forces between organic solvents and 2-% pentenedioic acid, it either dissolves better or has limited dissolution.
Looking at its density, it is slightly higher than that of common organic solvents, similar to the density of water, and may be suspended or slightly sinking in water. This density characteristic is closely related to its molecular weight and intermolecular arrangement.
Furthermore, 2-% pentenedioic acid has a certain smell. Although it is not strong and pungent, it also has a unique smell under the fine smell. This smell originates from the volatilization of specific chemical groups in its molecular structure. The physical properties of 2-% pentenedioic acid are determined by its molecular structure, and the properties are interrelated, which affects the existence and behavior of this substance in different environments. It is of great significance in many fields such as chemical research and industrial applications, laying the foundation for the understanding and use of this substance.

2-% β-aminopropionic acid is an organic compound with unique chemical properties. It is said in ancient Chinese.
This substance is white crystal or crystalline powder at room temperature, and its shape is pure and fine in texture. Looking at its solubility, it is easily soluble in water and quietly disperses in water, just like ice and snow entering the flow, and the phase melts without a trace, but it is difficult to dissolve in organic solvents such as ethanol and ether. It is like oil and water, which are incompatible.
When it comes to acidity and alkalinity, 2-% β-aminopropionic acid is bisexual. In an acidic environment, its amino group is like a humble gentleman, accepting protons and showing alkalinity; in an alkaline environment, the carboxyl group is generously given to protons and is acidic. This characteristic allows it to exhibit unique chemical behavior in different chemical atmospheres, just like a wise man, taking advantage of the situation and adapting to the situation.
Let's talk about its chemical reaction again. It can form salts with acids, just like yin and yang are harmonized, and combine with each other to form new compounds. This process is like a good relationship and harmonious symbiosis. When it encounters alcohol, under suitable conditions, it can undergo an esterification reaction, just like two elves dancing together to generate esters with a special aroma, such as flowers blooming, and the aroma is overflowing.
And because it contains amino and carboxyl groups, it can undergo a polycondensation reaction. Many 2-% β-aminopropionic acid molecules are connected to each other, such as rings, to form long-chain polymers. This polymer has unique properties, either good flexibility or high strength, and has a wide range of uses, such as silk thread fabrics.
2-% β-aminopropionic acid is rich in chemical properties and has important value in many fields such as organic synthesis, medicine and chemical industry. It is like a pearl, shining brightly in the chemical firmament.

2-% pentenedioic acid is an organic compound, and its synthesis methods are various. In ancient Chinese:
First, it can be prepared by the reaction of carbon-carbon double bonds. Choose a suitable olefin to react with a reagent with a specific functional group. For example, hydrocarbons containing unsaturated bonds and diacid anhydride reagents are added in the presence of a catalyst. Among them, the catalyst is very important, which can promote the progress of the reaction, increase the reaction rate and yield. The reaction environment also needs to be carefully controlled. Conditions such as temperature and pressure have a significant impact on the direction and result of the reaction. If the temperature is too high, or side reactions are clustered, the product is impure; if the temperature is too low, the reaction rate is slow and takes a long time.
Second, through the conversion and synthesis of halogenated hydrocarbons. First, the halogenated hydrocarbons are taken and reacted with nucleophiles to introduce specific functional groups. Then through a series of reactions, such as hydrolysis and oxidation, the structure of pentenedioic acid is gradually constructed. During the hydrolysis process, careful selection of hydrolysis conditions and reagents is required to ensure the smooth conversion of halogen atoms into hydroxyl groups and other required functional groups. The oxidation step also needs to be precisely controlled, and appropriate oxidants are selected to make the intermediate products moderately oxidized, and finally 2-% pentenedioic acid is obtained.
Third, the synthesis method using natural products as starting materials. There are many compounds with specific structures in nature, which can be modified after extraction and separation. To find natural products containing similar structural fragments, by chemical means, such as bond breaking and bonding reactions, reshape their structures and transform to the target of 2-% pentenedioic acid. This approach requires in-depth knowledge of the properties and reactivity of natural products, and the extraction and separation process may be complicated and time-consuming, but its advantage is that the raw materials are natural, or have unique reaction paths and product characteristics.

It is difficult to determine the price of dipentanoic acid between the markets today. The change in its price depends on many ends.
The first is the abundance of the product. If the product is abundant in the middle of the year, and its accumulation is in the market, the price may be leveled or even reduced. If there is a shortage of products, and there are many people who want them, the price will rise.
The second is the amount of demand. In various industries, if the pharmaceutical industry uses dipentanoic acid as the material, its industry is prosperous, and those who need it will have a high price; if the industry is slightly declining and needs to be reduced, the price will also go down.
There is also the control of merchants. If you conspire to control the market, hoarding goods but not selling, waiting for the price to be sold, the price will go up; if you compete for profit, the price will go down.
And the luck of the four parties is also involved. The convenience of the road, the increase or decrease of the transportation capital, can make the price different. If the road is passed and the cost is saved, the price may be stable; if the road is blocked and the fee is on, the price will go up.
Generally speaking, the price often fluctuates between tens of dollars and hundreds of dollars. If you are rich in years and ask for less, it may be as low as tens of dollars per catty; if you are sorry and ask for prosperity, and the merchant manipulates it, then hundreds of dollars per catty are unknown. The market conditions are ever-changing, and the price is difficult to adhere to. Only when you observe it can you know the details.