3 Iodophenylacetic Acid

3-Hydroxybutyric acid, that is, β-hydroxybutyric acid, although there is no such accurate understanding as modern times in ancient times, it may have begun to appear in medicine, health care, etc. Although 3-hydroxybutyric acid is not directly mentioned in "Tiangong Kaiwu", there are many accounts of its application to various substances, so we can infer the use of this substance in ancient times.
In terms of medical health, or used to heal diseases and nourish the body. Ancient doctors investigated many natural substances in detail, or found some plants and substances containing 3-hydroxybutyric acid to regulate the functions of human qi and blood, and viscera. In case of weakness and strain, or use it to enhance physical fitness and achieve the effect of promoting justice and removing evil. " The Yellow Emperor's Neijing says: "Righteous qi is stored in it, and evil cannot be dried." 3-Hydroxybutyric acid may be the choice to help the human body restore righteous qi.
Furthermore, it may be used in alchemy and pharmaceuticals. Ancient alchemists were keen on refining longevity medicinal pills and explored the fusion reaction of various substances. 3-Hydroxybutyric acid may become one of the ingredients of medicinal pills due to its unique chemical properties. Although its refining of medicinal pills is mostly superstitious, it objectively promotes the cognition of material characteristics. For example, Ge Hong's "Baopuzi" records the raw materials and processes of alchemy in detail, or indirectly involves 3-Hydroxybutyric acid related substances.
In addition, it may be used in the field of brewing and fermentation. The ancient brewing technology is mature, and the brewing and vinegar making processes are developed. During the fermentation process, microorganisms act or produce 3-hydroxybutyric acid, which affects the flavor quality of the product. The winemaker masters the fermentation conditions based on experience, or inadvertently uses 3-hydroxybutyric acid to generate, so that the wine has a unique taste and aroma. Such as traditional rice wine brewing, complex microorganisms metabolize or generate this substance, adding a unique charm to the wine.

3-Glyceric acid phosphate has various physical properties. Its shape is a colorless crystal, which is relatively stable at room temperature and pressure.
In terms of its solubility, it is soluble in water, because there are polar groups that can interact with water molecules in the molecular structure, so it can interact with water. However, in common organic solvents, such as ether and chloroform, the solubility is quite low, because its molecular polarity is quite different from the non-polarity of organic solvents, and it is difficult to dissolve.
Looking at its melting point, it is about 150 ° C. When the temperature rises to the melting point, 3-phosphate glyceric acid changes from a solid state to a liquid state. This process requires heat absorption to overcome intermolecular forces. Its boiling point also has a considerable value. However, during the heating process, it is easy to decompose before reaching the boiling point, making it difficult to accurately determine its boiling point.
The density of 3-phosphoglyceric acid is slightly higher than that of water, which is due to its relatively large molecular mass and relatively close molecular accumulation. In solution, due to its density difference, it can be separated from other substances by density difference under specific conditions.
In terms of acidity and alkalinity, the molecule contains phosphoric acid groups, which can partially ionize hydrogen ions, so it is acidic. In aqueous solution, it can neutralize and react with alkali to generate corresponding salts. This acidic property allows it to participate in the regulation of acid-base balance and many enzymatic reactions in chemical reactions in living organisms, and plays a crucial role in maintaining the stability of the intracellular environment and metabolic processes.

The chemical synthesis method of 3-hydroxybutyric acid, although not directly described in ancient books, can be deduced from various ancient methods.
The alchemy and medical processing techniques of the past all contain chemical principles. To make 3-hydroxybutyric acid, it can be started from its related raw materials. For example, based on a certain type of compound containing hydroxyl groups and carboxyl groups, according to the ancient method, "use the combination of medicinal and stone phases, control its temperature, and observe its changes." Alcohols with suitable carbon chains can be taken first, and the oxidation technique of the ancient method can be used, such as the use of oxidizing agents such as dansha and saltpeter, to gradually convert the alcohol into an aldehyde, and then oxidize it to form a carboxylic acid.
In this process, the control of fire is crucial. If it is too fierce, it will be easy to coke and the reaction will be excessive; if it is too slow, it will take a long time and the reaction will not be complete. When it is like the ancient alchemy, observe the color of the heat, smell its smell, and adjust it at the right time.
Or it can be obtained by hydrolysis of esters. First, alcohol and carboxylic acid are used to form esters according to the method of "phase dissolution, followed by catalytic substances". The catalysts used may be acid slurry, alum stone and the like. After the ester is formed, water and specific substances are used to promote its hydrolysis to obtain 3-hydroxybutyric acid. When hydrolyzing, it is necessary to observe the change of its physical state and stir it in a timely manner to make the reaction uniform.
And when preparing, the utensils used are also When using clean and temperature-resistant materials, such as ancient pottery dishes and copper kettles, the material should be selected according to the nature of the reaction to prevent it from being mixed with the reactants. In this way, according to the ancient chemical principles, the synthesis method of 3-hydroxybutyric acid may be obtained.

3-Glyceric acid phosphate in storage and transportation, many matters need to be paid attention to.
When storing, the first thing to do is to control the temperature. The properties of this substance are relatively stable, but if the temperature is too high, it is easy to cause its chemical reaction, resulting in structural changes, and then lose its original characteristics and functions. Therefore, it is suitable to store in a low temperature environment, usually 2-8 ° C, which can ensure its chemical stability and prolong the storage period.
Humidity cannot be ignored either. If the ambient humidity is too high, water vapor is easy to interact with 3-Glyceric acid phosphate, or cause it to interact with moisture, or cause it to participate in reactions such as hydrolysis, which affects the quality. Therefore, the storage place should be kept dry, and the humidity can be reduced by auxiliary means such as desiccants.
Furthermore, the choice of storage container is very critical. It is better to choose materials that are chemically stable and do not react with 3-phosphate glyceric acid, such as glass or specific plastic containers. And the container must be well sealed to prevent contact with air. Due to the presence of oxygen, carbon dioxide and other components in the air, or the reaction with 3-phosphate glyceric acid, its chemical composition is changed.
During transportation, shock resistance is essential. Although 3-phosphate glyceric acid is not fragile, it may vibrate or bump excessively, or affect its internal structure, especially when transported in liquid form. Therefore, the transportation vehicle needs to run smoothly and secure the container properly.
Temperature is still critical during transportation. If the transportation distance is long, it is necessary to use cold chain transportation to ensure that the temperature is constant in the appropriate range.
At the same time, the cleanliness of the transportation environment should not be underestimated. Avoid mixing with other chemicals to prevent cross-contamination. If 3-phosphoglyceric acid is contaminated with other impurities or changes its purity, it will affect the subsequent use effect. Only by paying attention to the above things during storage and transportation can the quality and performance of 3-phosphoglyceric acid be ensured.

At present, the price of 3-aminobutyric acid in the market varies depending on the quality and source. Generally speaking, the price per kilogram of ordinary grades is about several hundred yuan. If it is high-purity refined for medicine and high-end health care, the price may exceed 1,000 yuan per kilogram.
Looking at the market conditions, this price fluctuates. Because of the trend of supply and demand, changes in production technology and the price of raw materials are all affected. When demand is booming and productivity is not enough, the price will rise; if production is refined and mass production increases greatly, the price may fall. And the fluctuation of raw material prices is also related to the market price of 3-aminobutyric acid.
In addition, different places and different merchants have different prices. In prosperous commercial ports, due to the convenience of logistics and smooth information, the price may be relatively easy; in remote places, due to the cost of transportation and the delay in circulation, the price may be slightly higher. There are many brands, well-known brands, with their reputation as the most important, quality as the best, and the price may be higher than that of regular products.
Therefore, in order to know the exact price of 3-aminobutyric acid, it is necessary to carefully observe its quality, source, and review the situation. Only by observing changes in market conditions can a more accurate value be obtained.