3,5-dimethyl-4-iodoisorazole

The main uses of 3% 2C5-dimethyl-4-carbonyl butyric acid, according to the classical Chinese text of Tiangong Kaiwu, are as follows:
This substance has functions in all kinds of crafts and medicine. In the field of craftsmanship, it can be involved in the way of dye production. In the past, dyestuffs wanted to obtain bright and long-lasting dyes, or used this substance as a base. With its characteristics, it can help dyes better adhere to fabrics, so that the dyed color will not fade easily after years and washing. Looking at ancient fabrics, those with a long-lasting color, or the clever use of these substances in the production of dyes.
In medicine, it also contributed. Ancient healers, well aware of the nature of all kinds of herbs and trees, this 3% 2C5-dimethyl-4-carbonyl butyric acid may be used as medicine. Although not detailed in the classic compendium of herbal medicine, it may be applied in folk herbal medicine. Or it can regulate the flow of qi and blood in the body, or it can dissipate some sores, swelling and poisonous diseases. Because of its unique structure, it has special medicinal power and can interact with the qi and blood of human meridians to achieve the purpose of healing.
Furthermore, in some brewing techniques, this substance may also have subtle effects. Home of Brewing, to make the wine taste mellow and unique aroma, in the process of fermentation, or use this substance to fine-tune. It can help the fermentation process to be smoother, and the wine made has a more fragrant aroma and a softer taste. The ancient wine is famous, and its brewing beauty may be related to the addition of such substances. Although the dosage is subtle, it has a far-reaching impact.

Arsenic trioxide, commonly known as arsenic, is a highly toxic substance, and its physical properties can be observed.
Under normal conditions, arsenic is a white crystalline powder, like frost and snow, delicate and light, which makes it look like. Its texture is very loose, without a special luster, but it shows a dim light under the light. Smell it, there is almost no smell, but taste it, it is really impossible to do it, because it is highly toxic, and the entrance is life-threatening.
Its density is relatively large, heavier than ordinary powder, and it can be felt when placed in the palm of your hand. Arsenic is stable at room temperature, but when it encounters a hot topic, it can sublimate, changing from a solid state to a gaseous state without going through a liquid state. This is its unique physical transformation.
Furthermore, arsenic is slightly soluble in water, dissolves slowly in water, and the solubility is quite low. The solution is slightly turbid and non-clear and transparent. Although it does not dissolve much, its toxicity is not reduced, and the dissolved part is still extremely harmful.
When arsenic is in a solid state, it feels delicate to the touch, like fine sand, but it must not be ignored because of its harmless appearance. Although it is not significantly different from others in terms of physical form, it is highly toxic and well-known, but it is an extremely dangerous thing. It should be kept at a distance, and there should be no slightest slack and contempt, in case it is careless and a catastrophe is imminent.

3% 2C5-diphenyl-4-thiazole isoxazolinone, this is an organic compound. The stability of its chemical properties is related to many fields of application and cannot be ignored.
From the perspective of structure, the existence of diphenyl gives it a specific spatial configuration and electron cloud distribution. Phenyl is a conjugated system with a certain electron delocalization ability, which can affect the stability of molecules. The structure of thiazole isoxazolinone is the core active site of this compound. In this heterocyclic structure, the existence of heteroatoms such as nitrogen, oxygen, and sulfur participates in the electronic effects and spatial interactions in molecules through their own electronegativity and lone pairs of electrons.
In terms of stability, its chemical stability is highly influenced by environmental factors. In a dry environment at room temperature and pressure, the compound is relatively stable. Because the chemical bonds in the molecule can resist the influence of general environmental factors. However, in case of high temperature, the thermal motion of the molecule intensifies, and the vibration of the chemical bond increases. When the energy reaches a certain threshold, or the chemical bond breaks, the stability is damaged.
Furthermore, pH is also a key factor. In a strong acid or strong base environment, the molecular structure may be destroyed due to protonation or deprotonation reactions. Under acidic conditions, heteroatoms may accept protons, changing the charge distribution and electron cloud density of molecules, affecting the interaction within molecules; under alkaline conditions, reactions such as nucleophilic substitution may occur, causing molecular structure disintegration.
In addition, light also affects its stability. Light energy at certain wavelengths may be absorbed by molecules, causing electrons to jump to high energy levels, triggering photochemical reactions and destroying the original structure of molecules.
Overall, the chemical stability of 3% 2C5-diphenyl-4-thiazole isoxazolinone is not absolute, and it is relatively stable at room temperature and pressure and under conventional environments. However, extreme conditions such as high temperature, strong acid and alkali, and specific light may damage its stability.

To make a compound of triethylmalonic acid, there are various methods. This wonderful method is found in the description of "Tiangong Kaiwu", recorded in ancient French words, as follows.
First, the method of ester condensation can be used. Based on ethyl acetate and diethyl malonate, supplemented by alkali such as sodium alcohol. Sodium alcohol, strong in nature, can capture the active hydrogen in ethyl acetate and diethyl malonate, causing the formation of negative ions. The two negative ions are merged and changed by nucleophilic substitution to obtain an intermediate product containing the desired carbon frame. After being treated with acid, the intermediate product is hydrolyzed and triethylmalonic acid is formed. The process is delicate, such as the work of creation, interlocking step by step, and it is necessary to carefully observe the temperature and time of the reaction before this synthesis can be achieved.
Second, the condensation of aldol and ketone is also feasible. First, the appropriate aldol and ketone are used as the quality, and the carbonyl of aldol and ketone is very active. In the alkali environment, the alpha-hydrogen of aldol or ketone is attracted by the base and generates carbonegative ions. This carbonegative ion has strong nucleophilicity and can attack the carbonyl of another aldehyde or ketone. Take propionaldehyde and acetylacetone as an example. With the help of alkali, the two first form enol negative ions, and then condensate to obtain a complex carbon chain. After oxidation, acidification and other steps, the structure is modified, and finally triethylmalonic acid is obtained. This way is like painting a complicated picture, every step is about success or failure, the amount of alkali and the sequence of the reaction all need to be carefully controlled by the craftsman.
Third, there is a method that starts with halogenated hydrocarbons and malonate esters. The halogenated hydrocarbons are highly active. When encountering the negative ions of malonate esters, the halogen is replaced and the carbon chain grows. After many similar reactions, a suitable carbon chain structure is constructed. After hydrolysis, decarboxylation and other steps, it is converted into triethylene malonic acid. This approach is like building a pavilion, every brick and tile must be precise. The choice of halogenated hydrocarbons and the control of reaction conditions are all key. If there is a slight difference, it will be difficult to achieve the expected combination.
Each of these methods has its own length and difficulty. To obtain pure triethylmalonic acid, it is necessary to choose the method carefully according to the convenience of raw materials, equipment, and skills.

In today's world, among the shops in the market, the price of the two ritual bases and the four treacherous flutes has its own style. The three-two-five, this is an exquisite system, based on the two rituals, contains the wonders of heaven and earth, its craftsmanship and excellent materials. The price of the market may vary depending on the quality and the thickness of the workmanship. For those who are of high quality and exquisite craftsmanship, the price may be as high as a thousand gold; if the material is slightly inferior and the craftsmanship is ordinary, it will cost hundreds of gold.
As for the four treacherous flutes, their system is strange, and the sound contains treacherous meaning. Although they are extraordinary, they are also noticed by all kinds of music lovers. In the market, the price range is quite wide. If it is made with ingenuity, the materials are rare, and the work of famous craftsmen is blessed, the price can be close to a thousand; if it is only an ordinary system, it may be worth two or three hundred gold.
The price of building a market often changes due to the supply and demand of the time and the scarcity of the goods. When people ask for it, the price will increase; if no one cares, the price will fall. In order to know its exact price, we still need to observe the current market conditions, and visit merchants and Tibetans to obtain it.