1% 2C2, that is, dimethylbenzene, its isomers are o-xylene, m-xylene and p-xylene. Although organic compounds such as xylene-dichlorobenzene-3-bromotoluene did not have the accurate understanding of modern times in ancient times, they may have certain applications from the perspective of traditional alchemy, pharmaceuticals and early exploration of material properties.
In the era of "Tiangong Kaiwu", although such specific compounds are not directly mentioned, there are many records on the preparation and application of various substances in the book, which can be used to infer their possible uses. Taking xylene as an example, in ancient times, some substances with similar aromatic properties were used for incense because of their unique smell, which can improve the indoor odor environment and create a pleasant atmosphere. In some early drug processing processes, organic solvents with certain solubility, such as xylene, may have been inadvertently used to help dissolve some drug components to promote uniform mixing of drugs and improve drug efficacy.
Dichlorobenzene, if it is speculated from the ancient people's exploration of the characteristics of chlorine-containing and benzene-containing substances, chlorine-containing substances often have a certain sterilization and disinfection ability. Dichlorobenzene may have potential applications in local environmental disinfection and preventing the spoilage of articles. For example, when preserving some perishable precious books and fabrics, use its certain bactericidal and insect-proof properties to ensure that the items are in good condition.
3-Bromotoluene, the introduction of bromine elements makes its chemical properties more active. Although it was difficult to know its exact structure and properties in ancient times, from the application of similar active substances, or for some special chemical reactions, to try to make new substances. In traditional pigment production, active chemicals are used to react with other raw materials to generate new colors or improve pigment stability.
In short, although it was impossible to accurately understand such compounds in ancient times, they were used in the exploration practice of life and production, or indirectly due to some characteristics of these compounds, which played a role in improving life and promoting the development of technology.

As for dimethyl-3-alkyne, its physical nature is interesting, let me explain.
The color of this compound is often slightly golden, just like the ancient blue utensils, it has a deep sense of transparency. Its outer shape is complex, and it is multi-crystalline and polymerized. The crystal arrangement is not complete, but it also has its own order, just like a natural wonder.
And the density, dimethyl-3-alkyne has a certain weight, and its density is high. When placed in the hand, it can feel its heavy weight. This is because of the gold elements such as gold and gold, the amount of gold atoms is large, resulting in an increase in the overall density.
Furthermore, its high melting rate requires a high level of phase in order to make it solid and liquid. This property is also due to the melting effect of gold atoms. To break this effect and promote the melting of the substance, a large amount of energy is required.
In terms of solubility, dimethyl-3-alkyne dissolves in normal water, ethanol, etc., and dissolves, similar to refusing to blend. However, in some special dissolves, such as dichloromethane, tetrafuran and other non-dissolvable or weak dissolves, there is a certain degree of dispersion and dissolution, which is like the close dissolution of its molecules, and its molecular integrity is biased towards non-dissolvable, so it is more soluble in non-dissolvable dissolves.
In addition, the dissolvable properties of dimethyl-3-alkyne are also worth mentioning. Because it contains gold elements, it has the ability to dissolve to a certain extent, and it may not be as poor as gold. However, under specific conditions, it can also be used as a medium for dissolving, which makes it useful in some sub-devices, catalytic reaction and other fields.

The physical properties of 1% 2C2-dimethylenyl-3-deuteronaphthalene are quite stable. Dimethylenyl has a unique structure, which is connected to the metal atom by a carboxylic ring to form a stable sandwich structure, giving this compound specific stability. In 1% 2C2-dimethylenyl-3-deuteronaphthalene, the presence of dimethylenyl makes the molecular skeleton solid and resistant to external interference.
Furthermore, the introduction of deuterium atoms also contributes to its stability. Compared with hydrogen, although deuterium is an isotope, its mass is higher, and the bond energy of C-D is higher than that of C-H. In 1% 2C2-dimethylenyl-3-deuteronaphthalene molecules, the deuterium-containing chemical bonds are more firm and are not easy to break under normal conditions, thus improving the overall stability.
The chemical environment in which this compound is located also affects its stability. If the environment is free of strong oxidants, strong acids, strong bases and other chemicals that can cause structural damage, and the physical conditions such as temperature and pressure are mild, 1% 2C2-dimethylenyl-3-deuteronaphthalene can maintain a stable state. In common laboratory environments, without deliberately applying intense chemical reaction conditions, this compound can maintain its chemical composition and structure unchanged for a long time.
In summary, 1% 2C2-dimethylenyl-3-deuteronaphthalene exhibits good chemical stability due to its unique molecular structure, deuterium atomic characteristics and general chemical environment.

The production process of 1% 2C2-difluoro-3-bromobenzene is as follows:
First take an appropriate reaction vessel and prepare the raw materials carefully. Use a suitable halogenating agent, such as a fluorine-containing halogenating reagent, and the corresponding benzene parent compound, in a precise ratio, and slowly put it into the reactor. During the reaction, temperature control is the key, and it is often necessary to maintain a specific temperature range, such as an ice bath or an oil bath, to ensure that the temperature is stable and to avoid reaction deviation due to temperature fluctuations.
In the reaction system, the choice of catalyst is also very important. Choose a catalyst with appropriate activity and excellent selectivity to promote the speed of the reaction and increase the yield of the target product. The amount of catalyst must be carefully calculated according to the scale of the reaction and the characteristics of the raw materials. Do not make too much or too little, which will affect the process of the reaction. When the
reaction is carried out, it is necessary to continuously stir to fully mix the reactants and make the reaction uniform. And for the reaction process, by suitable analytical means, such as gas chromatography, liquid chromatography, etc., real-time monitoring, detailed the degree of reaction, to determine the consumption of raw materials and the formation of products.
When the reaction is approaching the end point, the product is precipitated from the reaction mixture by appropriate separation and purification methods. Such as the extraction method, select the appropriate extractant, extract the product from the self-system, and then purify the product by distillation, recrystallization and other means to obtain high-purity 1% 2C2-difluoro-3-bromobenzene. The entire production process is interlinked, and each step needs to be carefully controlled in order to achieve the desired effect and produce qualified products.

The price range of 1% 2C2 and diterpene-3-Gracilaria in the market varies due to many factors. There are various types of Gracilaria, and there are differences in quality and use of different types, resulting in fluctuations in the price range. And its price is easily affected by region, season, market supply and demand, etc.
Under normal circumstances, Gracilaria is common in the ordinary market, and its price may range from a few yuan to a few tens of yuan per catty. If it is a high-quality, specially processed or purpose-specific Gracilaria product, the price may be higher, up to hundreds of yuan per catty.
In coastal areas, prices may be relatively close to the people due to large output and sufficient supply; in inland areas, prices may increase due to factors such as transportation costs.
In the peak growing season of Gracilaria, production increases, prices may stabilize or even decline; in non-peak seasons, prices may rise slightly due to reduced supply.
The following pairs of market supply and demand have a significant impact on prices. If the market has strong demand for Gracilaria and limited supply, prices will rise; conversely, if supply exceeds demand, prices may face downward pressure.
To sum up, the price range of 1% 2C2 and diterpene-3-Gracilaria is relatively broad, ranging from a few to a hundred yuan per catty, and the actual price needs to be determined according to the specific market conditions.