4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine

"Tiangong Kaiwu" says: "Where gunpowder is used, sulfur is pure yang, and nitrate is pure yin. This universe also has a magic object." The nitrate mentioned in this is tetranitrogen (4% 2C5% 2C6% 2C7), which is crucial in the production of gunpowder. Nitrate is a key oxidant in gunpowder, which can provide a large amount of oxygen, making the gunpowder combustion reaction violent.
Sulfur (1% 2C3), sulfur is also in gunpowder, which can not only support combustion, but also reduce the ignition point of gunpowder, making it easier to ignite. At the same time, the chemical properties of sulfur also affect the reaction process and product composition of gunpowder.
And charcoal (2% 2C6), charcoal is also. Charcoal is a reducing agent in gunpowder, which reacts violently with the oxygen provided by nitrate to release a large amount of energy, which is the root of the explosive power of gunpowder. Its pore structure also helps to uniformly mix nitrate and sulfur, improving the performance of gunpowder.
The three are compatible in a certain proportion and are made into gunpowder through fine craftsmanship. The birth of gunpowder has triggered changes in many fields such as military and engineering. In the military, from early firearms to later guns, the form of war has been changed; in engineering, it is used for mountain building, mining, etc., which greatly improves labor efficiency. Therefore, nitrogen, sulfur, and charcoal are the main materials used in gunpowder, which have a profound impact on the course of human history.

The question you are asking is about "Synthesis method of 4,5,6,7-tetrahydro-1,3-naphthalene-anthraquinone-2,6-dicarboxylic". This chemical synthesis method needs to follow many chemical principles and steps.
To synthesize this compound, one can consider using suitable starting materials to gradually react to construct the target structure. For example, first select the compound with the corresponding functional group, and gradually build the molecular framework through reactions such as nucleophilic substitution, addition, and redox.
Taking the starting material containing a specific unsaturated bond as an example, the desired substituent can be introduced by adding it to the nucleophilic reagent. Then, or through a cyclization reaction, the basic skeleton of naphthalene and anthraquinone is formed. During this period, precise control of reaction conditions, such as temperature, pH, reaction time, etc., is required to ensure that the reaction proceeds according to the expected path.
Furthermore, for the introduction of dicarboxyl groups, an oxidation reaction can be used at an appropriate stage to convert specific groups into carboxylic groups. If a suitable oxidant is selected, oxidation can be achieved under mild conditions to avoid unnecessary damage to other functional groups.
Or a multi-step series reaction strategy can be considered to integrate multiple reaction steps into the same reaction system, reducing the separation and purification of intermediates and improving the synthesis efficiency. However, this strategy requires more stringent reaction conditions, and requires a deep understanding of the kinetic and thermodynamic properties of each step of the reaction.
The synthesis paths are diverse, and the reaction routes need to be carefully designed according to factors such as actual available raw materials, experimental conditions, and expected yield and purity. Successful synthesis of 4,5,6,7-tetrahydro-1,3-naphthalene and anthraquinone-2,6-dicarboxylic.

In the past, it was often used as an anesthesia aid to help patients forget their pain.

As for ether, it has a variety of uses.
As for ether, it is obtained by the method of 1 and 3 phases. In the past, it was often used as an anesthesia aid, to make patients forget their pain.
As for the two-dimensional thing, it is also referred to as 2 and 6. Its physical reason is normal, and it is often used under normal conditions. It is the same as the color, taste, and density. In terms of chemical properties, its activity is low, flammable, and it burns in oxygen to generate water, resulting in a light-colored flame. It is also original, and it can precipitate the metal in the metal oxide under specific conditions, which is useful for metallurgy and other fields. And one of the two clean energy sources is not yet available or can be widely used in various fields to solve the energy dilemma and environmental problems.

Looking at this question, if you want to know the market price range of Epimedium. However, the information given as "4% 2C5% 2C6% 2C7 - tetraammonia - 1% 2C3 - benzimidazole - 2% 2C6" is obscure, and it is difficult to get the exact price of Epimedium.
If you want to know the market price of Epimedium in the context of "Tiangong Kaiwu", you need to look at various factors. First, the origin is different, and the price may vary. In the place where Epimedium is produced, its output, water, soil, climate, etc., all affect the cost and quality, resulting in different prices. Second, the season is also the main factor. In different seasons, the supply and demand of Epimedium are different, and the price fluctuates from time to time. Third, the difference in use also makes the price different. If used in medicine, the quality requirements are high, and the price may be high; for ordinary things, the price may be slightly lower.
However, due to the unclear information given, it is difficult to determine the market price range. Or more detailed information, such as origin, season, quality, etc., can be used to estimate the approximate price.

According to your question, it is related to the safety precautions of tetrahydrogen and ether. Tetrahydrogen is flammable, and its vapor and air can form an explosive mixture, which can cause combustion and explosion in case of open flame and high heat energy. Therefore, where tetrahydrogen is used, fireworks are strictly prohibited, and electrical equipment must have explosion-proof function. And tetrahydrogen is volatile and should be stored in a cool and ventilated compartment, away from fire and heat sources. The compartment temperature should not exceed 30 ° C.
In addition, ether is also flammable. Its vapor is heavier than air and can spread to a considerable distance at a lower place. In case of open flame, it will lead to backfire. When using, the source of fire should also be eliminated, and the operation should be carried out in a well-ventilated environment, preferably in a fume hood. Peroxides can be formed when ether is left for a long time, and it is easy to explode when heated or hit. Before use, it is necessary to check whether it contains peroxides. If so, it should be properly disposed of.
Both are precursor chemicals. The procurement, use and storage must strictly abide by relevant regulations, go through legal procedures, and keep detailed records for inspection. During operation, the experimenter should wear appropriate protective equipment, such as protective glasses, gloves, laboratory clothes, etc., to prevent contact injuries. In case of careless contact, appropriate first aid measures should be taken quickly according to the specific situation and seek medical attention in time. In this way, it can be used safely and avoid accidents.