3-pyridinecarboxylic acid, 5-bromo-2-methyl-, ethyl ester

The chemical properties of this product are related to its essential characteristics and are extremely important. It is stable, and under normal conditions, it is not easy to react violently with other things. Just like the ancient rock, it is not easily altered by wind and rain.
It is also soluble, and can gradually melt in a specific solvent, just like ice and snow in the warm sun, slowly melting. This property allows it to participate in the reaction in the state of solution in many processes to achieve the desired effect.
And it has reactivity. When encountering suitable reactants and under suitable conditions, it can actively react chemically to generate new substances. However, this reaction needs to be carefully controlled, just like riding a horse on a narrow road, and a little carelessness can lead to mistakes.
Furthermore, its thermal stability cannot be ignored. In case of high temperature, it may maintain its inherent structure and properties, or it may undergo changes such as decomposition and phase transformation, which is related to its application in high temperature environments.
Looking at its chemical affinity, it has a special attraction to certain substances, and it can be closely combined with it to form a stable combination, just like Boya's child stage, which fits each other.
This product has a variety of chemical properties, and each property is interrelated. In practical applications, it needs to be carefully studied in order to make good use of its properties and maximize its efficacy. Just like a good craftsman's utensil, you must understand its nature before you can skillfully apply your skills and make a fine work.

The main uses of this product are all kinds. One is the need to help with labor. In agriculture, it can be used to cultivate the land, make the field soft and fertile, and benefit the sowing of seeds and the growth of crops. As "Tiangong Kaiwu" says: "The agricultural utensils are not other, but the tools of the living." This product may be used for the like of a leopard. Farmers hold it and work hard in the fields, turning the soil and weeding, in order to hope for a bumper harvest.
In addition, it can also be used for construction. When building a house, it can assist in the transportation of materials and the construction of beams and columns. In ancient times, craftsmen relied on all kinds of utensils to build palaces and pavilions. This product may help them to properly place materials such as wood and stone into magnificent buildings.
Again, it can also be used in warfare. It can be used as an aid to weapon building, or for the manufacture of fortifications. In ancient times, there were frequent wars, and the sophistication of weapons and equipment was crucial to victory or defeat. This product can participate in the forging and polishing of weapons to make weapons sharp, or help build barriers and trenches to defend against foreign enemies.
It can also be used in many aspects of daily life. Such as making living utensils for daily needs. It can be used to make cups, plates and bowls to complete daily use.
All in all, this product has a wide range of uses and can play an important role in agriculture, industry, warfare, and life. It is indeed indispensable.

The synthesis method of this product is particularly complicated and delicate.
The cover needs to first take the essence of the spiritual valley. This spiritual valley was born in a secluded realm, sucks the spiritual energy of heaven and earth, and bathes the essence of the sun and the moon. Its quality is pure, and it is the foundation of synthesis. When taking the grain, you need to choose a good time. When the stars are bright and the moon is like training, you can cut it with a jade sickle to ensure that its spiritual energy is not lost.
Then, put the spiritual valley in the pill furnace and slowly bake it with three flavors of true fire. This fire is an extraordinary fire, which is transformed by the energy of the sun between heaven and earth, and the fire is mild but fierce. When baking the valley, you need a special person to guard it and watch its color change. When the valley turns red and there is a faint bright light flowing, you can cease fire.
Then, study the baked spiritual valley into powder and place it in the spiritual spring. This spiritual spring comes from the depths of the earth and is rich in many rare minerals and spiritual energy. When the powder enters the spring, it is like a fish in water and quickly fuses into it. At this time, you need to slowly stir with the branches of spiritual wood to fully blend the two.
Then take the extraterrestrial meteorite iron, which has traveled through the stars and carried the mysterious power of the universe. Calcined it until it was red, put it into the mixed liquid of Lingquan and Linggu powder, and in an instant, the liquid was full of light and hot steam evaporated. When the light is slightly reduced, continue to warm with spiritual fire, and constantly add special medicinal herbs. This medicinal herb is prepared from several kinds of fairy herbs in a specific proportion.
Repeated in this way, all materials are fused and penetrated each other, until the synthesized substances are seamlessly integrated. Its shape is warm and moist like jade, and its quality is extremely tough. The whole process has extremely high requirements on the environment, heat, and material ratio. If there is a slight difference, it will be difficult to succeed. It is a delicate and complicated synthesis technique.

There is something today, and the price of it in the market is difficult to determine its scope. The situation in the market is complex, and the price of things often changes due to changes in time, place, quality and supply and demand.
Looking at the past and present, the market has changed, but the price is not constant. In the past, the price of grain was low in good years, and high in poor years. Craftsmanship, the price of fine is high, and the price of coarse is low. And the distance of the land is also related to the price. Long-distance transshipment costs a lot, and its price rises.
Today, this thing is in the market. If it is of high quality and urgently needed by the public, the price may increase. However, if there are many of the same kind, the supply exceeds the demand, and the price will decline. Moreover, in the place where it is located, the price is also different between the prosperous city and the remote countryside. In the city, the demand is abundant, and the price may be considerable; in the countryside, the demand is weak, and the price may be mediocre.
Roughly speaking, if the quality of this object is excellent, the craftsmanship is exquisite, and it is needed at the time, in the prosperous place, its price may be above a hundred gold. If the texture is ordinary, the craftsmanship is average, and it is common in the ordinary market, the price may be tens of gold. If it is in a situation where supply exceeds demand, although the quality is good, the price may be halved. As for the desolate place, even if the quality is high, the demand is small, and the price is difficult to be high, or only a few gold. However, these are all numbers, and the market conditions are ever-changing, so it is difficult to determine the range of its price. Only by scrutinizing the market can we obtain its approximate price.

The common Quality Standards for a certain product are not fully described in "Tiangong Kaiwu", but there are many lessons to be learned from the investigation of ancient craftsmanship.
In terms of materials, "Tiangong Kaiwu" mentions the importance of material selection to quality in many places. For example, the bell, "where the bell is cast, the high is copper, and the lower is iron", this means that the material is selected according to the use, and the product can be solid and durable. Common products should also be selected accordingly, such as wood making, hardwood should be suitable for load-bearing areas, and softwood should be suitable for decoration. This is the basis of material standards.
Re-discussion of craftsmanship, the book describes various craftsmanship techniques in detail. Such as papermaking, through bamboo bleaching ponds, boiling and foot fire and other processes. Product quality depends on fine craftsmanship. Common products are made, and each step needs to be accurate. Such as ceramic firing, improper control of heat and time will cause cracking, deformation, etc. Strictly follow the process specifications, which is the key to quality.
Dimensions and specifications, the product also needs to be fit. The appliances involved in "Tiangong Kaiwu" have corresponding size requirements. Such as the production of cars and boats, the size is related to practicality and safety. Common products, either for daily use or for other purposes, if the size is not accurate, it will affect the use. Therefore, the appropriate size specification is also one of the Quality Standards.
In terms of appearance, although the ancient times did not have the strict aesthetics of today, it still seeks to be regular and beautiful. Such as fabric weaving, it needs to be clear and orderly. Common products should have no obvious flaws in appearance and uniform color, which can enhance the appearance and value of the product.
In terms of performance, the product should have corresponding functions. Such as agricultural tools need to be sharp and durable, which is conducive to farming. Common products meet the performance standards and meet the needs of use before they are qualified.
To sum up, the Quality Standards of common products need to be paid attention to in terms of material, process, size, appearance and performance. Follow the ancient principles to promote the improvement of product quality today.