Isoquinoline, 3,4-dihydro-6,7-di(methoxy-d3)-, hydrochloride (1:1)

The chemical structure of this product is crucial to its performance and characteristics. Although "Tiangong Kaiwu" does not directly describe the specific chemical structure of this product, in various process descriptions, the ancient people's cognition of material properties and changes can be glimpsed, or it can provide clues for exploring its chemical structure.
Although ancient times did not have the means of accurately analyzing the material structure like modern chemistry, the ancient people had profound insights into many substances through long-term practice and observation. For example, in metallurgy, it is known that different metal proportions can form alloys with different characteristics. In ceramic firing, the influence of raw materials and heat on texture and color is also known.
For this product, its chemical structure can be inferred from the selection of raw materials, preparation process, and use performance. If the raw material contains specific elements, after specific treatment, or a chemical reaction occurs, a specific structure is formed. For example, in alchemy, dansa is smelted and mercury is precipitated from it. This process involves changes in the structure of the substance.
In the preparation process, factors such as temperature, time, and additives can cause the chemical structure of the product to be different. High temperature may cause molecular rearrangement and chemical bond breakage; additives may participate in the reaction and change the final structure.
Its use performance can also reflect the chemical structure characteristics. If it has good corrosion resistance, or because of its stable structure, the chemical bond is firm; if it has special optical properties, or is related to the molecular energy level structure.
Although it is difficult to know the exact chemical structure of this product, we can use the ideas of "Tiangong Kaiwu" to explore its raw materials, processes, properties, etc., or gain insight into its chemical structure, appreciate the wisdom of the ancients in material research, and provide a different perspective for modern research.

What is the main use of this product? "Tiangong Kaiwu" is an ancient scientific and technological book in our country, which has many records of the use of various utensils. Today, it answers this question in the style of ancient classical Chinese.
Cover this product, which has a wide range of uses. At the daily level, it can help people's daily livelihood. For example, in ordinary homes, use it as a utensil, or for drinking and living, or for housework, making life more convenient. For example, it can be used as a cooking utensil, on the stove, to help people cook delicious food, so that the ingredients can be processed and turned into delicious food for the family to enjoy.
It also plays a key role in labor. When craftsmen are working, this product may be their right-hand man. Woodworking requires its assistance to fix the wood in order to carefully carve and create exquisite woodware; masons build walls and rely on their measurement and calibration to ensure that the walls are straight and sturdy. It is indispensable in all kinds of crafts, which can improve labor efficiency and ensure the quality of projects.
Furthermore, in the field of trade and circulation, this product also has a place. Because of its diverse uses and wide demand, it has become a popular product in market transactions. Merchants sell and exchange with each other, so that it circulates in various places, not only driving business prosperity, but also enabling people from different regions to benefit from it. Or in town markets, or in rural ruins, it can be seen, becoming a link between producers and consumers, and promoting economic development. Overall, this product plays an important role in many aspects of people's lives, labor production, and business transactions, and is an indispensable factor for the operation of society.

The physical nature of this product is related to its texture, characteristics and many other aspects. Its quality is firm, like the solidification of gold and stone, which can be honed over time without damage, and can bear heavy objects without deformation. It is suitable for many occasions that need to be sturdy. Its temperature is moderate and cool, and it is free from the heat of inflammation and heat to touch, nor the cold of winter. It is suitable for the sense of the human body. When used, it can make people feel comfortable.
Looking at its color, it is pure and free of complexity, or if it is the white of snow, or like the blue of a pool, it has a unique beauty, which is comparable to non-vulgar things. Its texture is delicate, like the ingenious painting of heaven, with traces of strands, all containing the wonders of nature, and it seems to have a smart state. It is loved when viewed.
Furthermore, it is light and easy to carry. Although it is strong, it has a suitable weight, so that people will not be tired of moving. And it is resistant to corrosion, not afraid of wind and rain erosion, and can be well preserved over time. If placed outdoors, it can also keep its original appearance through rain, dew and frost, without losing its usefulness.
The good physical properties of this product are actually the fruit of the combination of heaven and manpower. It combines the characteristics of toughness, fitness, beauty, convenience and resistance. Among all utensils, it can be called the top grade, which can bring users many conveniences and wonderful experiences, and can show its unique value in various occasions.

The production method of this item is related to the inheritance of skills and the wonders of creation.
Viewing "Tiangong Kaiwu", which discusses all kinds of production methods, all follow the principles of nature, according to the characteristics of things.
Taking the casting tool as an example, you must first choose good materials, observe its texture, and distinguish its advantages and disadvantages. Then, according to the shape of the cast object, make a mold. The precision and coarseness of the mold is related to the formation of the object. When casting, the control of the heat is the key. If the fire is fierce, the material is easy to disperse, and if the fire is weak, it is difficult to cast the shape. Craftsmen need to rely on experience and eyesight to observe the color of the fire, and timely add firewood and reduce wages to achieve the best match. The molten material enters the mold, waits for it to cool, and then is polished and trimmed to obtain the product.
Another example is textile. When picking cocoons and reeling silk, first choose the one with a uniform color and a full cocoon shape. When reeling silk, the water temperature and techniques are all exquisite. If the water temperature is too high, the silk is easy to break; if the water temperature is too low, the silk is difficult to extract. The silk is reeled, the meridian silk, and the warping process make it orderly. Then it is woven on the machine. The craftsman designs according to the pattern, shuttles the leads, and moves his hands like flying. In the meantime, the control of the tension of the silk thread and the arrangement of the density are all related to the quality of the fabric.
The method of making pottery, the choice of soil is also the first. The soil needs to be When the billet is molded, it is either pan-built or billet-drawn, all of which show the craftsman's skills. After the billet is completed, it is fired in the kiln. The temperature curve of the kiln is complex, and the temperature requirements are different at different stages. And the atmosphere of the kiln is also affected. The change of the atmosphere of oxidation and reduction makes the pottery different in color. After leaving the kiln, it is either glazed or engraved and decorated, and then it becomes a fine pottery.
Such production methods rely on the experience and wisdom passed down by craftsmen from generation to generation. Using natural things to create practical and beautiful utensils shows the ability of ancient man-made things.

Looking at this product, what is the price of the market? This is what everyone thinks. However, the price is determined, and it cannot be determined by one word, and it involves various factors.
If you say its materials, the price of high-quality materials will be high, and the price of poor materials will be low. High-quality materials are not easy to harvest, and the production is also refined, and their price will be high; the second is the opposite.
The fineness of the workmanship is also related to the price. Crafty craftsmen refine, time-consuming and laborious, and every process is perfect, and the price will be considerable; if the workmanship is sparse, although the speed and quality are insufficient, the price will not be high.
Furthermore, the supply and demand of the city is the main reason for the price. There are many people who want it, but there are few people who supply it, and the price will go up; if the supply exceeds the demand, the price will drop.
It also has the reputation of a brand, and it also affects the price. Famous brands, with high trust and respect, everyone believes in their quality, and the price is often higher than others.
According to the current market conditions, the price of this product is about [X] to [X]. However, this is only a rough outline, and the actual price may vary according to time, place, and situation. The market conditions are changeable. Businesspeople should observe the current situation and set prices in an ad hoc manner. Buyers should also review in detail. Those who ask for appropriate prices and high quality.