Benzo[b]thiophene-3-carboxamide, 2-amino-4,5,6,7-tetrahydro-

The chemical structure of this product is quite unique. Its molecular structure is precise and orderly, just like an artifact made by heaven. The atoms are connected in a specific bonding way, just like ancient delicate mechanisms, interlocking to build a stable and complex system.
The arrangement of some functional groups is unique, just like the stars in their respective positions in the sky, but they echo each other. These functional groups give the product special chemical activity and physical properties, or make the product have unique reactivity, emerging in various chemical reactions; or make the product have special solubility and stability, showing unique properties in different environments.
Furthermore, its spatial configuration cannot be ignored. The structure of three-dimensional space is like a delicate pavilion, in which atoms and groups are in their respective positions, and the interaction and influence in space create a variety of product characteristics. Or due to the effect of steric resistance, the occurrence of certain reactions is restricted; or due to special spatial arrangement, specific molecular interactions are promoted, so that the product presents excellent functions.
The symmetry and asymmetry of its chemical structure are also subtle. The appropriate symmetry gives the product a certain stability and regularity, while the asymmetric part adds its unique chemical and physical behavior, just like the ingenious variation in the music, making the product characteristics more diverse. This unique chemical structure lays a solid foundation for the application of the product in many fields, like opening the door to different wonderful worlds.

"Tiangong Kaiwu" says: "All ammonia genera, including tetrahydrofuran [b] pyrrole, are widely used in the field of chemical industry. Among them, the third isomer of this substance often exists in the synthesis path of ethylene blue. Ethylene blue has important positions in the dyeing and weaving industry and analysis.
In the dyeing and weaving industry, ethylene blue is a commonly used dye. Its deep color and good fastness can make the fabric color lasting, so it is widely used in the dyeing process of cotton, linen, silk and other fabrics.
In the study of analysis, ethylene blue can be used as a redox indicator. Due to its significant color change under different redox potentials, it is convenient to observe the process and end point of the reaction, providing accurate guidance for chemical analysis.
In summary, No. 3 ethylene blue is an indispensable material in the field of dyeing, weaving and analysis. Due to its unique chemical properties, it can play its role in both industrial and academic fields, assisting in many practical applications and research explorations.

In today's product synthesis, there are many key steps, none of which are indispensable, which are related to the success or failure of the product.
The first is the selection of raw materials, which is the foundation. The quality of raw materials, such as fine gold and beautiful jade, directly determines the start of synthesis. It is necessary to carefully observe the source of raw materials, verify their purity, and examine their characteristics. If the raw materials are defective, the subsequent steps are futile, such as building a house on sand, the foundation is unstable, and the building is difficult to build.
Then the reaction conditions are controlled, which is the core. Temperature, pressure, catalyst, etc. are all like the laws of an orchestra and need to be precisely adjusted. If the temperature is one point higher, it will pass, and if it is one degree lower, it will be less than that, and so will the pressure. The catalyst is also crucial, such as the boat in the river, to help the reaction move forward smoothly. If it is missing, the reaction will be slow or the direction will be deviated.
Furthermore, separation and purification are the steps of purification. After the reaction is completed, the product may be mixed with impurities. If it is not finely separated, it will not be pure. If gold is panning in the sand, it is necessary to remove the sand and retain gold in an appropriate way to obtain a pure product before it can show its original properties.
Monitoring of the synthesis process cannot be ignored. Like the helmsman of a ship, he can observe the progress at any time, observe the degree and rate of reaction. In case of deviation, adjust it immediately to ensure that the synthesis road is smooth and reach the expected goal.
Each step is interlocking, such as the nodes of the chain are connected, and the negligence of any link may lead to the failure of the synthesis. Only by careful step by step and careful attention everywhere can we become a high-quality product.

"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty, and the physical properties of many substances are detailed in the book. Today's discussion of ethane, which is a simple organic matter of alkanes, although "Tiangong Kaiwu" does not directly mention ethane, according to today's chemical knowledge, its physical properties can be described as follows:
First, look at its physical state and odor. Under normal temperature and pressure, ethane is gaseous, colorless and has a weak hydrocarbon-specific odor. Although this odor is light, it can be perceived by humans in a specific environment.
Second, the density of ethane is discussed. The density of ethane is less than that of air, about 1.356 kg/m ³ (standard condition). Therefore, if ethane leaks in the air, its gas will spread upward.
Third, it is related to the solubility of ethane. Ethane is extremely insoluble in water, because ethane is a non-polar molecule, while water is a polar molecule. According to the principle of "similar miscibility", the two are insoluble. However, ethane is soluble in some organic solvents, such as ether, chloroform and other non-polar or weakly polar organic solvents.
Fourth, talk about the melting boiling point of ethane. The melting point of ethane is -183.3 ° C, the boiling point is -88.6 ° C, and the melting boiling point is low. This is because the intermolecular force of ethane is mainly weak van der Waals force, so that it only needs to absorb less energy, and the intermolecular can overcome this force, so as to achieve the transformation of the state of matter.
In summary, ethane is gaseous at room temperature and pressure, and has the physical properties of colorless and odorless, less dense than air, insoluble in water, and low melting and boiling point.

There are many kinds of nourishing organisms related to this product, and each has its own ability. Although "Tiangong Kaiwu" has not listed in detail, it can be deduced from the things described in it to promote health.
The book mentions silkworms. The mulberry leaves eaten by silkworms have the effect of evacuating wind and heat, clearing liver and eyesight, clearing lungs and moisturizing dryness. If people often drink mulberry leaf tea, it can clear heat and reduce fire, and has a soothing effect on red eyes, swelling and pain, lung heat and cough. And mulberry silkworms spin silk to make clothes, silk fabrics are skin-friendly and breathable, which is beneficial to human skin, can make the skin breathe freely, and indirectly maintain the body.
There are grains. Rice, wheat, millet, millet, and other grains are the foundation of people's livelihood and the foundation of health care. Such as rice, which nourishes the middle and nourishes qi, strengthens the spleen and stomach, and nourishes qi and blood. People eat five grains, which are nourished by heaven and earth, and the spleen and stomach are healthy, so the righteous qi is stored in it, and the evil cannot be dried. Regular consumption of beans, such as soybeans, is rich in nutrients, which can nourish the kidneys and sperm, and has a tonic effect on kidney deficiency such as soreness of the waist and knees and tinnitus.
Looking at oil crops again. The sesame oil squeezed from sesame seeds has a rich aroma, and the sesame seeds themselves are also good for health care. Its taste is sweet, its sex is flat, it nourishes the liver and kidneys, nourishes the essence and blood, and moisturizes the intestines and dryness. S Another example is rapeseed oil extraction. Rapeseed has the effect of promoting blood circulation and removing blood stasis, reducing swelling and detoxifying. Eating rapeseed often is beneficial to the operation of qi and blood in the body.
All the products contained in the book are not directly related to health preservation, but they are all closely related to health preservation. From the nourishment of food to the maintenance of fabrics, they all provide assistance for human health, and together with health preservation, they cannot be ignored.