2 Iodo 5 Nitropyrimidine

The main use of the silkworm in "Tiangong Kaiwu" is related to the industry of silk weaving. The slug is also a silkworm. The use of silkworms is first in spinning silk. Silkworms grow from larvae when they eat mulberry, and when they are mature, they spin silk to make cocoons.
The silk spit by the silkworm is soft and tough, which is the foundation of the silk weaving industry. Silk is extracted by the method of reeling silk, and then it can be woven into exquisite silk by the hands of textile craftsmen. Silk is delicate in texture and gorgeous in luster. It is not only used as a material for clothing, but also as a valuable gift. It is often used in diplomatic relations, rewards and other occasions. Since ancient times, the silk of China has been famous far and wide. It is exported to the Western Regions and even European countries through the Silk Road. It occupies an important position in international trade and brings rich wealth to the country.
Furthermore, the leftover material after the silk reeling of the silkworm cocoon is not useless. It can be used to make silk cotton, which is gentle and warm. It is often used as a filler for winter clothes and bedding, which can withstand the cold winter and make people warm and comfortable.
Silkworm chrysalis are also valuable. Silkworm chrysalis are rich in nutrients and can be used as food. They taste delicious and are quite popular in folk diets. And after processing, silkworm chrysalis can also be used as medicinal materials, which have certain medicinal effects and are used in traditional medicine.
From this perspective, bulls play an important role in silk weaving, people's livelihood, trade, diet, medicine, and many other aspects, and are actually key creatures related to the national economy and people's livelihood.

2-% E7% A2% 98 Mentioned 5-%E7%A1%9D%E5%9F%BA%E5%98%A7%E5%95%B6, this is a traditional Chinese medicine prescription. Although its synthesis method is not detailed in books such as "Tiangong Kaiwu", it can be combined with traditional Chinese medicine pharmacology and ancient records in the following ways.
First, the method of material selection. High-quality medicinal materials need to be selected. Rehmannia Rehmannia, it is better to take Huaiqing Rehmannia Rehmannia, which is produced in the ground and has mellow medicinal power. Digging in late spring and early summer, washing and drying, this is the base material. Scrophulariae should be selected from Zhejiang Scrophulariae, dug after the beginning of winter, sliced for later use. Ophiopogon is taken from Hang Ophiopogon, harvested in summer, and dried in the sun. All medicines are selected to lay the foundation for synthesis.
Second, the Rehmannia needs nine steams and nine suns. Mix well with rice wine for each steaming, so that the wine enters the ground yellow and black as lacquer, and the taste is sweet and sweet, increasing its yin-nourishing power. After slicing Scrophulariae, infiltrate with salt water, stir-fry slowly over low heat, and introduce medicine down to enhance the effect of clearing heat and nourishing yin. After removing the heart of Ophiopogon ophiopogon, stir-fry slightly to make its medicinal properties peaceful. Proper processing, the medicine can be used to the best of its ability.
Third, the method of compatibility. According to a certain proportion of compatibility, Rehmannia is the main one, and the quantity is large to nourish yin and fill in essence; Scrophulariae and Ophiopogon ophiopogon are supplemented to help Rehmannia rehmannia nourish yin and moisturize dry Boil first, then simmer slowly, so that the ingredients of the medicine are fully dissolved and fused into one. When the concoction is thick, remove the residue and take the liquid, cool the ointment, or make a pill, which is easy to take.
Synthetic 5-%E7%A1%9D%E5%9F%BA%E5%98%A7%E5%95%B6, material selection, processing, compatibility are all important, follow the ancient method to get good medicine to treat yin deficiency.

Serotonin (5-HT), also known as serotonin, is a crucial neurotransmitter in the human body and plays a pivotal role in the nervous system and many physiological functions of the body. It has the following physical properties:
- ** Traits **: Serotonin is white to light yellow powder at room temperature, and it is pure and delicate. This form is convenient for processing and operation in various experiments and application scenarios.
- ** Solubility **: This substance is slightly soluble in water and can only achieve a certain degree of dissolution in water, just like a little gravel thrown into a stream, only partially soluble with water; soluble in ethanol, the dissolution in ethanol is better than water, just like salt is more easily dissipated in warm water; but insoluble in chloroform and ether, in which 5-hydroxytryptamine is like being in an incompatible foreign land and cannot be mixed with it. This dissolution property is closely related to its molecular structure and polarity, which determines its dispersion and existence in different solvent environments.
- ** Stability **: Serotonin is relatively stable in the air, just like a strong fortress. It is difficult for the flow and changes of the outside air to easily affect it, so it needs to be protected from direct light. Strong light seems to have erosive power. Under direct exposure, the structure of serotonin is easily damaged, causing it to lose its original biological activity and chemical properties. Like a delicate flower, excessive exposure to sunlight will wither and wither.
- ** Melting point **: Its melting point is about 167-168 ° C. When the temperature gradually rises to this range, serotonin slowly melts from solid to liquid, completing the transformation of material form. Melting point, as an important physical parameter of substances, is of key guiding significance for their purification, identification and related applications. It is just like a precise coordinate, indicating the direction for the research and use of serotonin.

The chemical properties of 5-hydroxytryptamine are acidic, alkaline, redox, nucleophilic, etc.
V-hydroxytryptamine is weakly basic, due to the presence of amino groups. The amino group has a lone pair of electrons and can be combined with protons. In an acidic environment, it is easy to form ammonium ions. This property is related to its existence in the body and physiological functions. Such as in the stomach acid environment, or in the reaction with acid to form salts, it affects its absorption and transport.
It has redox properties. Among 5-hydroxytryptamine, phenolic hydroxyl groups are more active and easy to be oxidized. In an aerobic environment and under the action of specific enzymes, phenolic hydroxyl groups can be oxidized to quinone structures. This oxidation process may involve the generation of free radicals and the antioxidant defense system in the body. If excessive oxidation, it may cause the destruction of serotonin structure, loss of physiological activity, and free radicals produced or damage cells. On the other hand, under specific conditions, serotonin can also exhibit reductivity, participate in the redox reaction in the body, and maintain the redox balance in the body.
Furthermore, serotonin has nucleophilic properties. Both amino groups and phenolic hydroxyl groups can be nucleophilic check points, and can undergo nucleophilic reactions with electrophilic reagents. Therefore, it is crucial to participate in the processes of biosynthesis, metabolism, and binding to receptors in vivo. For example, in the biosynthetic pathway, or by means of nucleophilic reactions to bind to other molecules to form complex biological molecules; when interacting with receptors, or by means of nucleophilic check points to bind to the electrophilic region of receptors, cell signaling is triggered to achieve physiological regulation.
The acid-base, redox and nucleophilic properties of serotonin are of great significance in their physiological functions and metabolism in vivo. These chemical properties are interrelated and coconstitute the complex behavior of serotonin in life activities.

In Wuguan City, the price of Ganoderma lucidum spore powder often varies due to factors such as quality, origin, and brand.
The best ones are taken from Ganoderma lucidum produced in Youdi, and the processing is fine, the craftsmanship is high, and the price is quite high. This kind of Ganoderma lucidum spore powder may reach thousands of yuan per catty. Gai is popular because of its good medicinal effect and abundant nutrition, so the price is high.
The quality of the middle products is not bad, the origin and craftsmanship are in the middle, and the price is around 1,000 yuan per catty. This kind of spore powder can meet the needs of everyone's usual health care and is a common choice in the market.
As for the low-quality products, either due to poor origin or crude processing, the price is low, or only a few hundred yuan per catty. Although it also has the effect of Ganoderma lucidum spore powder, it is far from the top and middle products.
The price of Ganoderma lucidum spore powder in the market is hundreds of yuan per catty, and the high can reach thousands of yuan per catty. Buyers should choose it carefully according to their own needs and resources. They should not only ask for low price, but also ignore the need for quality.