3 Iodoanisole

3-Saltpeter is also fire nitrate. Its chemical properties are unique and it has strong oxidizing properties. This property is reflected in many aspects.
When it encounters combustible things, it is very easy to cause combustion. As in the production of fireworks in the past, saltpeter is often the key ingredient. Gunpowder can be prepared by mixing sulfur, charcoal and saltpeter in a specific ratio. The strong oxidation of saltpeter plays a major role. In the combustion reaction, it can provide a large amount of oxygen for combustible materials, making the combustion rapid and violent, making gunpowder have strong explosive power and is widely used in military, engineering and other fields.
Furthermore, saltpeter is more oxidized in an acidic environment. If there are active metals, it is easy to redox with them. During this reaction, the valence of nitrogen in saltpeter decreases, while the valence of metal elements increases.
In solution, saltpeter can react with some reducing agents. Its oxidizability causes the reducing agent to be oxidized, and itself is reduced to form nitrogen-containing compounds of different valences, depending on the reaction conditions and the type and amount of reducing agents. Or form nitric oxide, or nitrogen dioxide, etc.
In addition, the stability of saltpeter also has characteristics. Under normal temperature, it is relatively stable, but when heated to a certain extent, it will decompose and release oxygen. This property is also related to its oxidizability, and the decomposed oxygen can also support the combustion of surrounding combustible substances. From this perspective, the strong oxidation of 3-saltpeter is its important chemical property, which has a profound impact on many chemical reaction processes and phenomena. It is widely used in many fields in ancient and modern times, and it is actually quite characteristic of chemical substances.

3 - The common synthesis method of Pinellia is generally good.
One is the method of chemical synthesis. With general raw materials, delicate chemical reactions, follow a specific reverse path, so that the molecules can be rearranged and combined to obtain the chemical ingredients required for Pinellia. For example, take the appropriate chemical compounds, and under the action of specific degrees, forces and catalysts, induce nuclear substitution, addition and other reactions, and gradually build the molecular skeleton of the active ingredients of Pinellia. The main advantage of this method is that it can precisely control the reverse process and obtain high-quality objects, but it is also necessary to refine the principle of chemical reaction, and the raw materials and reaction parts or environment have unfavorable effects.
The second method of biosynthesis. The biosynthetic ability of microorganisms or plant cells can be used to obtain the ingredients of Pinellia. Microorganisms with the ability to synthesize components, such as some fungi and fungi, can be used to synthesize the basic components of Pinellia, and to promote their efficient synthesis of Pinellia. Or use plant cultivation techniques to produce a large number of required ingredients in the biological reactor by using the starting materials of Pinellia or Pinellia, which can be differentiated and multiplied. This method can ensure the color of the plant, and can mould the natural synthesis process of the organism, but the generation of the organism can be controlled. In order to increase the amount, in-depth research on biosynthesis is required.
The third is the method of semi-synthesis. First extract some of the precursors of Pinellia from natural sources, and these precursors are easy to be obtained in nature and the content is relatively rich. In other words, by chemical or biological means, we can repair the front ingredients to make them into the active ingredients of Pinellia pinelata. In this way, the biological activity of natural ingredients can be combined with the activity of synthesis, which can reduce the degree of synthesis and improve the efficiency of production. However, it is necessary to know a lot about the effective repair methods before finding the right ingredients.

3-Bromo-pyridineformamide has many wonders in organic synthesis. It can be used as a key intermediate and is of great value in the creation of various drugs, agrochemicals and functional materials.
In the field of drug synthesis, with its unique chemical structure and reactivity, 3-bromo-pyridineformamide can participate in a variety of reactions to build biologically active molecular structures. For example, by coupling reactions with other nitrogenous, oxygenated or sulfur-containing compounds, new drug molecules can be synthesized that demonstrate therapeutic potential for specific diseases. Some drugs used to treat nervous system diseases or cardiovascular diseases may be synthesized with 3-bromopyridine formamide as the starting material or key intermediate, and complex and biologically active structures can be constructed through multi-step reactions to achieve disease intervention and treatment.
In the field of agrochemical creation, 3-bromopyridine formamide also plays an important role. It can be used as an important building block for the synthesis of high-efficiency insecticides, fungicides or herbicides. Through rational design and modification, the synthesized compounds can be endowed with specific biological activities, making them highly selective and highly lethal to crop pests and bacteria, while reducing the impact on the environment and toxicity to non-target organisms, providing strong support for sustainable agricultural development.
In the synthesis of functional materials, 3-bromo-pyridyl formamide can be introduced into polymers or small organic molecules to endow materials with unique electrical, optical or thermal properties. For example, integrating it into photovoltaic material systems may improve the charge transfer efficiency and fluorescence emission characteristics of materials, etc., contributing to the development of photovoltaic devices such as organic Light Emitting Diodes (OLEDs) and solar cells. In the field of organic synthesis, 3-bromopyridine formamide is like a cornerstone, providing the possibility for the creation of many compounds, and has broad application prospects and unlimited development potential in many fields such as medicine, agriculture and materials science.

3- The object of the armor is rational, and it is strange. This body is hard armor, and its armor is always solid. If it is made of gold and stone, the blade is hard. And the armor is covered with special flowers, which contain mysterious secrets, like the wonderful meaning of creation in heaven and earth.
Its shape is big, and it is hard to move, and the ground is full of mountains, which is enough to reduce its strength. The limbs are thick and powerful, like a giant pillar in the sky, and there are walls on the ground. It is easy to overturn boulders and cross obstacles.
Furthermore, this skin also has characteristics. It is thick and thick, and can withstand frost, rain and snow, and the general invasion of water and fire. Even if the fire is on the body, the short skin is also the root; the cold is also like the sun, so it can be broken.
His eyes are sharp, able to see into the subtle, and in the dark night, he can also clearly identify things, just like the light, which is not illuminated. His ears are sensitive, even if he is subtle, he can also detect it. If he blows grass, he will immediately be alerted.
And his organs, which are also extraordinary. The heart is powerful, jumping like thunder, containing majestic power; the lungs are highly functional, breathing and vomiting, capable of swallowing and swallowing the essence of heaven and earth, as if it is in harmony with nature.
In this way, 3-how strange is the rationality of things? It is a rare thing in heaven and earth, which makes people stop and hide secrets, waiting for the world to investigate.

"Tiangong Kaiwu" states that camphor pears (now known as avocados) are occasionally grown in Lingnan. Its storage conditions are quite exquisite.
Camphor pears like to be warm and humid, but after picking, they are perishable and difficult to store. If you want to keep them for a longer time, you need to choose a cool and dry place. Do not expose them to the hot sun, otherwise their meat is perishable and the color and taste will change.
In ordinary homes, if it is only for short-term storage, it can be placed in a bamboo basket, hung in a ventilated place, and slowed down by the flowing wind. If you want to store them for a long time, the ancients may have used pottery jars to hide them. Wash and dry the pottery pot first, lay dry straw or linen cloth inside, and then place the camphor pear in it, then seal the mouth of the pot with straw, and bury it in the shady soil, so that it may be stored for a while.
However, the method at that time was difficult to keep the camphor pear intact for a long time. Its essence is still a delicate fruit, and it gradually loses its freshness a few days after picking. In later generations, due to the advance of storage and transportation techniques, camphor pears have been more widely spread and known to everyone, but their storage still needs to follow suitable conditions to ensure their quality.