Mercaptomethyl pyrazine

Podyl methyl carbonyl oxime is a crucial compound in organic synthesis, and its main uses are quite extensive. Although such specific chemical substances are not detailed in "Tiangong Kaiwu", their uses can be roughly described in ancient classical texts as follows:
First, in the field of pharmaceutical synthesis, podyl methyl carbonyl oxime is often used as a key intermediate. Due to the delicacy of medicinal chemistry, many complex molecules with specific pharmacological activities are constructed, and these substances need to be used as starting materials and undergo a series of fine chemical reactions to obtain therapeutic pharmaceutical ingredients. Its unique chemical structure can lead to the introduction and transformation of specific functional groups, which is like the cornerstone of building an exquisite medicinal stone building, laying the foundation for the synthesis of various good medicines for treating diseases.
Second, in the creation of pesticides, poly methyl carbonyl oxime also plays a pivotal role. In today's agricultural development, there is a strong demand for high-efficiency, low-toxicity and environmentally friendly pesticides. This compound can be chemically modified and derived to construct pesticide molecules with excellent insecticidal, bactericidal or herbicidal activities. Through precise molecular design, pesticides can target pests while having little impact on non-target organisms, so as to achieve the purpose of agricultural production and ecological harmony.
Third, in the field of materials science, poly methyl carbonyl oxime can participate in the preparation of special functional materials. Such as some high-performance polymer materials or optical materials, during the synthesis process, this material can be used as a raw material or additive to endow the material with unique physical and chemical properties, such as enhancing the stability of the material, adjusting the optical properties of the material, etc., and then meet the stringent needs of different fields for special materials.
All these, with its unique chemical properties, pol methyl carbonyl oxime has shown value that cannot be ignored in many fields such as medicine, pesticides and materials, promoting technological innovation and progress in various fields.

In "Tiangong Kaiwu", the physical properties of boron-based acetynyl boron-based positive ions are quite wonderful.
Boron-based acetynyl boron-based positive ions have a unique structure and are cleverly combined with boron and carbon. Boron often shows unique properties in various chemicals, and carbon is the cornerstone of the organic world. The two co-constitute this ion, and its characteristics are extraordinary.
In terms of its stability, the ion has certain stability under certain conditions due to the special electron cloud distribution. The lack of electrons of boron atoms is coordinated with the bonding ability of carbon, which makes the internal electronic structure of ions reach a certain balance, unlike ordinary ions, which are easy to decompose or react.
Its electrical properties are also eye-catching. Due to the characteristics of electron movement in the structure, it may exhibit certain conductivity, which may have potential application value in the exploration of some new conductive materials. The tunability of the outer electrons of boron atoms and the conjugate system formed by carbon give ions unique electron conduction paths, which may be expected to be used in the manufacture of miniature electronic components.
Optical properties, the ions can absorb and emit light of a specific frequency due to the uniqueness of the electron transition energy level. When irradiated by a specific wavelength of light, electrons transition between different energy levels, showing special spectral characteristics. This property may be applied in the fields of optical detection, luminescent materials, etc., such as the manufacture of new fluorescent markers for biomedical imaging, and the precise marking of biomolecules with their unique optical signals.
In terms of chemical activity, although there is a certain stability, it will also react when encountering specific strong oxidizing or reducing agents. The difference in electron cloud density between boron and carbon atoms makes different parts of ions have different reactivity to reagents, providing novel reaction check points for organic synthesis chemistry, or can be used to construct complex organic molecular structures.

The genera of differential groups, methyl groups, and amino groups have their own chemical properties.
Hydroxyl groups are formed by removing one electron from the hydroxyl radical of water, and are active. Hydrophilic, due to strong oxygen electronegativity, hydroxyl groups are easy to form hydrogen bonds with other substances. Among alcohols, hydroxyl groups can cause them to have a certain solubility in water. And hydroxyl groups can participate in many reactions, such as esterification with carboxylic acids to form esters and water. In the process of oxidation, primary alcohols can be oxidized to obtain aldehyde, and then to carboxylic acids; secondary alcohols can be oxidized to obtain ketones.
Methyl groups are composed of only one carbon and three hydrogens, which is the simplest alkyl group. Its non-polarity is strong and it is hydrophobic. In organic molecules, methyl groups often cause molecules to be hydrophobic. However, the methyl group is not completely lazy. In specific situations, it can participate in the substitution reaction. For example, in the preparation of halogenated hydrocarbons, the halogen atom can replace the hydrogen on the methyl group. And A has an influence based on the molecular space conformation. Due to its steric resistance effect, it can change the shape of the molecule, which in turn affects the molecular properties.
Amino groups are formed from nitrogen and dihydro. Nitrogen is rich in solitary pairs of electrons and is basic. In aqueous solutions, amino groups can absorb protons and form ammonium ions. In amino acids, amino groups coexist with carboxyl groups, and both amphoteric. And amino groups are very important in biochemistry. During protein synthesis, amino acids are condensed with amino groups and carboxyl groups to form peptide bonds. Many drug molecules contain amino groups, which combine with targets in the body by their alkalinity, showing pharmacological effects.
The three have their own unique chemical properties and are of great significance in various fields such as organic chemistry and biochemistry. They are the foundation for building thousands of material structures and generating rich chemical reactions.

The book "Tiangong Kaiwu" says: "Bonobo lead, which is not found in ancient books, is a famous color in modern times. Its quality is refined with calamine. Calamine, that is, the one that produces bonobo lead mountain, its shape is like sheep liver, with a slight green color, and it is combined with red copper to make brass."
Bonobo lead is zinc, and its production method is to take calamine first. Calamine is rich in mountains, and its color is like sheep liver and slightly green. Calamine is placed in a special furnace, using coal as fuel, and a blast to support combustion, so that the temperature of the furnace rises. Calamine is decomposed by heat, and zinc carbonate is converted to zinc oxide.
At this time, charcoal needs to be added. Charcoal reacts with zinc oxide at high temperatures, capturing oxygen in zinc oxide and reducing zinc. Zinc has a lower boiling point and becomes gaseous at high temperatures, evaporating from the furnace.
In order to collect volatile zinc, the furnace needs to be connected to a condensing device. When gaseous zinc encounters a condensing device, the temperature decreases and it re-condenses into solid zinc, thus obtaining Uranium lead.
Uranium lead is combined with red copper and Uranium lead. The ratio of the two is appropriate. After high temperature smelting, it is fully integrated, and finally brass can be obtained. Brass has better performance than pure copper and has a wide range of uses. It can be used to make various appliances and is of great value in life and craftsmanship. This method of Uranium lead production is the crystallization of ancient wisdom and promotes the progress of metal smelting.

In terms of the quality of the things in the market, the quality is different because of the place, and the treasures of the city are especially rare. As far as the zibi is concerned, the ancient importance is important, and its value can be compared with those that are not ordinary.
However, in the past, there is also a fixed value. Because of its rarity, or because of the importance of the court, and the heavy weapon of the sect's sacrifice, it is not easy to be used in the market. If we recommend the quality of the city, we need to consider the ancient pearl trading, and the prosperity and value of the market.
In the past, pearl trading was mostly in the family, and it was mostly based on barter, and it was rare to measure it by the price. However, it is occasionally mentioned that the price of the jade is also due to the long history of the generation, and the system is not good.
Today, according to common sense, the price of the jade is not only carved with beautiful jade, but also has a special cultural and historical significance. If it is placed in the ancient city, its price will be higher than that of the ordinary beautiful jade. Therefore, it is not easy to determine the quality of its market, and it can be estimated with a rough estimate, or the value of a hundred to a thousand dollars.