2,3-pyridinediamine, 4-methyl-

Ethanol, that is, alcohol, its secondary alcohol, flammable, can burn smoothly in air, produce carbon dioxide and water, the reaction formula of combustion is: $C_ {2} H_ {5} OH + 3O_ {2}\ stackrel {ignited }{=\!=\!=} 2CO_ {2} + 3H_ {2} O $.
and ethanol can react with active metals such as sodium to produce sodium ethanol and hydrogen. Take the reaction of ethanol and sodium as an example, the formula is: $2C_ {2} H_ {5} OH + 2Na\ rightarrow 2C_ {2} H_ {5} ONa + H_ {2}\ uparrow $. This reaction is more moderate than the reaction between water and sodium, because the reactivity of hydrogen in ethanol hydroxyl is weaker than that of hydrogen in water.
Ethanol can be oxidized. For example, under the condition of copper or silver catalyst and heating, it can be oxidized by oxygen to acetaldehyde and water. The reaction formula is: $2C_ {2} H_ {5} OH + O_ {2}\ underset {\ triangle} {\ stackrel {Cu or Ag }{=\!=\!=}} 2CH_ {3} CHO + 2H_ {2} O $. In case of strong oxidants such as acidic potassium dichromate solution, ethanol can be oxidized to acetic acid.
Furthermore, ethanol can undergo esterification reaction, and under the condition of concentrated sulfuric acid as a catalyst and heating, it can react with carboxylic acid to produce esters and water. Taking the reaction of ethanol and acetic acid as an example, the formula is: $CH_ {3} COOH + C_ {2} H_ {5} OH\ underset {\ triangle} {\ stackrel {concentrated sulfuric acid }{=\!=\!=}} CH_ {3} COOC_ {2} H_ {5} + H_ {2} O $.
The chemical properties of methyl are that methyl is the electroneutral monovalent group left after the removal of a hydrogen atom from the methane molecule, which has certain stability. Methyl groups can participate in the substitution reaction, and under suitable conditions, they can replace certain atoms or groups in other compounds. For example, under the action of concentrated sulfuric acid, methane reacts with chlorine gas, and one step is to replace chlorine atoms with methyl groups to form chloromethane, $CH_ {4} + Cl_ {2}\ stackrel {light }{=\!=\!=} {3} Cl + HCl $.
Methyl groups can also affect the properties of linked functional groups. For example, in toluene, the activity of the benzene ring is changed due to the presence of methyl groups, and toluene is more prone to substitution reactions than benzene. Under the action of concentrated sulfuric acid, toluene reacts with concentrated nitric acid, and the methyl o-para-position is more easily replaced by nitro groups, resulting in products such as 2,4,6-trinitrotoluene (TNT).

"Amino" is an important functional group in organic chemistry. Its main uses are quite wide, and are listed below:
First, in the field of drug synthesis, the amino group is the most important. Many drug molecules contain this group, because the amino group can interact with specific targets in the body, affecting the activity and efficacy of drugs. For example, common antibiotics, such as penicillin, contain amino groups in their molecular structures. By interacting with enzymes related to bacterial cell wall synthesis, the amino group can inhibit the growth and reproduction of bacteria, providing a powerful weapon for humans to fight bacterial infections.
Second, in the field of materials science, amino groups are also indispensable. If high-performance polymer materials are prepared, the introduction of amino groups can improve the properties of materials. Polyamide materials containing amino groups and carboxyl groups are formed by condensation and polymerization. They have many excellent properties such as high strength, wear resistance, chemical corrosion resistance, etc. They are widely used in engineering plastics, fiber manufacturing and other fields, such as automotive parts, textile fibers, etc., which greatly promote industrial development.
Third, in dye chemistry, amino groups are the key components of dye molecules. Many organic dyes have good dyeing properties due to their amino groups. Amino groups can enhance the affinity between dyes and dyes, so that dyes firmly adhere to the surface of fibers and other substances, showing rich colors and good color fastness, adding color to the textile printing and dyeing industry.
Fourth, in biochemical research, the importance of amino groups cannot be underestimated. Biological macromolecules such as proteins and peptides contain many amino groups, which participate in important life processes such as recognition and signal transduction between biomolecules. Scientists can gain insight into the complex biochemical mechanisms in organisms by studying the properties of amino groups, laying the foundation for the development of life sciences.
In short, amino groups play a key role in many fields such as chemicals, medicine, materials, and biology, and have a profound impact on the development and progress of human society.

The method of preparing glyoxal and methyl is based on the ancient method.
To make glyoxal, acetaldehyde is used as the base and obtained by oxidation. In the past, acetaldehyde was oxidized by air, but a good catalyst was required to control the temperature and pressure. There is also a method of oxidizing ethylene glycol with nitric acid. The concentration and temperature of nitric acid are all related to the yield and purity of the product.
As for the preparation of methyl, halogenated methane and metal reagents are often used. For example, halogenated methane and magnesium are used to make Grignard reagents, which are highly active and can react with many carbonylates to obtain methyl-containing alcohols. Or use halogenated methane and lithium reagents to form an organolithionide, which is also an important agent in organic synthesis.
The process of preparation is to ensure safety. Glyoxal is toxic and flammable. When preparing, avoid open flames and ventilate well to ensure the safety of the operator. The reagents used in the preparation of methyl, such as Grignard's reagent and organolithionide, are highly active and easy to respond to in contact with water and oxygen. They need to be strictly protected in an inert atmosphere, and they should be handled with caution.
Although there are many methods for making glyoxal and methyl, they all need to follow the principles of ancient methods, be precise in controlling the rules and emphasizing safety, and get good results.

The fact that "2% 2C3 - to its two orifices, 4-methyl - in storage and transportation" requires a lot of attention.
The first to bear the brunt is the characteristics of the material. The "2% 2C3" and "4-methyl" materials each have their own unique characteristics. When storing, its chemical properties, stability, etc. must be carefully observed. If "2% 2C3" is volatile, it must be well sealed, cool and dry to prevent it from escaping, causing loss of quantity or causing safety risks. And "4-methyl", if it is flammable, should be stored away from fire and heat sources, and equipped with corresponding fire extinguishing facilities.
When transporting, do not slack off. It is necessary to choose the appropriate means of transportation and packaging according to its characteristics. For example, if "2% 2C3" is liquid and corrosive, the packaging must be strong and anti-leakage, and the transportation vehicle should also have a corrosion-proof lining. For "4-methyl", if it is a dangerous chemical, the transporter must undergo professional training, be familiar with emergency handling methods, strictly abide by relevant regulations during transportation, and regularly check the status of the goods to ensure the safety and smooth transportation.
Furthermore, the environmental conditions for storage and transportation are also critical. The impact of temperature and humidity on the two should not be underestimated. If the temperature is too high, "2% 2C3" or accelerate the reaction, "4-methyl" or there is a risk of increased volatilization; if the humidity is too large, the two may deteriorate due to moisture. Therefore, the storage and transportation tools should be equipped with temperature and humidity control devices to ensure the quality of the materials.
In addition, recording and supervision are also indispensable. During storage, the amount, time, and handlers entering and leaving the warehouse should be recorded in detail for traceability and management. During transportation, the itinerary, stops, and changes in the status of the goods should also be recorded. And relevant departments should strengthen supervision, conduct regular inspections, and take precautions to ensure compliance in all aspects of storage and transportation. In this way, "2% 2C3" and "4-methyl" can be guaranteed to be safe during storage and transportation.

Today, the market prospects for 2-3 ibuprofen and 4-methyl-are quite promising. Ibuprofen is a commonly used antipyretic, analgesic and anti-inflammatory drug, which is widely used in the medical field. Since its inception, it has been favored by doctors and patients because of its accurate efficacy and small side effects.
At the market level, the demand for ibuprofen has grown steadily. First, with the improvement of public health awareness, the demand for relief of daily pain has increased. Common symptoms such as colds and fever, headaches, toothaches, dysmenorrhea, etc., ibuprofen can be effectively dealt with, so its sales in the retail market are considerable. Second, with the development of the medical industry, clinical application scenarios continue to expand, not only for conventional pain treatment, but also in the adjuvant treatment of some inflammatory diseases, further driving its market demand.
As for 4-methyl -, although not specifically referred to, methyl compounds are widely used in medicine, chemical industry and other fields. If it is a pharmaceutical intermediate, with the vigorous development of the pharmaceutical industry, the demand for various intermediates will continue to rise. Its market prospects may be influenced by downstream industries. If downstream pharmaceutical Product Research & Development makes breakthroughs or market demand grows, 4-methyl - as a key raw material, its market will also expand. At the same time, the chemical industry has increased demand for special performance materials. If 4-methyl-can be used to synthesize such materials, it will also usher in a broad market space.
Overall, ibuprofen has a bright future with a mature market foundation and stable demand. Although 4-methyl-is not detailed, based on its potential uses in many fields, if it can meet market demand and seize the opportunity of industrial development, it is also expected to emerge in the market and harvest good development prospects.