4-(3-Methyl-5-Oxo-4,5-Dihydro-1H-Pyrazol-1-Yl)Benzenesulfonic Acid

4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid, which is widely used in today's chemical field.
In the way of pharmaceutical research and development, it is often a key intermediate. In the ancient saying, it is just like the key ingredient in the tripod, and it is difficult to make a good meal without it. The synthesis path of many drugs depends on its participation. Due to its unique structure, it can be used to build drug active parts, such as drugs targeting specific proteins. This substance can be embedded in the molecular structure of the drug like a precise tenon and mortise, so that the drug can accurately act on the target and improve the efficacy.
It also has important applications in the field of materials science. It can be used as a modifier for functional materials, just like putting a special coat on the material. The modified material may have unique electrical and optical properties. For example, in some photoelectric materials, adding this substance can adjust the charge transfer and luminescence properties of the material, so that the material can play a better role in photoelectric devices such as Light Emitting Diode, solar cells and other fields.
In the path of chemical research, it is an important building block for organic synthesis. Chemists are like craftsmen, using it as a cornerstone to build a building of complex organic molecules. It can be used to participate in various chemical reactions, expand the structural diversity of molecules, and lay the foundation for exploring the properties and applications of new compounds. Its importance in organic synthesis is as indispensable as that of masonry in tall buildings.

4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid, an organic compound. Its chemical properties are unique, containing sulfonic acid groups and pyrazole ring structures.
The sulfonic acid group endows the compound with strong acidic properties, which are easy to ionize in water and exhibit acidic properties. It can neutralize with bases to generate corresponding salts. This property allows it to act as an acidic catalyst in some chemical reactions, speeding up the reaction process.
The pyrazole ring structure adds stability and conjugation effect to the compound. The nitrogen atom in the pyrazole ring has lone pair electrons, which can participate in coordination and form complexes with metal ions, etc., which has potential application value in the field of materials science and coordination chemistry.
From the perspective of physical properties, the compound has a certain water solubility due to the hydrophilicity of the sulfonic acid group. Its molecules can interact with hydrogen bonds and other physical parameters such as its melting point and boiling point.
In chemical reactions, the position and properties of the substituents on the benzene ring can affect the activity and check point selectivity of the electrophilic substitution reaction. The existence of the pyrazole ring may also affect the electron cloud density distribution of the benzene ring, which in turn affects the reactivity of the whole molecule. For example, in nucleophilic substitution reactions, the pyrazole ring may change the difficulty of the reaction and the selectivity of the product due to conjugation and electronic effects. The unique chemical properties of this compound make it have broad research and application prospects in many fields such as medicinal chemistry and organic synthesis.

The preparation of 4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid is quite exquisite and requires fine steps.
Bear the brunt and prepare the materials used. The raw materials need to be pure and of high quality, such as specific benzenesulfonic acid derivatives and 3-methyl-5-oxo-4,5-dihydro-1H-pyrazole, which are all key materials. In addition, suitable solvents and catalysts are also indispensable, and their quality is related to the preparation effect.
Then, in a suitable reaction vessel, according to the precise ratio, the benzenesulfonic acid derivative is mixed with 3-methyl-5-oxo-4,5-dihydro-1H-pyrazole. In this process, the proportion must be accurate, slightly deviated, or the product may be impure. Then, slowly add a solvent to make the material evenly dispersed to create a suitable reaction environment.
Furthermore, add an appropriate amount of catalyst to promote the progress of the reaction. When the amount of catalyst is strictly controlled, the reaction will be too fast and prone to side reactions; at least, the reaction will be slow and time-consuming. After adding, carefully adjust the reaction temperature and time. The temperature needs to be constant in a specific range, or fine-tuned according to the reaction process, and the time needs to be precisely controlled, neither too short to cause the reaction to be incomplete, nor too long to damage the product.
After the reaction is completed, it needs to go through the process of separation and purification. Often by filtration, extraction, crystallization, etc. to remove its impurities to obtain pure 4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid. When filtering, the pore size of the filter paper should be adapted to block impurities and pass the product; the reagents used for extraction should have good solubility to the product and easy separation from impurities; the crystallization process, temperature, stirring rate and other factors will affect the purity and morphology of the crystal.
The entire preparation process requires careful and interlocking steps. With a little carelessness, it is difficult to obtain the ideal product. Those who prepare it need to have exquisite skills and complete patience.

I have searched all over the market, but I have not found the exact price range of 4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid. Due to the specific use and difficulty in preparation, this compound is rarely circulated in ordinary markets, so it is difficult to find its price.
If you want to know its price, you can go to a special chemical raw material trading place and chemical reagent supplier to inquire. Nowadays, the Internet is convenient, and there are many chemical e-commerce platforms. You can log in to such platforms to search for this compound, check the prices marked by various merchants, and then understand its approximate price range.
Furthermore, the price of this compound is also affected by many factors. Its purity is one of the keys, the higher the purity, the higher the price; the batch size also affects, large purchases, merchants may give discounts, unit price or drop; in addition, the state of market supply and demand, the level of preparation costs, can make the price fluctuate. Therefore, in order to obtain an accurate price, it is necessary to discuss with relevant suppliers and comprehensively consider all factors before obtaining it.

4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid is a special chemical substance, and there are many points to pay attention to when storing.
First, the temperature and humidity of the storage environment are critical. This substance should be stored in a cool, dry place to prevent high temperature and humidity. High temperature can easily cause its chemical properties to change, or cause decomposition and other conditions; humid environment may cause the substance to absorb moisture, affecting its purity and stability. Therefore, choose a place with stable temperature and controlled humidity, such as a warehouse with air conditioning and dehumidification equipment.
Second, avoiding light should not be ignored. Light may promote photochemical reactions, resulting in structural changes and damaged performance. Therefore, when storing, use a dark container or place it in an area without direct light.
Third, the storage place should be well ventilated. Good ventilation can prevent the accumulation of harmful gases and reduce safety risks. If the substance decomposes to produce harmful gases, it can be discharged in time with good ventilation to ensure the safety of the storage environment.
Fourth, isolation from other substances is extremely important. This chemical may react with other substances, so it should be avoided with oxidizing and reducing substances, as well as acids and alkalis. It needs to be classified and stored according to its chemical properties to prevent interaction.
Fifth, the material of the storage container is also exquisite. Materials that do not react with the substance, such as specific plastic or glass containers, should be selected to ensure that the substance is not affected by the container during storage and maintain its chemical stability.
In short, to properly store 4- (3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl) benzenesulfonic acid, many factors such as temperature, humidity, light, ventilation, material isolation and container material must be considered to ensure its quality and safety.