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

(4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid has a wide range of uses. In the field of medicine, it is often a key intermediate. The structure of geinpyrazole and benzenesulfonic acid endows the compound with unique pharmacological activities. With this substance, many drugs with specific curative effects can be synthesized, such as anti-inflammatory, antipyretic, and analgesic drugs. In the field of organic synthesis, (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid is also an important cornerstone. Due to its structural properties, it can participate in a variety of chemical reactions, helping to build complex organic molecular structures, providing the possibility for the synthesis of new materials and fine chemicals. In addition, it may play a unique role in the preparation of some functional materials. Or affect the physical and chemical properties of materials, such as improving material stability, solubility, etc., so as to meet the special requirements of different application scenarios for material properties.

The physical properties of (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid are particularly important.
First of all, its appearance is mostly white to light yellow powder, fine and uniform, like fine snow falling at the beginning of winter, delicate and free of impurities. This state is very conducive to its dispersion and reaction in many chemical applications.
When it comes to solubility, it shows good solubility in water, just like ice and snow melting in warm spring, it quickly melts with water to form a uniform solution. However, in organic solvents, such as ethanol, ether, etc., its solubility is inferior, only slightly soluble or insoluble, just like the difficulty of mixing oil and water. This property makes it possible to take advantage of the difference in solvents during separation and purification.
Its melting point is also a key physical property. After rigorous determination, the melting point of this material is in a specific temperature range. This temperature is like a critical node for its morphological transformation. When the ambient temperature reaches this range, the substance will gradually change from solid to liquid, just like a wax torch is heated and melted. This property is of great significance in material processing and quality control.
In addition, density is also a corner of its physical properties. The substance has a specific density, which reflects its mass per unit volume. It is like a scale for measuring the weight of an object. When it comes to accurate measurement and formula modulation, density considerations are indispensable.
And its stability is also worth mentioning. Under normal conditions, this substance is quite stable, can exist safely in the general environment, and does not easily react with surrounding substances. It is like a calm old man who is not surprised. In case of extreme conditions, such as high temperature, strong acid and alkali, its stability may be damaged, and its chemical structure may change.

To prepare (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid, the synthesis method is as follows:
First take an appropriate amount of benzenesulfonic acid derivative, which must have an active group that can react with subsequent reactants. Place it in a clean reaction vessel, which must be able to withstand certain temperature and pressure changes and ensure the tightness of the reaction system.
Take another specific pyrazole compound, which contains the structural unit of 4,5-dihydro-3-methyl-5-oxo-1H-pyrazole. Dissolve the pyrazole compound in a suitable solvent, which must have good solubility to the reactants and do not have side reactions with the reactants.
Then, under stirring, add the solution dissolved with the pyrazole compound slowly dropwise into the reaction vessel containing the benzene sulfonic acid derivative. Stirring can fully contact the reactants, accelerate the reaction rate, and make the reaction more uniform. The drip rate should be moderate, too fast or too slow may affect the process of the reaction and the purity of the product.
After the drip addition is completed, gradually increase the temperature of the reaction system. The heating process needs to be carefully controlled. According to the characteristics of the reaction and the required reaction conditions, the temperature should be raised to a specific value and maintained for a period of time to enable the reaction to proceed fully. During this period, close attention should be paid to the changes of the reaction system, such as color and state.
After the reaction is completed, the reaction products are separated and purified. Methods such as filtration, extraction, and recrystallization can be used. Filtration can remove insoluble impurities in the reaction system; extraction can separate the product according to the difference in solubility between the product and the impurities in different solvents; recrystallization can further improve the purity of the product and obtain pure (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid.
The entire synthesis process requires strict control of the reaction conditions and precise operation of each step to ensure high yield and product purity.

(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid needs to be paid attention to during storage and transportation.
This compound may have special properties. When storing, the temperature and humidity of the first environment should be the first. It should be stored in a cool and dry place to prevent deliquescence due to excessive humidity and deterioration caused by excessive temperature. For example, in the humid places of the south, special attention should be paid to moisture prevention and temperature control, and a suitable environment can be maintained with the help of air conditioners and dehumidification equipment.
In addition, it may have certain chemical activity and should be kept away from fire sources, oxidants, etc. Because the oxidant is easy to react with the compound, the source of ignition may cause the risk of combustion and explosion. If in chemical storage, such chemicals must be stored in separate warehouses with oxidants, and fireworks are strictly prohibited in the warehouse.
During transportation, the packaging must be strong and sealed. To prevent package damage and chemical leakage due to bumps and collisions. The selected packaging materials also need to be adapted. For example, special corrosion-resistant containers are used to prevent chemicals from reacting with packaging materials.
At the same time, transportation personnel must undergo professional training and be familiar with the characteristics of the chemical and emergency treatment methods. If there is an accident such as leakage on the way, it can be disposed of quickly and properly. For example, evacuate the surrounding population first, and then adopt corresponding treatment measures according to the leakage amount and chemical characteristics, such as adsorption with adsorption materials, to prevent the spread of pollution.

I look at the market price of " (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) benzenesulfonic acid" you are inquiring about, which is in the field of fine chemicals. However, its price is fickle, like a cloud in the sky, changing with the wind.
The reason is that the price of raw materials, the method of preparation, and the trend of supply and demand are all the keys to affecting their price. If raw materials are abundant and cheap, the preparation process is exquisite and efficient, and the market demand is stable, the price may tend to be easy. On the contrary, raw materials are scarce and expensive, the preparation is difficult, and the demand surges, and the price will rise.
If you want to know the exact price, you should check the chemical trading market and professional information platform in detail. And communicate with industry merchants and experts to get the actual situation. These things, at different times and in different regions, have different prices, which is difficult to generalize, and needs to be determined according to the real-time situation.