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4-Chloro-3-(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl)-Benzenesulfonic Acid
Linshang Chemical
|
HS Code |
584405 |
| Name | 4-Chloro-3-(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl)-Benzenesulfonic Acid |
| Chemical Formula | C10H9ClN2O4S |
| Molecular Weight | 288.71 g/mol |
| Appearance | Solid (usually powder or crystalline form) |
| Solubility In Water | Moderate to low (depending on conditions) |
| Solubility In Organic Solvents | Soluble in some polar organic solvents |
| Melting Point | Typically has a defined melting point (exact value needs experimental determination) |
| Pka Value | Related to the acidic nature of the sulfonic acid group (specific value needs measurement) |
| Stability | Stable under normal conditions but may react with strong oxidants or bases |
| Odor | Odorless or very faint odor |
As an accredited 4-Chloro-3-(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl)-Benzenesulfonic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 1 kg of 4 - chloro - 3 - (4,5 - dihydro - 3 - methyl - 5 - oxo - 1H - pyrazol - 1 - yl) - benzenesulfonic Acid in sealed plastic bags. |
| Storage | 4-chloro-3-(4,5 - dihydro-3-methyl-5-oxo-1H - pyrazol-1-yl) - benzenesulfonic acid should be stored in a cool, dry place, away from direct sunlight. Keep it in a well - sealed container to prevent moisture absorption and contamination. Store it separately from incompatible substances, as it may react with certain chemicals, and ensure the storage area is well - ventilated. |
| Shipping | 4 - chloro - 3 - (4,5 - dihydro - 3 - methyl - 5 - oxo - 1H - pyrazol - 1 - yl) - benzenesulfonic acid is shipped in sealed, corrosion - resistant containers. Special care is taken to ensure compliance with chemical transport regulations due to its nature. |
Competitive 4-Chloro-3-(4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl)-Benzenesulfonic Acid prices that fit your budget—flexible terms and customized quotes for every order.
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What is the chemical structure of 4-chloro-3- (5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl) -benzenesulfonic Acid?
This is the chemical structure analysis of 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid. Among its structures, the benzene ring is the core structure. Above the benzene ring, there is a chlorine atom at position 4, which is connected to the carbon atom of the benzene ring by a single bond. The chlorine atom has a high electronegativity, which has an impact on the electron cloud density distribution of the benzene ring. At position 3, there is a substituent consisting of 4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl. In this substituent, the pyrazole ring is a five-membered heterocycle containing two nitrogen atoms. Position 1 of the pyrazole ring is connected to the benzene ring, 3-methyl indicates that the pyrazole ring has methyl substitution at position 3, and 5-oxo means that the pyrazole ring at position 5 is carbonyl. In addition, the benzene ring is also connected with a sulfonic acid group. The sulfur atom in the sulfonic acid group is connected to two oxygen atoms by a double bond, and is connected to another hydroxyl oxygen atom by a single bond. The sulfonic acid group is strongly acidic and easily ionizes hydrogen ions in water. In this way, the various parts of the compound interact with each other to form a unique chemical structure and chemical properties.
What are the physical properties of 4-chloro-3- (5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl) -benzenesulfonic Acid
4-Chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid, this is an organic compound. Its physical properties are quite important and are related to many practical applications.
First, the appearance of this compound is usually white to off-white crystalline powder, just like fine snowflakes, delicate and pure, and may shimmer in sunlight.
Besides solubility, it exhibits a certain solubility in water, just like fine sand merging into a stream, and can blend with water. This is due to the presence of sulfonic acid groups in its molecular structure. This group is hydrophilic, so it is well dispersed in water. However, it has poor solubility in common organic solvents such as ethanol and ether, like oil and water, which is mainly due to its overall molecular polarity and structural characteristics.
Melting point is also a key physical property. After determination, its melting point is in a specific temperature range. This temperature is like a checkpoint. When the temperature rises to the melting point, the compound will convert from solid to liquid, just like ice when heated into water. Accurately knowing the melting point is of great significance for identification and purity determination, just as it is important to measure whether an item meets certain standards.
In terms of stability, under normal environmental conditions, it is relatively stable, like a strong fortress, and is not prone to significant chemical changes. However, if it encounters extreme conditions such as high temperature, strong acid or strong alkali, its structure may be damaged, just like a fortress crumbling under heavy artillery fire, triggering chemical reactions that change the molecular structure, which in turn affects its performance and use.
These physical properties are closely related and interact with each other, jointly determining the application potential and application scenarios of 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid in different fields.
First, the appearance of this compound is usually white to off-white crystalline powder, just like fine snowflakes, delicate and pure, and may shimmer in sunlight.
Besides solubility, it exhibits a certain solubility in water, just like fine sand merging into a stream, and can blend with water. This is due to the presence of sulfonic acid groups in its molecular structure. This group is hydrophilic, so it is well dispersed in water. However, it has poor solubility in common organic solvents such as ethanol and ether, like oil and water, which is mainly due to its overall molecular polarity and structural characteristics.
Melting point is also a key physical property. After determination, its melting point is in a specific temperature range. This temperature is like a checkpoint. When the temperature rises to the melting point, the compound will convert from solid to liquid, just like ice when heated into water. Accurately knowing the melting point is of great significance for identification and purity determination, just as it is important to measure whether an item meets certain standards.
In terms of stability, under normal environmental conditions, it is relatively stable, like a strong fortress, and is not prone to significant chemical changes. However, if it encounters extreme conditions such as high temperature, strong acid or strong alkali, its structure may be damaged, just like a fortress crumbling under heavy artillery fire, triggering chemical reactions that change the molecular structure, which in turn affects its performance and use.
These physical properties are closely related and interact with each other, jointly determining the application potential and application scenarios of 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid in different fields.
What are the main uses of 4-chloro-3- (5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl) -benzenesulfonic Acid?
4-Chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid, this compound has a wide range of uses. In the field of medicinal chemistry, it is often used as a key intermediate to assist in the synthesis of drug molecules with specific biological activities. Because it contains specific functional groups in its structure, it can precisely interact with targets in vivo, so it is of great significance for the development of new therapeutic drugs.
In the field of materials science, it may be able to embed polymer materials through specific reactions, imparting novel properties such as special optical, electrical or chemical stability to materials. For example, it can enhance the anti-aging and corrosion resistance of materials, so that the materials can still maintain good performance in harsh environments.
In agricultural chemistry, it may play an important role in the creation of new pesticides. Through rational design and modification, high-efficiency, low-toxicity and environmentally friendly pesticide varieties may be developed to achieve precise attack on pests, while reducing the adverse effects on the environment and non-target organisms.
In addition, in the field of fine chemicals, it can be used to synthesize high-end dyes, pigments and special additives. To give better color fastness, light resistance and color brightness to dyes and pigments, or to provide unique surface activity, dispersion and other properties for additives, improve the quality and added value of fine chemical products.
In the field of materials science, it may be able to embed polymer materials through specific reactions, imparting novel properties such as special optical, electrical or chemical stability to materials. For example, it can enhance the anti-aging and corrosion resistance of materials, so that the materials can still maintain good performance in harsh environments.
In agricultural chemistry, it may play an important role in the creation of new pesticides. Through rational design and modification, high-efficiency, low-toxicity and environmentally friendly pesticide varieties may be developed to achieve precise attack on pests, while reducing the adverse effects on the environment and non-target organisms.
In addition, in the field of fine chemicals, it can be used to synthesize high-end dyes, pigments and special additives. To give better color fastness, light resistance and color brightness to dyes and pigments, or to provide unique surface activity, dispersion and other properties for additives, improve the quality and added value of fine chemical products.
What are the synthesis methods of 4-chloro-3- (5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl) -benzenesulfonic Acid
The synthesis method of 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid can be explored from the following ways.
First, the derivative containing chlorobenzenesulfonic acid is used as the starting material. Select the appropriate chlorobenzenesulfonic acid, and the chlorine atom at a specific position on the benzene ring is the key check point of the subsequent reaction. The chlorobenzenesulfonic acid is reacted with the precursor containing pyrazole structure. Pyrazole precursors need to be carefully prepared. For example, 4,5-dihydro-3-methyl-5-oxo-1H-pyrazole structures can be obtained by condensation of specific β-ketoate and hydrazine compounds under suitable conditions. This condensation reaction requires control of the reaction temperature, time and proportion of reactants. The two are fully reacted by mild heating, or carried out in specific organic solvents, such as ethanol, acetone, etc., to promote the reaction by means of the characteristics of the solvent.
Second, the obtained pyrazole structure is substituted with chlorobenzenesulfonic acid. This substitution reaction may be catalyzed by alkali substances, such as potassium carbonate, sodium carbonate, etc. The alkali can promote the deprotonation of the nitrogen atom on the pyrazole structure, enhance its nucleophilicity, and thus more easily replace the benzene ring chlorine atom of chlorobenzenesulfonic acid. The temperature and reaction time of the reaction system also need to be precisely controlled. Moderate heating can speed up the reaction rate, but too high temperature may cause side reactions to occur. Keep stirring to fully contact the reactants to improve the reaction efficiency.
Third, after the reaction is completed, the product needs to be separated and purified. Common separation methods can be used, such as extraction, column chromatography, etc. The reaction mixture is extracted with an organic solvent, and the target product is transferred to the organic phase. Subsequently, column chromatography is used to purify the product according to the different distribution coefficients of the product and impurities in the stationary and mobile phases. Through this series of operations, pure 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid can be obtained.
First, the derivative containing chlorobenzenesulfonic acid is used as the starting material. Select the appropriate chlorobenzenesulfonic acid, and the chlorine atom at a specific position on the benzene ring is the key check point of the subsequent reaction. The chlorobenzenesulfonic acid is reacted with the precursor containing pyrazole structure. Pyrazole precursors need to be carefully prepared. For example, 4,5-dihydro-3-methyl-5-oxo-1H-pyrazole structures can be obtained by condensation of specific β-ketoate and hydrazine compounds under suitable conditions. This condensation reaction requires control of the reaction temperature, time and proportion of reactants. The two are fully reacted by mild heating, or carried out in specific organic solvents, such as ethanol, acetone, etc., to promote the reaction by means of the characteristics of the solvent.
Second, the obtained pyrazole structure is substituted with chlorobenzenesulfonic acid. This substitution reaction may be catalyzed by alkali substances, such as potassium carbonate, sodium carbonate, etc. The alkali can promote the deprotonation of the nitrogen atom on the pyrazole structure, enhance its nucleophilicity, and thus more easily replace the benzene ring chlorine atom of chlorobenzenesulfonic acid. The temperature and reaction time of the reaction system also need to be precisely controlled. Moderate heating can speed up the reaction rate, but too high temperature may cause side reactions to occur. Keep stirring to fully contact the reactants to improve the reaction efficiency.
Third, after the reaction is completed, the product needs to be separated and purified. Common separation methods can be used, such as extraction, column chromatography, etc. The reaction mixture is extracted with an organic solvent, and the target product is transferred to the organic phase. Subsequently, column chromatography is used to purify the product according to the different distribution coefficients of the product and impurities in the stationary and mobile phases. Through this series of operations, pure 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid can be obtained.
What are the precautions for 4-chloro-3- (5-dihydro-3-methyl-5-oxo-1h-pyrazol-1-yl) -benzenesulfonic Acid in storage and transportation?
4-Chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid, which is a special chemical substance. During storage and transportation, many points need to be carefully paid attention to.
Bear the brunt of the first, and the storage must be dry and cool. Because of its sulfonic acid group, it is very easy to deliquescent in contact with water, causing its properties to change, which in turn affects its quality and utility. If stored at high temperature, it may cause chemical reactions, or cause material decomposition and deterioration, so the temperature should be controlled within a suitable range, such as between 5 ° C and 25 ° C.
Furthermore, the substance must be sealed and stored. Due to exposure to air, it is easy to interact with gases such as oxygen and carbon dioxide. Sulfonic acid groups may be oxidized, and pyrazolyl may also react, resulting in a decrease in the purity of the substance.
When transporting, the packaging must be solid and stable. This substance may be corrosive to a certain extent. If the packaging is damaged, it will not only lose itself, but also endanger the transportation environment and personnel safety. Appropriate packaging materials should be used, such as plastic or glass containers with strong corrosion resistance, and properly filled with cushioning materials to prevent it from being damaged due to collisions during transportation.
In addition, transportation and storage personnel should be familiar with the characteristics and safety precautions of this substance. In the event of an unexpected situation such as a leak, it is necessary to be able to respond quickly and correctly. In the event of a leak, the scene should be isolated immediately, personnel should be evacuated, and appropriate methods should be selected according to its characteristics to clean up, and must not be blindly disposed of.
All of these are the key points to be paid attention to when storing and transporting 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid, so as to ensure that the substance is safe, stable, and achieves the intended purpose of use.
Bear the brunt of the first, and the storage must be dry and cool. Because of its sulfonic acid group, it is very easy to deliquescent in contact with water, causing its properties to change, which in turn affects its quality and utility. If stored at high temperature, it may cause chemical reactions, or cause material decomposition and deterioration, so the temperature should be controlled within a suitable range, such as between 5 ° C and 25 ° C.
Furthermore, the substance must be sealed and stored. Due to exposure to air, it is easy to interact with gases such as oxygen and carbon dioxide. Sulfonic acid groups may be oxidized, and pyrazolyl may also react, resulting in a decrease in the purity of the substance.
When transporting, the packaging must be solid and stable. This substance may be corrosive to a certain extent. If the packaging is damaged, it will not only lose itself, but also endanger the transportation environment and personnel safety. Appropriate packaging materials should be used, such as plastic or glass containers with strong corrosion resistance, and properly filled with cushioning materials to prevent it from being damaged due to collisions during transportation.
In addition, transportation and storage personnel should be familiar with the characteristics and safety precautions of this substance. In the event of an unexpected situation such as a leak, it is necessary to be able to respond quickly and correctly. In the event of a leak, the scene should be isolated immediately, personnel should be evacuated, and appropriate methods should be selected according to its characteristics to clean up, and must not be blindly disposed of.
All of these are the key points to be paid attention to when storing and transporting 4-chloro-3- (4,5-dihydro-3-methyl-5-oxo-1H-pyrazole-1-yl) -benzenesulfonic acid, so as to ensure that the substance is safe, stable, and achieves the intended purpose of use.
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