
The product under discussion is 4-Chlorobenzonitrile with the CAS number 623 - 03 - 0. It is supplied directly from the factory at the best price. Chemically, it has a molecular formula of C₇H₄ClN. The molecular weight of 4 - Chlorobenzonitrile is approximately 137.57 g/mol. Physically, it usually appears as a white to light - yellow crystalline powder. It has a melting point in the range of 83 - 86°C and a boiling point of around 232 - 234°C. This product is insoluble in water but shows good solubility in common organic solvents like ethanol, acetone, and chloroform.
4 - Chlorobenzonitrile has a wide range of applications in different industries. In the pharmaceutical industry, it serves as an important intermediate for the synthesis of various drugs. It can be used in the production of anti - inflammatory and analgesic drugs. The cyano group and the chlorine atom on the benzene ring can participate in a variety of chemical reactions, allowing for the construction of more complex drug molecules.
In the field of pesticides, it is used in the synthesis of some high - efficiency pesticides. These pesticides can effectively control pests and protect crops from damage. Moreover, in the field of organic synthesis, 4 - Chlorobenzonitrile is an important building block for the preparation of other organic compounds. It can be used in the synthesis of dyes and pigments, giving them specific colors and properties.
When using 4 - Chlorobenzonitrile, it is necessary to follow strict safety procedures. First, wear appropriate personal protective equipment, such as chemical - resistant gloves, safety goggles, and a lab coat. Since it is insoluble in water, when it needs to be dissolved, select suitable organic solvents. The dissolution process should be carried out in a well - ventilated fume hood to avoid inhalation of solvent vapors.
For chemical reactions, accurately measure the amount of 4 - Chlorobenzonitrile according to the reaction requirements. The reaction conditions, such as temperature, pressure, and reaction time, should be strictly controlled. After the reaction, appropriate separation and purification methods, such as filtration, recrystallization, or distillation, should be used to obtain the desired product.
Case 1: Pharmaceutical Synthesis
In a pharmaceutical research project, the goal was to synthesize a new anti - inflammatory drug. 4 - Chlorobenzonitrile was used as a key intermediate. First, through a nucleophilic substitution reaction, the chlorine atom on the benzene ring of 4 - Chlorobenzonitrile was replaced by a specific functional group. Then, through a series of oxidation and reduction reactions, the cyano group was further transformed into a carboxylic acid group. After several steps of reactions and purification processes, the target anti - inflammatory drug was successfully synthesized. The final product showed good anti - inflammatory activity in in - vitro and in - vivo experiments.
Case 2: Pesticide Production
A pesticide manufacturing company aimed to develop a new type of insecticide. 4 - Chlorobenzonitrile was used as a starting material. By reacting it with other organic compounds, a new compound with insecticidal activity was synthesized. The new insecticide was tested in a farm environment. It was found that it could effectively control pests such as aphids and caterpillars on crops, and at the same time, it had little impact on the environment and non - target organisms.
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