A brief introduction to chemical and pharmaceutical intermediates!

Chemical and pharmaceutical intermediates refer to semi-finished products, which are intermediate products in the production of certain products. For example, to produce a product, it can be produced from intermediates to save costs.
Intermediates are formed by reactions such as sulfonation, alkali melting, nitration, and reduction of cyclic compounds such as benzene, naphthalene, and anthracene. For example, benzene is nitrated to nitrobenzene, which is then reduced to aniline. Aniline can be chemically processed into dyes, drugs, vulcanization accelerators, etc. Nitrobenzene and aniline are both intermediates.
It is also formed from acyclic compounds such as methane, acetylene, propylene, butane, butene, etc. through dehydrogenation, polymerization, halogenation, hydrolysis, and other reactions. For example, butane or butene can be dehydrogenated into butadiene, which can be chemically processed into synthetic rubber, synthetic fibers, etc. Butadiene is an intermediate.
Z initially refers to the intermediate products produced in the process of synthesizing spices, dyes, resins, drugs, plasticizers, rubber accelerators and other chemical products with coal tar or petroleum products as raw materials. It now refers to various intermediate products obtained in the process of organic synthesis. 
concept
The so-called pharmaceutical intermediates are actually some chemical raw materials or products used in the process of drug synthesis. This chemical product does not require a drug production license and can be produced in ordinary chemical factories. As long as it reaches certain levels, it can be used for the synthesis of drugs.
effect
Drug production requires a large number of special chemicals, which were originally mostly produced by the pharmaceutical industry itself. However, with the deepening of social division of labor and the advancement of production technology, the pharmaceutical industry has transferred some pharmaceutical intermediates to chemical enterprises for production. Pharmaceutical intermediates are fine chemical products, and the production of pharmaceutical intermediates has become a major industry in the international chemical industry.
In cell biology, intermediates refer to the central part of the gradually disintegrating spindle around the equatorial surface at the late stage of cell division, where the concentration of cytoplasm around increases and fills the whole equatorial surface. This thickening area is called intermediates.