S Is Refers To The Semi Finished Products Production Of Some In Middle Product Such As Produce A Tha - China

On interstate are used in some chemical raw materials in the process of

drug synthesis process or chemical products.

This kind of chemical

products, don' t need a pharmaceutical production license, in ordinary

chemical factory can produce, as long as at some level, can be used for

the synthesis of the drug.

Intermediates have by cyclic compounds such as benzene, naphthalene and anthracene by sulfonation, alkali fusion, nitration and reduction reaction.

Benzene via nitration, for example, nitrobenzene, then through reduction of aniline, aniline by chemical processing into dyes, drugs, vulcanization accelerator, etc.

Nitrobenzene and aniline are intermediates.

Have the acyclic compounds such as methane and acetylene, propylene, butane and butylene by reactions such as dehydrogenation and aggregation, halide, hydrolysis and into.

Such as butane and butene via dehydrogenation into butadiene, butadiene by chemical processing into synthetic rubber, synthetic fiber, etc.

Butadiene is intermediate.

Originally refers to the use of coal tar or petroleum products as a raw material synthetic spices, dye, resin, drugs, such as plasticizer, rubber accelerator in the process of chemical products, produce in the middle of the product.

Now refers to the various intermediate in organic synthesis process.

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