The raw material drugs used in the production of various preparations are the effective components in the preparations, which are prepared by chemical synthesis, plant extraction or biotechnology

Medicinal powder, crystal, extract, etc., but the patient cannot take it directly.?The active ingredient of the medicine.?Only when the API is processed into a pharmaceutical preparation can it become a medicine for clinical application.?According to its source, API can be divided into chemical synthetic drugs and natural chemical drugs.?Chemical synthetic drugs can be divided into inorganic synthetic drugs and organic synthetic drugs.?Inorganic synthetic drugs are inorganic compounds (very few elements), such as aluminum hydroxide and magnesium trisilicate used to treat gastric and duodenal ulcer;?Organic synthetic drugs are mainly drugs prepared from basic organic chemical raw materials through a series of organic chemical reactions (such as aspirin, chloramphenicol, caffeine, etc.).?Natural chemical drugs can also be divided into biochemical drugs and phytochemical drugs according to their sources.?Antibiotics are generally produced by microbial fermentation, belonging to the category of biochemistry.?In recent years, a variety of semi synthetic antibiotics are the products of the combination of biosynthesis and chemical synthesis.?Among the bulk drugs, the varieties, output and output value of organic synthetic drugs account for the largest proportion. They are the main pillar of the chemical pharmaceutical industry.