1, unlisted drugs at home and abroad:
2, change the route of administration and has not yet been listed and sold at home and abroad.
3. Drugs that have been listed abroad but not yet listed in China:
4. Change the acid radical, alkali (or metal element) of the listed salt drugs, but do not change their pharmacological effects and preparations.
5, change the dosage form of drugs that have been listed in China, but do not change the route of administration.
6 raw materials or preparations with national drug standards.
Extended data
Chemical pharmaceutical preparation industry has always been the dominant sub-industry of China's pharmaceutical industry, with the characteristics of high technology content, high capital investment, high risk, high income and relative monopoly.
From the value chain point of view, chemicals are at the high end of the value chain, and the order of increasing value is generic drugs and patented drugs, and patented drugs are at the top of the whole value chain.
In the future, the chemical preparation industry will move towards differentiation, and the characteristics of R&D enterprises and production enterprises will gradually become obvious. At the same time, with the expiration of foreign patented drugs, "heavy" drugs have become the target of imitation enterprises, which has provided a good guide for the industry to develop in the direction of generic drugs, and the development of generic drugs is facing good opportunities.
In addition, the research and development cycle of new drugs is long, with large investment and high risk. However, the controlled release technology and chiral drug development based on the existing drug chemical structure do not have the above risks, and may become the focus of future technology development.
Baidu encyclopedia-chemicals