According to the register of medicines in the Russian Federation, there are 218 drugs containing paracetamol as an active pharmaceutical ingredient. Paracetamol is widely used as an antipyretic and pain reliever among adults and children. The chemical-pharmaceutical synthesis of paracetamol is carried out from 4-aminophenol, the content of which is normalized in all drugs based on paracetamol. What for? 4-aminophenol