Which classification of drugs is most useful for the medicinal chemists?

molecular targets

The correct answer is option 4. molecular targets.

The classification of drugs based on molecular targets is most useful for medicinal chemists. Medicinal chemists are primarily concerned with designing and synthesizing new drugs that interact with specific molecular targets in the body to produce desired pharmacological effects. Understanding the molecular targets of drugs allows medicinal chemists to design compounds with optimized potency, selectivity, and pharmacokinetic properties. By targeting specific molecular receptors, enzymes, ion channels, or other biological molecules, medicinal chemists can develop drugs that modulate key pathways involved in disease processes while minimizing off-target effects and adverse reactions. Classification based on molecular targets provides valuable insights into the mechanisms of action of drugs and facilitates the rational design of novel therapeutics for various diseases and conditions.