Chapter 1
What is small molecule?
A small molecule refers to an organic compound of low molecular weight (generally less than 900 daltons) and may help regulate a biological process. Most drugs are small molecules.
What is inhibitor?
Inhibitor refers to the chemical or substance added or applied to another substance, for the purpose of slowing down a reaction or preventing an unwanted chemical change. For instance, anti-oxidants are often added as inhibitors to food to retard its spoilage from exposure to oxygen in air. Likewise, protective coatings of metals can inhibit the corrosion by preventing their contact with the air or water. Or put it another way, an inhibitor is actually an opposite of a catalyst. A small-molecule inhibitor will generally only inhibit one particular function.
What is small-molecule inhibitor?
After explaining what small molecule and inhibitor are respectively, here finally we move to the topic of this guide- what is small-molecule inhibitor?
Small-molecule inhibitors are, by definition, a well-established class of potential useful drugs, which can be applied in all kinds of fields of medical and pharmaceutical researches, such as neurological disease, cancer, inflammation, metabolic disease and so on.