Many complex organic compounds of bases that contain nitrogen appears weak in nature. Some of these molecules exhibit a specific biological activity in humans, and many also have been proven as a potent pharmaceuticals. Some of them are addictive drugs of addiction that has caused many problems for society. These compounds, which are sometimes called as alkaloids, usually containing at least one heterocyclic ring. The structures of several compounds of interest are described below:
|Lysergic Acid Diethylamide (LSD)|
Note that all these compounds contain at least one nitrogen with a pair of electrons that are not tied together. Setelaah extracted from coca leaves, cocaine would be isolated by adding hydrochloric acid to form a crystalline powder, cocaine hydrochloride. This form of cocaine shipped from South America.
Although simple acid-base titration began in ancient times, this method was used to test the purity of most drugs, both drugs are misused and legitimate. the old methods are not always abandoned when the newly emerging, and acid-base titration, if suitable for the sample, it is very cost effective.