Drugs which consist of a single chemical have several names: the basic (and in some cases very long) systematic name, various other generic name usually formed by abbreviating the chemical name, and then zero or more (usually trademarked) trade names used by the manufacturers.
So, for example, take LSD. The systematic name is (6aR,9R)- N,N- diethyl- 7-methyl- 4,6,6a,7,8,9- hexahydroindolo- [4,3-fg] quinoline- 9-carboxamide. Since that’s quite a mouthful, the shorter (but still generic) terms lysergic acid diethylamide or LSD are usually used. It was manufactured and sold commercially under the trade name delysid.