I noticed that many drugs that cause dependence have the suffix word "-ine". For example: CaffeineCaffeine, Nicotinenicotine, Benzodiazepinebenzodiazepine, Methamphetaminemethamphetamine, Cocainecocaine, Morphineand morphine.
My questions:
- Why do many of these drugs that cause dependence have the word "-ine" in itthem?
- What isdoes "-ine" mean in a chemical?