[Almost 200 years ago, a handful craftsmen, geographically distant from each other, tried on their own to isolate the active principle of coffee.
Today, download the fascinating story about exploring the Plant Kingdom for caffeine and related purine alkaloids. Read either the full Kindle version at Amazon for 5.00$, or the free pdf w/o references at ResearchGate!]
Even though this book is targeted at students and their teachers, just about anyone will find it easy to understand.
Discovery will be followed by Guaraná