It's not a big deal. Theres all kinds of compounds in food. Dopamine is a cool compound. Cannabinoids are cool too. There all kinds of natural products. The real problem with all the drug laws is that they make it illegal for private citizens to operate laboratory equiptment. Mosty laboratory reagents are illegal as well. That means that only huge companies are allowed to research drugs and other compounds. And that means I cannot develope new products on my own without some executive approval and without some company taking the patent from me. See what I am saying.
You can't invent anything. Research has to done under the supervision of the government which means that whatever company or organization you are working for owns everything you do.

If you are trying to develope a new product, invention, or drug you will need to operate equiptment and compounds that are regulated by federal law. It basically means that it is illegal to start your own business in the scientific industry. Espesiall since any work done before the product is fully developed must be kept secret to prevent others from stealing you work. And a secret lab would land me in jail for a long time. That's capitalism for you.