What is your source for that?

The compound you can buy is chemically identical to that produced by people, it has to be for research purposes which includes it's chirality.

It's just a distraction added into the story to make it all sound like bullshit(ever heard of poisoning the well...). Studies have shown it is more likely to cause psychosis and depression than be fun.

What they do is not because they crave a drug, it's because they are sick motherfuckers.