I'm not sure if even that's such a straightforward argument to make. I've recently been looking into buying some reagents for fungal microscopy, and supposedly Melzer's reagent is awkward to get hold of (particularly in the USA?) because chloral hydrate is a "date rape drug".

Another chemical branded as a date rape drug is GHB, but it is also popular as a recreational drug. Again, not something you can say possession of implies some intention to commit rape.