Well, 2,5 DMB is a recognized precursor to the schedule 1 substance 2-CB, at least in the us. So if you made the nitrostyrene out of it, then the prosecution could make a pretty good case against you for taking steps to get to the final controlled product. So if you got caught making it, then you would probably g to jail, whether it was officially illegal or not.
It is seductive, way too seductive. -Eleusis