Not quite the specific chemicals anymore. As I understood it, when they outlawed 1v, the legislation was changed to also consider the weight of the molecule. Ok fine, still whack-a-mole, it just took the clandestine chemists slightly longer to figure out what mostly inert structures they could add to the LSD (though not actually add, since that would mean they were at some point making LSD, which is illegal) that would be cleaved off metabolically so you end up with LSD in your system