MrEDuck
Well-Known Member
See when you set out to make a new drug you have a target structure and you explore every similar structure you can to find the one that works best. It's like starting a lot of seeds to find a mom. The 25 in the name LSD-25 means it was probably the 25th drug in a similar series. It just happened to be the magical configuration. They didn't start exploring the activity of the analogues until after the activity of LSD was discovered which wasn't until 5 years after it had first been synthesized.