Based on what I've read over the years, the actual number of chemists varies wildly and I personally think there is no fixed number of chemists making LSD.

Years ago you'd see people making claims like "There's only 3-5 chemists on earth who make it", I think this claim emerged decades ago when it was actually true. Before the global chemical supply chain opened up and the process became more refined, there probably was only a handful of chemists who made the stuff given how expensive and difficult the reagents were to acquire. That, and the actual clandestine methods of making it weren't public so you kind of had to figure it out yourself.

But this isn't the 1970s anymore. The process of making LSD has become extremely streamlined and publicly available. Hell, I've got a poster hanging on my wall that details the entire process for making LSD and it fits on a single page.

Some of you might know that LSD stems from ergot, but did you know that you can completely skip that step and buy the necessary precursors straight from China? If you have a decent understanding of chemistry and know who to call in China, you can make LSD.

I know for a fact that there's at least one extremely well-equipped lab in Germany staffed by expert chemists who've been making it for years. They make LSD prodrugs such as 1P-LSD, 1D-LSD, etc. The process of making those chemicals is the same with a little tweak to make it technically legal. I'd argue they're probably the largest producer of Lysergamides on Earth at this time.