Looks like you’re thinking of 4-PrO-DMT, which has been around only since 2019: https://en.wikipedia.org/wiki/4-PrO-DMT

I was just thinking about the wild times during the 00s where you could easily order research chemicals online, wish I would’ve taken advantage of that to try some of the 2C- series :(

I looked it up. 4-HO-MET is what I was thinking of. One of those companies has ads on Facebook where they call it metocin. Only company I've seen actually say what RC they're selling in candy.

2C-E was pretty nuts. I tried it twice. Would have used it more if it didn't make me so nauseous. Those were the most intense open eye visuals I ever seen. Posters turned into cartoons. The bathroom tile turned to chocolate milk as I puked in the toilet. Tracers and breathing walls all around me. But mentally I felt nearly sober.

I took 4-aco-dmt a couple times. It was like mushrooms but way more intense. I think the intensity was just because I was using a cheap scale and probably dosed with 10mg more than I had intended.