LSD
lysergic acid diethylamide
Comparing r1.a3 → r1.a6+1bytes
Edit summaryRestore reagent testing, appearance and the identification guide carried by r1. They were dropped when amendment r1.a2 was created on 2026-09-20: the amendment copier carried only the summary columns (fixed 7d6e6ade8). Values copied unchanged from r1.
Article Changes2 modified · 37 unchanged
| International | Schedule I, UN Convention on Psychotropic Substances (1971); no jurisdiction has rescheduled |
| Typical national status | Controlled in virtually all named jurisdictions; research exemptions available in some |
=== Structural class ===
LSD belongs to the '''ergoline''' family — a class of compounds derived from ergot fungus (''Claviceps purpurea''). Its molecular formula is C₂₀H₂₅N₃O.
The molecule's rigid ring structure holds it in a fixed shape that fits [[glossary:receptor-binding]] sites exceptionally well — which is why LSD is 100 to 1,000 times more potent by weight than simpler [[substance_class:psychoactive/psychedelic|psychedelics]] like psilocybin or [[substance:dmt]]{{cite|doi=10.1111/bph.17361|anchor=fe9fcff1}}.