Substances · Lysergamides
LSD-25
- Preferred name
- LSD-25
- IUPAC name
- (6aR,9R)-N,N-diethyl-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
- Parent CAS number (reference)
- 50-37-3
- Molecular formula
- C20H25N3O
- Molecular weight
- 323.4 g/mol
- InChIKey
- VAYOSLLFUXYJDT-RDTXWAMCSA-N
- PubChem
- CID 5761
- Source
- PubChem
- Verified synonyms & catalog abbreviations
-
Lysergide Lysergic acid diethylamide LSD LSD25
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Chemical Architecture & Structural Profile
LSD-25 ((6aR,9R)-N,N-diethyl-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide) is a reference compound belonging to the Lysergamides class, characterized by the molecular formula C20H25N3O and a molar mass of 323.4 g/mol. The parent molecule is indexed under CAS registry number 50-37-3 and in the NCBI PubChem database as CID 5761 (Standard InChIKey: VAYOSLLFUXYJDT-RDTXWAMCSA-N).
Citations
- PubChem — PubChem (2026-11-12)
Reference Toxicology & Safety Profile
In documented chemical and harm-reduction literature (PubChem / PsychonautWiki, CC BY 4.0), LSD-25 is indexed within the Lysergamides structural group. Toxicological notes (PsychonautWiki): extremely low toxicity relative to dose. Dependence liability (PsychonautWiki): non-addictive with a low abuse potential. Documented cross-tolerance class: psychedelics. Standard laboratory handling precautions—including nitrile gloves, eye protection, and local exhaust ventilation—apply whenever handling the reference material.
Citations
- PubChem — PubChem (2026-11-12)
Analytical Use & Laboratory Notice
This reference sheet provides chemical, analytical, and toxicological provenance only. The material is strictly not for human consumption, diagnostic, or veterinary use. Research-use labelling does not establish legal status in any jurisdiction.
Citations
- EUDA / National Chemical & Controlled Substance Registry (SG) — National Regulatory Authority (SG) (2026-11-12)