1P-LSD
| Clinical data | |
|---|---|
| Other names | 1-Propanoyl-LSD; 1-Propionyl-LSD | 
| Legal status | |
| Legal status | 
 | 
| Identifiers | |
| 
 | |
| CAS Number | |
| PubChem CID | |
| ChemSpider | |
| UNII | |
| CompTox Dashboard (EPA) | |
| Chemical and physical data | |
| Formula | C23H29N3O2 | 
| Molar mass | 379.504 g·mol−1 | 
| 3D model (JSmol) | |
| 
 | |
| 
 | |
1P-LSD, also known as 1-propanoyl-lysergic acid diethylamide (1-propionyl-LSD), is a psychedelic drug of the lysergamide class that is a derivative and functional analogue of LSD and a homologue of ALD-52. It originated in 2015 when it appeared a designer drug sold online. It was first synthesized as a legal-LSD alternative by Lizard Labs, a Netherlands based research chemical laboratory. It modifies the LSD molecule by adding a propionyl group to the nitrogen atom of LSD's indole group.