
An important feature common to LSD and other serotonergic hallucinogens is that they produce 5-HT 2A-receptor activation and induce the head-twitch response (HTR) in rats and mice. This study describes the characterization of 1P-LSD in comparison with LSD using various chromatographic, mass spectrometric methods and nuclear magnetic resonance spectroscopy. This non-controlled derivative of d-lysergic acid diethylamide (LSD) has previously not been described in the published literature despite being closely related to 1-acetyl-LSD (ALD-52), which was developed in the 1950s.


1-Propionyl- d-lysergic acid diethylamide hemitartrate (1P-LSD) has become available as a ‘research chemical’ in form of blotters and powdered material.
