1B-LSD (N1-butyryl-lysergic acid diethylamide) is an acylated derivative of lysergic acid diethylamide (LSD), which has been sold as a designer drug.[2] In tests on mice it was found to be an active psychedelic, though with only around 1/7 the potency of LSD itself.[3][4][5]
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Formula | C24H31N3O2 |
Molar mass | 393.531 g·mol−1 |
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1B-LSD is illegal in Singapore.[6] Sweden's public health agency suggested classifying 1B-LSD as a hazardous substance, on June 24, 2019.[7]