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Other names | LME54; LME; Lysergic acid methylethylamide; LA-methylethylamide; N-Ethyl-N-methyllysergamide; N-Ethyl-N,6-dimethyl-9,10-didehydroergoline-8β-carboxamide |
Routes of administration | Oral [1] |
Drug class | Serotonergic psychedelic; Hallucinogen |
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Chemical and physical data | |
Formula | C19H23N3O |
Molar mass | 309.413 g·mol−1 |
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LME-54, or simply LME, also known as lysergic acid methylethylamide or as N-methyl-N-ethyllysergamide, is a serotonergic psychedelic of the lysergamide family related to lysergic acid diethylamide (LSD; LSD-25). [2] [3] [4] [5] [1] It is the analogue of LSD in which one of the N-ethyl groups has been replaced with an N-methyl group. [2] [3] [4]
The drug was tested in humans at a dose of 25 μg and was found to produce no effects at this dose in several subjects and to produce weaker effects than a 25 μg dose of LSD in one subject. [1] Higher doses do not appear to have been assessed. [1] Based on these findings, LME-54 has been described as weakly active or active but less so than LSD with no specific numbers available. [2] [3] [4] [5] [6] [7] Its antiserotonergic activity in vitro does not appear to have been reported. [6]
LME-54 was first described in the scientific literature by Harold Alexander Abramson and Andre Rolo by 1965. [1] [8]
Table 2. Relative potency values for lysergic acid amides. [...]
TABLE 2. Relative human potency of lysergic acid amides [...]