1Fe-LSD

1Fe-LSD, also known as 1-(ferrocenecarbonyl)-LSD or as SYN-L-234, is a psychedelic drug of the lysergamide family related to lysergic acid diethylamide (LSD).^[1][2][3] It is thought to be a prodrug of LSD.^[1][2][3] The drug was patented by Lizard Labs in 2024.^[3] Subsequently, it was encountered online as a novel designer drug being sold in Germany in November 2025.^[1][2] 1Fe-LSD as the hemi-L-tartrate salt has been sold in the form of blotter containing 200 μg per tab and micropills containing 300 μg per pill.^[1][2] 1Fe-LSD contains ferrocene, an iron compound, which is an orange organometallic compound and is assumed to result in the distinctive orange color of 1Fe-LSD blotter and pills.^[1][2] 1Fe-LSD is not an explicitly controlled substance in the United States^[4] or in Canada.^[5]

Other names1-(Ferrocenecarbonyl)-LSD; (8β)-1-Ferrocenecarbonyl-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide; SYN-L-234

Routes of
administrationOral^[1][2]

Drug classSerotonergic psychedelic; Hallucinogen

ATC code

• None

Quick facts Clinical data, Other names ...

1Fe-LSD

Clinical data
Other names	1-(Ferrocenecarbonyl)-LSD; (8β)-1-Ferrocenecarbonyl-N,N-diethyl-6-methyl-9,10-didehydroergoline-8-carboxamide; SYN-L-234
Routes of administration	Oral[1][2]
Drug class	Serotonergic psychedelic; Hallucinogen
ATC code	None
Identifiers
CAS Number	3029080-72-3
PubChem CID	176002870
Chemical and physical data
Formula	C31H33FeN3O2
Molar mass	535.469 g·mol−1
3D model (JSmol)	Interactive image
SMILES CCN(C([C@H]1CN(C)[C@]2([H])Cc3c4c(C2=C1)cccc4n(C(c5ccc[cH-]5)=O)c3)=O)CC.c6[cH-]ccc6.[Fe+2]
InChI InChI=1S/C26H28N3O2.C5H5.Fe/c1-4-28(5-2)25(30)19-13-21-20-11-8-12-22-24(20)18(14-23(21)27(3)15-19)16-29(22)26(31)17-9-6-7-10-17;1-2-4-5-3-1;/h6-13,16,19,23H,4-5,14-15H2,1-3H3;1-5H;/q2*-1;+2/t19-,23-;;/m1../s1 Key:IIOLYFVNUDARGZ-CHOFETAFSA-N

Close