UR-144 (Item No. 11502) and XLR11 (Item No. 11565) are potent synthetic cannabinoids (CBs) that have been identified as adulterants of herbal products.^1,2 (1H-Indol-3-yl)(2,2,3,3-tetramethylcyclopropyl)methanone is the scaffold for UR-144, XLR11, and a number of additional synthetic CBs. The tetramethylcyclopropyl group typically confers selectivity for the peripheral CB₂ receptor.³ However, the addition of substituents at the N1-amine of the aminoalkylindole group is necessary for high affinity at either CB₁ or CB₂.³ This product is intended for forensic and research applications.

≥98%