IEM 1754 2HBr (IEM-1754; IEM 1754; IEM1754), the dihydrobromide salt of IEM-1754, is a selective voltage-dependent open-channel blocker of AMPA/kainate receptors with important biological activity.

D-glutamine (also known as H-D-Gln-OH), an unnatural isomer of glutamine, is a D type stereoisomer of glutamine which is one of the 20 amino acids encoded by the standard genetic code.

(-)-Huperzine A (Hup A; Selagine; (-)-Selagine) is a naturally occurring, highly specific and reversible inhibitor of acetylcholinesterase (AChE) with neuroprotective activity.

CX-516 is a novel and potent ampakine drug, nootropic drug.