Acth (1-4) is the ACTH N-terminal tetrapeptide.

SB290157 trifluoroacetate is a potent and selective antagonist of C3a receptor(IC50 of 200 nM). SB 290157 is a competitive antagonist of 125I-C3a radioligand binding to rat basophilic leukemia-2H3 cells expressing the human C3aR (RBL-C3aR, IC50 of 200 nM).

L-838417 is a GABAA receptor subtype-selective benzodiazepine site-selective ligand and GABAA receptor-positive modulator.