Orexin 2 receptor agonist is a potent and selective OX2R agonist with EC50 of 23 nM.

Almorexant HCl is a potent and competitive dual orexin 1 receptor (OX1)/orexin 2 receptor (OX2) antagonist with Ki values of 1.3 and 0.17 nM for OX1 and OX2, respectively.

TCS 1102 is a potent, dual orexin receptor antagonist (Ki values are 0.2 and 3 nM for OX2 and OX1 receptors respectively).

MK-1064 is a selective orexin 2 receptor antagonist(2-SORA) for the research of insomnia.

PF-3274167 is a high-affinity nonpeptide oxytocin receptor (OTR) antagonist, with Ki of 9.5 nM.

Oxytocin acetate is a mammalian neurohypophysial hormone and its actions are mediated by specific, high-affinity oxytocin receptors and ligand of oxytocin receptor.

SB-649868 is a potent and selective orally active orexin (OX) 1 and OX2 receptor antagonist (pKi =9.4 and 9.5 at the OX1 and OX2 receptor, respectively).

SB-408124 is a non-peptide antagonist for OX1 receptor with Ki of 57 nM and 27 nM in both whole cell and membrane, respectively, and exhibits 50-fold selectivity over OX2 receptor.

SB-334867 free base is a selective non-peptide orexin OX1 receptor antagonist with pKb of 7.2.

TCS-OX2-29 is a potent and selective orexin 2 (OX2) receptor antagonist with IC50 of 40 nM.

EMPA is highly potent, selective OX2 receptor antagonist with IC50 values of 2.3 nM and 1900 nM for OX2 and OX1 respectively.