CVN766 (CVN 766) is a potent, exquisitely selective orexin 1 receptor (OX1R) antagonist with IC50 of 8 nM, 1000-fold selective over OX2R.

Suvorexant (MK-4305) is a potent, selective, and orally bioavailable antagonist of OX1R and OX2R currently under clinical investigation as a novel therapy for insomnia.Suvorexant is an analytical reference standard categorized as a diazepane sedative.Formulations containing suvorexant show abuse potential similar to zolpidem in recreational polydrug users with a history of sedative and psychedelic drug use.2 Suvorexant is regulated as a Schedule IV compound in the United States. This product is intended for use in analytical forensic applications.

Nivasorexant is a potent orexin receptor antagonist.

Lemborexant (E-2006) is a dual antagonist of the orexin OX1 and OX2 receptors which is under development for treatment of insomnia.

OBPt-9 is a potent, postivie allosteric potentiator of orexin receptor-mediated signaling, similarly potentiates the response of OXR1 and OXR2 to orexin A.

CVN45502 (CVN 45502) is a potent, orally bioavailable, highly selective orexin 1 receptor (Hcrtr1, OX1R) antagonist with binding affinity (pKi) of 7.86 (human Hcrtr1), significantly reduces feeding and body weight in diet-induced obese (DIO).

(R)-YNT-3708 is a potent, selective orexin 1 receptor (OX1R) agonist with EC50 of 7.48 nM and Emax 101%, 22-fold selectivity over OX2R (IC50=168 nM).

SB408124 is a non-peptide antagonist for OX1 receptor with Ki of 57 nM and 27 nM in both whole cell and membrane, respectively; exhibits 50-fold selectivity over OX2 receptor.

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

TAK-925 (Danavorexton) is a potent, selective, and brain-penetrant Orexin 2 receptor (OX2R) agonist with EC50 of 5.5 nM, no significant inhibition on OX1R (IC50>100 uM).TAK-925 also showed good selectivity against 106 off-target enzymes and receptors.

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.

MDK-5220(Orexin-2 receptor agonist) is the first selective nonpeptidic orexin 2 receptor (OX2R) agonist (OX2R EC50 = 0.023 μM, Emax = 98%; OX1R EC50 = 1.616 μM, Emax = 100%)

EMPA is a high-affinity, reversible and selective orexin OX2 receptor antagonist. [3H]EMPA binds to human and rat OX2-HEK293 membranes with KD values of 1.1 and 1.4 nM respectively.

Almorexant(ACT078573) 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.

Tebideutorexant is a potent orexin receptor antagonist. Tebideutorexant can be used for insomnia research.

ACT-335827 is a selective, orally active, brain-penetrant orexin type 1 receptor antagonist. ACT-33582 acts on OXR1 and OXR2 with IC50 values of 6 nM and 417 nM, respectively. ACT-33582 can be used in studies related to neurological disorders.

ACT-541468 is a dual orexin receptor antagonist.

TCS-OX2-29 is a potent and selective OX2 receptor antagonist with IC50 of 40 nM. Displays >250-fold selectivity for OX2 over OX1.

Vornorexant (TS-142, ORN0829) is a potent dual orexin 1 and 2 receptor antagonist with IC50 of 1.05 and 1.27 nM for hOX1R and hOX2R, resepctively.Vornorexant (TS-142, ORN0829) exhibited potent sleep-promoting effects at a po dose of 1 mg/kg in a rat polysomnogram study.Vornorexant (TS-142, ORN0829) is a viable candidate and is currently in clinical development for the treatment of insomnia.

OX2R agonist 1 is a potent, selective, small-molecule agonist of orexin receptor 2 (OX2R) with pEC50 of 8.28, >300-fold selectivity over OX1R.

Firazorexton is a potent, selective, experimental orexin 2 receptor (OX2R) agonist.

TCS-OX2-29 (hydrochloride) is a potent, high affinities and selective orexin-2 receptor (OX2R) antagonist with an IC50 value of 40 nM and a pKI value of 7.5. TCS-OX2-29 displays ~250-fold selectivity for OX2 over OX1.

SB-334867 is a selective orexin-1 (OX1) receptor antagonist.

Orexin B, rat, mouse (Rat orexin B) TFA is an endogenous orexin receptor agonist. Orexin B, rat, mouse TFA binds and activates two closely related orphan G protein-coupled receptors OX1-R and OX2-R. Orexin B, rat, mouse TFA stimulates food intake and energy expenditure and plays a significant role in sleep-wakefulness regulation.

SB-674042 is a potent and selective non-peptide orexin OX1 receptor antagonist (Kd = 3.76 nM); exhibits 100-fold selectivity for OX1 over OX2 receptors.

YNT-185 is a nonpeptide, selective orexin type-2 receptor (OX2R) agonist, with EC50s of 0.028 and 2.75 μM for OX2R and OX1R, respectively. YNT-185 ameliorates narcolepsy-cataplexy symptoms in mouse models.

JNJ-54717793, as a brain penetrant, is an orally active, selective and high affinity orexin-1 receptor (OX1R) antagonist (plasma EC50=85 ng/mL). The Ki values of JNJ-54717793 for hOX1R (human OX1R) and hOX2R are 16 nM and 700 nM, respectively. JNJ-54717793 is a potent compound of anxiety disorders.

YNT-185 dihydrochloride is a nonpeptide, selective orexin type-2 receptor (OX2R) agonist, with EC50s of 0.028 and 2.75 μM for OX2R and OX1R, respectively. YNT-185 dihydrochloride ameliorates narcolepsy-cataplexy symptoms in mouse models.

Orexin receptor antagonist 2 (compound 30) is a potent orexin receptor antagonist with pKis of 7.69 and 9.78. Orexin receptor antagonist 2 has the potential for the research of insomnia.