NE100 hydrochloride is a potent and selective σ1 receptor antagonist (Ki = 0.86 nM) that displays > 55-fold selectivity over σ2 receptors and > 6000-fold selectivity over D1,

Nebivolol hydrochloride is a highly selective β1-adrenoceptor antagonist

Nedocromil is an inhaled anti-inflammatory agent for the preventive management of asthma.

Nelotanserin is a potent 5-HT2A inverse agonist, a moderately potent 5-HT2C partial inverse agonist and a weak 5-HT2B inverse agonist, with IC50s of 1.7, 79, 791 nM in IP accumulation assays, respectively.

Netazepide (YF476, Sograzepide) is a potent, selective and orally active gastrin/CCK-2 antagonist with IC50 of 0.1 nM.

NFEPP is a novel potent, selective pH-dependent μ-opioid receptor (MOR) agonist with a low pKa, shows significantly lower affinity compared with fentanyl at pH 7.4.

NIBR 189 is a potent and selective EBI2 (GPR183) receptor antagonist (IC50 values are 11 and 15 nM for human and mouse EBI2 receptors respectively).

Nifenalol is a beta-adrenoceptor antagonist.

NKP608 is a non-peptidic derivative of 4-aminopiperidine which acts as a selective, specific and potent antagonist at the neurokinin-1 (NK-1) receptor both in vitro(IC50=2.6 nM) and in vivo.

NMI 8739 is a dopamine D2 autoreceptor agonist, which is an amine conjugate of the DHA carrier and the neurotransmitter dopamine.

NNZ2591 (cyclo-L-glycyl-L-2-allylproline)1 is an investigational synthetic analog of cyclic glycine-proline (cGP), a breakdown product of human insulin-like growth factor 1 (IGF-1), that has been chemically modified to increase its half-life, stability, and oral bioavailability.

N-Oleoyl glycine is a lipoamino acid, which stimulates adipogenesis associated with activation of CB1 receptor and Akt signaling pathway in 3T3-L1 adipocyte.

Novel psychopharmacologic agent. Displays antagonist activity at 5-HT, dopamine, noradrenalin and histamine receptor subtypes (pKi values are 8.60, 8.40, 10.15, 9.75, 10.46, 8.84, 9.60, 9.94, 8.85, 8.90, 8.84, 9.38, 8.95, 8.93, 8.9, 9.49, 8.91, 9.00 and 8

NPS 2143 hydrochloride is a selective CaSR (Ca2+-sensing receptor) inhibitor and antagonist, shown to block increases in cytoplasmic Ca2+ concentrations elicited by human Ca2+ receptors expressed in HEK293 cells with an IC50 of 43 nM. NPS 2143 hydrochlori

NPS-2143(SB 262470A ) is a selective potent calcium ion-sensing receptor antagonist with IC50 of 43 and 41 nM for cytoplasmic Ca2+ concentrations and parathyroid hormone secretion, respectively.

NSC-23026, also known as MSX-127, is a CXCR4 receptor modulator.

NVP-QAV680 is a potent and selective CRTh2 receptor antagonist suitable for clinical testing in allergic diseases.

Octreotide acetate, a long-acting synthetic analog of native somatostatin, inhibits growth hormone, glucagon, and insulin more potently.

Olanzapine(LY170053) is a high affinity for 5-HT2 serotonin and D2 dopamine receptor antagonist.

Olcegepant hydrochloride is the first potent and selective non-peptide antagonist of the calcitonin gene-related peptide 1 (CGRP1) receptor with IC50 of 0.03 nM and with a Ki of 14.4 pM for human CGRP.

Olcegepant(BIBN 4096; BIBN 4096BS) is the first potent and selective non-peptide antagonist of the calcitonin gene-related peptide 1 (CGRP1) receptor(IC50= 0.03 nM).

Olmesartan Acid is an angiotensin II receptor antagonist that prevents the binding of angiotensin II, thus preventing vasoconstriction.