OGT inhibitor 4a (OSMI-4 active form) is a novel potent, selective O-linked N-acetylglucosamine transferase (OGT) inhibitor with Kd of 8 nM, the active form of OSMI-4..

Officinalisinin I is a steroidal saponin, isolated from Anemarrhena asphodeloides.

ODQ (sGC inhibitor ODQ) is a potent, selective, irreversible inhibitor of sGC (soluble guanylyl cyclase).

Odalasvir (ACH-3102, JNJ-64289901) is a potent, second-generation HCV NS5A inhibitor in development for the treatment of hepatitis C..

Octahydrocurcumin is a hydrogenated derivatives of curcumin; metabolite of curcumin.

OBP-801 (YM 753;Spiruchostatin A) is a novel cyclic-peptide-based HDAC inhibitor with IC50 of 2 nM.

OBE022 is a potent, highly selective, orally active antagonist of the contractile PGF2α prostaglandin receptor with Kb of 5.9 nM, shows no activity for other human PG receptors subtypes.

OBA-09 is a simple ester of pyruvate and salicylic acid, main metabolites of pyruvate and aspirin, respectively, exerts robust neuroprotective effect in the postischemic brain in vivo.

OAT-1746 is a novel potent, selective, orally active inhibitors of Arginase 1 and 2 (ARG1/2) with IC50 of <50 nM.

OADS is a specific, reversible, small-molecule inhibitor directs against CLC (Chloride Channel) antiporter with Ki of 29 uM, has no specific effect on a CLC channel (ClC-1). .

O-1602 (O1602) is an atypical cannabinoid, potent and selective agonist of GPR55 cannabinoid receptor with EC50 of 13 nM, shows no significant activity for CB1 and CB2 receptors (EC50>30 uM).

NY-0173 is a potent Exchange proteins directly activated by cAMP (EPAC) inhibitor with IC50 of 4.0 uM for EPAC1..

NY0128 (NY 0128) is a small molecule neuromedin U receptor 2 (NMUR2) with EC50 of 29.99 uM for hNMUR1 and 10.30 uM for hNMUR2 in intracellular calcium mobilization assays.

NY-0123 is a novel potent Exchange proteins directly activated by cAMP (EPAC) antagonist with IC50 of 0.9 and 2.4 uM for EPAC1 and EPAC2, respectively.

NY0116 (NY 0116) is a small molecule neuromedin U receptor 2 (NMUR2) with EC50 of 27.76 uM for hNMUR1 and 13.61 uM for hNMUR2 in intracellular calcium mobilization assays.

NXY-059 (Cerovive) is an EGFR and HER2 autophosphorylation inhibitor, against purified EGFR and HER2 of 10.2 and 9.8 nM, respectively.

NXL101 is a novel quinoline bacterial DNA gyrase and topoisomerase IV inhibitor that shows potent activity against gram-positive bacteria, including methicillin- and fluoroquinolone-resistant strains.

NVS-CRF38 is a potent, selective, orally bioavailable corticotropin-releasing factor receptor 1 (CRF1) antagonist with IC50 of 70 nM..

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

NVP-QAV-572 is a potent PI3K kianse inhibitor with IC50 of 10 nM.

NVP-BAG956(BAG 956) is a potent, ATP-competitive and selective dual PI3K and PDK1 inhibitor in vitro and in vivo,with IC50 values to be 56, 444, 34, 117 and 240 nM for PI3K p110 alpha, beta, delta and gamma and PDK1 kinases, respectively.

NVP-231 is a potent, specific, and reversible CerK inhibitor(IC50=12±2 nM) that competitively inhibits binding of ceramide to CerK.

NV03 is a small-molecule antagonist of the H3K9me3 binding to UHRF1 tandem tudor domain with Kd of 2.4 uM..

NV01 is a small-molecule antagonist of the H3K9me3 binding to UHRF1 tandem tudor domain (TTD) with Kd of 5 uM..

Nutlin-3b is 150-fold less potent as an inhibitor of p53-MDM2 interaction than (−)-nutlin-3, demonstrating an IC50 value of 13.6 µM.

Nuclear yellow (Hoechst S769121) exhibits excitation/emission maxima ~335/495 nm when bound to DNA.

NTRC-844 (NTRC844) is a potent, selective neurotensin receptor type 2 (NTS2) with Ki of 23 nM, 100-fold selectivity over NTS1 receptor.

NTCP binder peptide WL4 is a macrocyclic peptide, pan-genotypic inhibitor of HBV cellular entry via targeting the cell-surface receptor for HBV, sodium taurocholate cotransporting polypeptide (NTCP, Kd=42 nM), reduces HBs antigen levels in culture supernatants with IC50 of 0.66 uM.

NTCP binder peptide WD1 is a macrocyclic peptide, pan-genotypic inhibitor of HBV cellular entry via targeting the cell-surface receptor for HBV, sodium taurocholate cotransporting polypeptide (NTCP, Kd=15 nM), reduces HBs antigen levels in culture supernatants.

NSC668394 (NSC 668394) is a small molecule inhibitor of ezrin, directly bind to ezrin with Kd of 12.59 uM.