Oleoylsulfamide is a cannabinoid receptor 1 inhibitor.

OK-1035 is a selective DNA-dependent protein kinase (DNA-PK) inhibitor with an IC50 of 100 μM.

OICR19451 is an orally active dual NUAK1/NUAK2 and MARK2/MARK3 kinase inhibitor, with IC50 values of 12 nM and 10 nM against NUAK1 and NUAK2, and 101 nM and 124 nM against MARK2 and MARK3, respectively. OICR19451 modulates the Hippo signaling pathway, increases the phosphorylation level of YAP, enhances the cytoplasmic localization of YAP/TAZ, and inhibits the expression of oncogenes. OICR19451 inhibits cancer cell growth, reduces metastasis, promotes tumor capsule formation, and improves mouse survival in an orthotopic breast cancer model. OICR19451 can be used for research related to triple-negative breast cancer.

OH14 is a cellular FLICE-like inhibitory protein (cFLIP) inhibitor and TNF-related apoptosis-inducing ligand (TRAIL) sensitizer. OH14 selectively binds to the DED1 pocket of cFLIP, disrupting its recruitment to the TRAIL-death inducing signalling complex without affecting procaspase-8 recruitment to FADD, allowing procaspase-8 activation. OH14 promotes TRAIL-mediated apoptosis and impairs cell viability in breast cancer systems when combined with TRAIL. OH14 can be used for the research of breast cancer.

Octoclothepine (Clorotepine), an analog of Clozapine, is a neuroleptic and antipsychotic agent. Octoclothepine exists in enantiomeric forms, where the (+)-form acts as an atypical antipsychotic, while the (-)-functions as a typical antipsychotic. (+)-Octoclothepine exhibits extremely high binding affinity for 5-HT₆ and 5-HT₇ receptors, with Ki values of 0.41 and 0.38 nM; the Ki values of (-)-Octoclothepine are 17.7 and 1.3 nM, respectively. Octoclothepine can be used in research related to schizophrenia.

Cholesterol-conjugated OC prodrug (Compound 1b) is an orally active cholesterol-bound prodrug of Oseltamivir carboxylate. Cholesterol-conjugated OC prodrug has a protective effect against influenza virus infection. The Oseltamivir carboxylate released by the Cholesterol-conjugated OC prodrug has a longer duration of circulation than the Oseltamivir carboxylate released from Oseltamivir. Cholesterol-conjugated OC prodrug can be used in influenza research.

O-Carboranylphenoxyacetanilide-1,7-dicarbadodecaboran(12) is a boron-containing organic compound.

OCA 983 is an orally active tetrahydrofuranyl 1β-methylcarbapenem antibiotic. OCA 983 exhibits potent inhibitory activity against class A and class C β-lactamases. OCA 983 possesses a broad antibacterial spectrum, and can be used in the research of infectious diseases.

Oberadilol (CID-3047798) is an ACE2 receptor binding agent. Oberadilol binds to the human ACE2 receptor and SARS-CoV proteins (Spike S glycoprotein, protease) with a Kd of 23.18 mM for the SARS-CoV-2 main protease.

O-1812 is a selective CB1 ligand. O-1812 is also a very weak AMT inhibitor. O-1812 can be used in the research of chronic pain, migraines, and inflammation.

NVP CXCR2 20 is a selective CXCR2 inhibitor with analgesic and antinociceptive activities. NVP CXCR2 20 selectively blocks CXCR2 signaling and attenuates mechanical and thermal hypersensitivity in rat chronic constriction injury (CCI) models. NVP CXCR2 20 inhibits CXCL3-induced hypersensitivity in naive mice and reduces elevated CXCL3 protein levels in the spinal cord and dorsal root ganglia (DRG) of CCI-exposed rats. NVP CXCR2 20 can be used for the research of neuropathic pain and chronic obstructive pulmonary disease (COPD).

Nurr1/RXR dual agonist 1 is a dual activator of Nurr1 (EC50 = 2.6 µM) and RXR with Ks of 0.6 and 1.1 µM, respectively. Nurr1/RXR dual agonist 1 exclusively activates the heterodimer response element DR5 by selectively destabilizing the Nurr1 homodimer and stabilizing the Nurr1:RXR heterodimer. Nurr1/RXR dual agonist 1 enhances expression of a specific subset of neuroprotective Nurr1 target genes while avoiding induction of genes associated with potential off-target effects in neuronal cells. Nurr1/RXR dual agonist 1 can be used for neurodegenerative diseases research.

NTPDase/NPP1-IN-1 is an ectonucleotidase (NTPDase) and nucleotide pyrophosphatase/phosphodiesterase 1 (NPP1) inhibitor, with IC50 values of 0.28, 0.92, 0.82 and 0.73 μM against h-NTPDase1, h-NTPDase2, h-NTPDase3 and h-NPP1, respectively. NTPDase/NPP1-IN-1 is a membrane-interacting agent that localizes to the plasma membrane and interacts with cancer cells. NTPDase/NPP1-IN-1 can be used in the research of breast cancer.

NSP-DMAE-HEG-Giu-NHS (Fig.18) is an activated labeling reagent containing acridine ester, and it is a key component of Cyclosporine A tracers.

NSD-IN-5 (Example 47) is a nuclear receptor-binding SET domain (NSD) inhibitor with IC5050 values ​​of 6 and < 1 nM for NSD1 and NSD2, respectively. NSD-IN-5 also exhibits inhibitory activity against Avg KMS11 cells with an IC5050 of 6 nM. NSD-IN-5 may be used in research on multiple myeloma.

NSD2-PWWP1-IN-5 (Compound 13) is an effective NSD2-PWWP1 inhibitor with a Kd value of 78 nM. NSD2-PWWP1-IN-5 competitively blocks the recognition of H3K36me2 and DNA by NSD2-PWWP1, thereby weakening its binding ability to nucleosomes. NSD2-PWWP1-IN-5 inhibits the proliferation of U2OS osteosarcoma cells and induces cell cycle arrest and apoptosis. NSD2-PWWP1-IN-5 can be used for the study of osteosarcoma.

NSC-624871 (JD-87), an analog of Miltefosine, is natural killer T-2 (NKT-2) activator. NSC-624871 activates type II NKT cells. NSC-624871 can be used for the study of SARS-CoV-2-mediated inflammatory conditions.

NSC127916 (compound Ib) is a 2,6-diaminopurine analogue of Methotrexate.

NSC126188 is a RhoB inducer. NSC126188 can induce apoptosis by inhibiting Akt/FoxO3 signaling. NSC126188 can be used for the research of cancer, such as prostate cancer.

NSC 660028 is a DNA topoisomerase II (DNA topoisomerase II) inhibitor with an ID50 of 50 μM. NSC 660028 inhibits DNA topoisomerase II and induces protein-linked DNA breaks. NSC 660028 can be used for cancer research.

NSC 121182 is a compound selected from NCI Diversity Set II by structure-based virtual screening. NSC 121182 can be used to study the Vitronectin-uPAR interaction. NSC 121182 can be used for cancer research.

NSC 1008 is a selective Ras converting enzyme 1 (Rce1) inhibitor that reduces Rce1 in vitro activity with a human IC50 of 8.9 μM. NSC 1008 demonstrates selectivity for Rce1 by not inhibiting human Ste24 or huamn FTase. NSC 1008 exhibits low cell toxicity, and induces mislocalization of EGFP-Ras from the plasma membrane in cancer cells. NSC 1008 can be used for the research of cancer.

NS8593 is an SK channel (small conductance Ca2+-activated K+ channels) inhibitor. NS8593 reversibly inhibited recombinant SK3-mediated currents (human SK3 and rat SK3). NS8593 inhibits all the SK1-3 subtypes Ca2+-dependently (Kd = 0.42, 0.60, and 0.73 μM, respectively, at 0.5 μM Ca2+). NS8593 does not affect the Ca2+-activated K channels of intermediate and large conductance (hlk and hBK channels, respectively). NS8593 can also inhibit TRPM7 (melastatin-related TRP cation channel 7) (IC50 = 1.6 mM). NS8593 can be used for the study of central nervous system (CNS) related diseases.

NS-181 is a MetAP2 inhibitor and antiamebic agent with oral effectiveness.NS-181 functionally inhibits methionine aminopeptidase 2, a protein critical for Entamoeba histolytica proliferation. NS-181 exerts antiamebic activity against Entamoeba histolytica, leading to resolution of amebic liver abscess. NS-181 can be used for the research of amebiasis.

NPSR1 modulator-1 is a NPSR1 modulator.

N-Phosphotaurocyamine (Taurocyamine phosphate) is a phosphagen in Arenicola, the stores of phosphotaurocyamine are an energy source which can be used for rapid regeneration of ATP.

NPFFR2 modulator-1 (compound 11) is a NPFFR2 modulator.

NPD15261 (MI102) is a highly selective MYCN inhibitor. NPD15261 reduces the mRNA and protein levels of MYCN in liver cancer cells, inhibits cell proliferation and colony formation, and induces Apoptosis simultaneously. NPD15261 can be used in liver cancer research.

NPC 573 is a Bradykinin analog. NPC 573 inhibits contraction of the uterus.

North-methanocarbathymidine (N-MCT) is a potent antiviral agent. North-methanocarbathymidine inhibits DNA synthesis. North-methanocarbathymidine demonstrates potent antiviral activity against HSV-1, HSV-2 and KSHV. North-methanocarbathymidine exhibits anticancer activity against colon adenocarcinoma expressing HSV-tk.