Oritavancin is a lipoglycopeptide with bactericidal activity against gram-positive bacteria.

Oritavancin is a semisynthetic glycopeptide antibiotic that inhibits the growth of Gram-positive bacteria.

ORM-10962 is a potent, highly selective sodium-calcium exchanger (NCX) inhibitor, significantly reduces inward/outward NCX currents with IC50 of 55 and 67 nM, respectively.

ORM-15341 is a potent and full antagonist for human AR (hAR) with IC50 values of 38 nM as shown by transactivation assays in AR-HEK293 cells stably expressing full-length hAR and an androgen-responsive luciferase reporter gene construct.

Orvepitant (GW823296) is a potent and selective, brain penetrant NK1 receptor antagonist with pKi of 10.2.

Oseltamivir acid (GS 4071, Ro 64-0802, Oseltamivir carboxylate) is a potent inhibitor of influenza neuraminidase (NA) with Ki of <1 nM for both A and B strains,showed potent activity against COVID-19(SARS-COV-2).

OSI-027 is a selective and potent dual inhibitor of mTORC1 and mTORC2 with IC50 of 22 nM and 65 nM, respectively.

OSI-420 (Desmethyl Erlotinib,CP-473420) is an active metabolite of erlotinib which is an orally active EGFR tyrosin kinase inhibitor with IC50 of 2 and 20 nM for human EGFR and EGFR autophosphorylation in tumor cells.

OSMI-1 is a cell-permeable, small molecule O-GlcNAc transferase (OGT) inhibitor with IC50 of 2.7 uM.

OSMI-4 (OGT inhibitor 4b) is a novel potent, selective, cell-active O-linked N-acetylglucosamine transferase (OGT) inhibitor with EC50 of ~3 uM.

OSU-03012(AR-12) is a potent inhibitor of recombinant PDK-1 with IC50 of 5 μM and 2-fold increase in potency over OSU-02067.

OSW-1 is a natural anti-enterovirus and anti-cancer compound that targets oxysterol-binding protein (OSBP) with Ki of 26 and 54 nM for OSBP and ORP4L, respectively.

Otamixaban(FXV673) is a potent (Ki = 0.5 nM), selective, rapid acting, competitive and reversible fXa inhibitor that effectively inhibits both free and prothrombinase-bound fXa.

Otilonium Bromide is an antimuscarinic used as a spasmolytic agent.

OTS186935 (OTS-186935) is a potent, in vivo-active inhibitor of protein methyltransferase SUV39H2 with IC50 of 6.49 nM, inhibits A549 cell growth with IC50 of 0.67 uM; causes a significant growth inhibitory effect in mouse xenograft models using MDA-MB-231 breast cancer cells as well as A549 lung cancer cells, at 25 mg/kg once daily for 14 days yielded a TGI of 60.8%; attenuates the levels of H3K9me3 in A549 xenograft mouse model.

OTS193320 (OTS-193320) is a potent inhibitor of protein methyltransferase SUV39H2 with IC50 of 22.2 nM.

OUL35 (NSC39047) is a potent and selective inhibitor of mono-ADP-ribosyltransferase PARP10/ARTD10 with IC50 of 330 nM, displays remarkable selectivity towards ARTD10 over other enzymes in the human protein family.

OUL35 derivative 32 is a potent and selective inhibitor of mono-ADP-ribosyltransferase PARP10/ARTD10 with IC50 of230 nM, rescues HeLa cells from ARTD10-induced cell death..

OUP-16 is a potent H4R agonist with a considerable selectivity over H3R..

o-vanillin (C29L.

OX-14 is a highly potent farnesyl pyrophosphate synthase (FPPS) inhibitor with IC50 of 2.46 nM, with significantly lower binding affinity to hydroxyapatite.

Oxadiazon is a preemergent herbicide.