OR59402;NSC 48107 is a bioactive compound.

OSI-906 (Linsitinib) is a selective inhibitor of IGF-1R and IR with IC50 of 35 nM and 75 nM, respectively.

OSI-930 is a potent inhibitor of Kit, KDR and CSF-1R with IC50 of 80 nM, 9 nM and 15 nM, respectively; also potent to Flt-1, c-Raf and Lck and low activity against PDGFRα/β, Flt-3 and Abl.

Otenabant (CP945598) is a recently discovered selective, high affinity, competitive CB1 receptor antagonist with Ki of 0.7 nM.

OTSSP167 is a highly potent MELK inhibitor (IC50 = 0.41 nM) and inhibited the phosphorylation of PSMA1 (proteasome subunit alpha type 1) and DBNL (drebrin-like).

Oxamflatin is a potent inhibitor of histone deacetylases (IC50 = 15.7 nM).

P7C3-A20 is an analogue of P7C3，a proneurogenic, neuroprotective agent.

PA-824 is an anti-tuberculosis drug for tuberculosis with MIC less than 2.8 μM.Phase 2.

PAK4-IN-1 is an inhibitor of p21-activated kinases (PAKs), with IC50 of ≤100 nM in MTT assay.

Palifosfamide is a novel molecule for the treatment of sof tissue sarcoma.

Palosuran (ACT-058362) is a new potent and specific antagonist of the human UT receptor with an IC50 of 3.6±0.2 nM.

Pamapimod（R-1503）is a novel p38 MAP kinase inhibitor.

Pardoprunox hydrochloride is a novel partial dopamine D2 and D3 receptor agonist and serotonin 5-HT1A receptor agonist, D2 (pKi = 8.1) and D3 receptor (pKi = 8.6) partial agonist and 5-HT1A receptor (pKi = 8.5) full agonist.

Pargyline is an irreversible inhibitor of monoamine oxidase (MAO; Kis = 15 and 1.8 μM for MAO-A and MAO-B, respectively).

Parimifasor is an immunomodulator, with anti-inflammatory activity.

Paulownin can highly inhibit the growth of H. pylori and exhibits strong inhibitory specificity against H. pylori related to E. coli.

Pazopanib is a potent and selective multi-targeted receptor tyrosine kinase inhibitor of VEGFR1, VEGFR2, VEGFR3, PDGFR-α/β, and c-Kit.

PCI-27483 is a selective small molecule inhibitor of activated coagulation factor VII (FVIIa), which is in preclinical development as a novel anti-cancer agent.

PCI-34051 is a potent and specific HDAC8 inhibitor with IC50 of 10 nM.

PD 98059 is a selective inhibitor of MEK and blocker of MAPK

PD0166285 is a potent Wee1 and Chk1 inhibitor with activity at nanomolar concentrations.PD0166285 is a novel G2 checkpoint abrogator.

PD169316 is a potent and selective p38 MAP kinase inhibitor

PD173074 is a potent FGFR1 inhibitor with IC50 of ~25 nM and also inhibits VEGFR2 with IC50 of 100-200 nM.

PDM 2 is an analog of resveratrol acting as a potent and selective aryl hydrocarbon receptor (AhR) antagonist, with a Ki of 1.2 nM.

Pentamidine Dihydrochloride(MP601205 dihydrochloride) is an antimicrobial agent.

PF-04418948 is an orally active, potent, and selective EP2 receptor antagonist (IC50 = 16 nM).

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

PF-06447475 is a highly potent, selective, brain penetrant LRRK2 inhibitor with IC0 of 3 nM/11 nM for Wt LRRK2/G2019S LRRK2 respectively.

PF-06454589 is a potent and selective LRRK2 inhibitor.

PF-06840003 is an orally available hydroxyamidine and inhibitor of indoleamine 2,3-dioxygenase 1 (IDO1),with potential immunomodulating and antineoplastic activities.