Perampanel(E2007; ER 155055-90) is a selective noncompetitive AMPA-type glutamate receptor antagonist which has demonstrated anticonvulsant activity in experimental seizure models and antiepileptic activity in clinical trials.

PEPA is an allosteric modulator of AMPA receptors; binds to the GluA2o and GluA3o LBDs and can be utilized as an indicator of AMPA receptor heterogeneity.

Pemigatinib is a selective FGFR inhibitor in development for the treatment of patients with cholangiocarcinoma.

Pemetrexed disodium is a novel antifolate and antimetabolite for TS, DHFR and GARFT with Ki of 1.3 nM, 7.2 nM and 65 nM, respectively.

Pemafibrate is an orally bioavailable and selective agonist of peroxisome proliferator-activated receptor α (PPARα; EC50 = 1 nM for transcriptional activity), a transcription factor that is essential for regulation of lipid homeostasis.

Pelitinib (EKB-569; WAY-EKB 569) is a potent irreversible EGFR inhibitor with IC50 of 38.5 nM.

PD168393 is potent, cell-permeable, irreversible and selective inhibitor of EGF receptor (EGFR) tyrosine kinase and ErbB2.

PD-168077 maleate is a selective dopamine D4 receptor agonist, with a Ki of 9 nM.

PD-166866 is a selective inhibitor of the FGF-1 receptor tyrosine kinase (FGFR1) with IC50 = 55 nM, and no effect on c-Src, PDGFR-b, EGFR or insulin receptor tyrosine kinases or MEK, PKC, and CDK4.

PD158780 is a very potent inhibitor of EGFR with IC50 of 0.08 nM; pan-specific antagonist of ErbB receptor.

PD153035 is a potent and specific inhibitor of EGFR with Ki and IC50 of 5.2 pM and 29 pM; little effect noted against PGDFR, FGFR, CSF-1, InsR and Src.

PD-1/PD-L1 inhibitor 2 is reported to prevent the interaction of PD-L1 with PD-1 with an IC50 value of 18 nM,a useful compound immunomodulator compound.

PD-1/PD-L1 inhibitor 1 is a PD-1/PD-L1 interaction inhibitor,IC50 values: 0.006-0.10 μM,a useful immunomodulator compound.

PD0325901 (PD325901) is selective and non ATP-competitive MEK inhibitor with IC50 of 0.33 nM.

PD 153035(AG-1517) is an ultra-potent inhibitor of epidermal growth factor receptor tyrosine kinase (EGFRK), with an IC50 of 25 pM.

PD 150606 is a selective, cell-permeable non-peptide calpain inhibitor (Ki values for ν and m-calpains are 0.21 and 0.37 μM respectively).

PCI-32765 (Ibrutinib) is a potent and highly selective Btk inhibitor with IC50 of 0.5 nM.

PCI 29732 is a selective and irreversible Btk inhibitor with IC50 of 8.2 nM in a FRET based biochemical enzymology assay.

PBTZ169 is a decaprenyl-phosphoribose-epimerase (DprE1) inhibitor.

PBIT is a potent, cell-permeable inhibitor of Jumonji histone demethylase (JHDM). Innhibits JARID1B (also known as KDM5B or PLU1) with an IC₅₀ of about 3 μm in vitro.

Pazopanib Hcl (GW-786034) is a novel multi-target inhibitor of VEGFR1, VEGFR2, VEGFR3, PDGFR, FGFR, c-Kit and c-Fms with IC50 of 10 nM, 30 nM, 47 nM, 84 nM, 74 nM, 140 nM and 146 nM, respectively.

Parthenolide is a sesquiterpene lactone from the plant feverfew (T. parthenium).

Paroxetine hydrochloride hemihydrate is a antidepressant agents known as selective serotonin-reuptake inhibitors (SSRIs).

Pardoprunox(SLV-308) 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 (IA = 50% and 67%, respectively) and 5-HT1A receptor (pKi = 8.5) full agonist (IA

Panobinostat(LBH-589) is a broad-spectrum HDAC inhibitor; low nanomolar concentrations (IC50=5-20 nM) of LBH589 induced cell-cycle arrest, apoptosis, and histone (H3K9 and H4K8) hyperacetylation in MOLT-4 and Reh cell.

Palovarotene (R-667, RO-3300074) is a selective retinoic acid receptor gamma(RAR-γ) agonist for the treatment of emphysema.

Palbociclib isethionate(PD-0332991 isethionate) is a highly specific inhibitor of Cdk4 (IC50=11 nM) and Cdk6 (IC50=16 nM), having no activity against a panel of 36 additional protein kinases.

Palbociclib is an oral, small molecule cyclin-dependent kinase 4/6 (CDK4/6) inhibitor, now in Phase 3 clinical development for advanced breast cancer.

Palbociclib (PD-0332991) is an orally available pyridopyrimidine-derived cyclin-dependent kinase (CDK) inhibitor with potential antineoplastic activity.

Paclitaxel is a microtubule polymer stabilizer with IC50 of 0.1 pM in human endothelial cells.