PF-04449913 is a potent and orally bioavailable inhibitor of smoothened with IC50 of 5 nM(Gli-luciferase reporter reporter in C3H10T1/2); the hedgehog pathway inhibitor

PF-04217903 is a selective ATP-competitive c-Met inhibitor with IC50 of 4.8 nM, susceptible to oncogenic mutations (no activity to Y1230C mutant).

PF-03084014 (PF-3084014) is a selective gamma-secretase inhibitor with IC50 of 6.2 nM in a cell-free assay. Phase 2.

PF 670462 is a selective casein kinase, CK1ε and CK1δ inhibitor which also shows potency against 42 other kinases.

PF 573228 is a inhibitor of FAK with IC50 of 4 nM.

PF 1022A is a N-methylated cyclooctadepsipeptides (CODPs) with strong anthelmintic properties; acts as an ionophore.

PF 05089771 is a Nav1.7 channel blocker extracted from patent WO/2010/079443 A1, compound example 788, has an IC50 of 8.6 nM.

Perifosine (KRX-0401) is a novel Akt inhibitor with IC50 of 4.7 μM.

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).