Pifithrin-α is an inhibitor of p53, inhibiting p53-dependent transactivation of p53-responsive genes.

Pifithrin-β HBr (Cyclic Pifithrin-α HBr) is a potent p53 inhibitor with IC50 of 23 uM in an antiproliferative assay in the human ovarian carcinoma cell line, IGROV-1.

Pifithrin-μ is a specific p53 inhibitor by reducing its affinity to Bcl-xL and Bcl-2, and also inhibits HSP70 function and autophagy.

PIK-293 is a PI3K inhibitor, mostly for PI3Kδ with IC50 of 0.24 μM, 500-, 100- and 50-fold less potent to PI3Kα/β/γ, respectively.

PIK-294 is a highly selective p110δ inhibitor with IC50 of 10 nM, 1000-, 49- and 16-fold less potent to PI3Kα/β/γ, respectively.

PIK-75 is a p110α inhibitor with IC50 of 5.8 nM (200-fold more potently than p110β), isoform-specific mutants at Ser773, and also potently inhibits DNA-PK with IC50 of 2 nM.

PIK-90 is a potent and cell permeable inhibitor of p110α, p110β, p110γ and p110δ with IC50 of 11 nM, 350 nM, 18 nM and 58 nM, respectively.

PIK-93 is the first potent, synthetic PI4K (PI4KIIIβ) inhibitor with IC50 of 19 nM; shown to inhibit PI3Kα with IC50 of 39 nM.

PIK-III, which is a selective inhibitor of ​VPS34 enzymatic activity, inhibits autophagy and de novo lipidation of LC3 and leads to the stabilization of autophagy substrates.

Pilaralisib (SAR245408; XL147) is selective oral pan-PI3K inhibitor.

PIM447 is novel pan-PIM kinase inhibitor, including Moloney Murine Leukemia (PIM) 1, 2, and 3 Kinase.

Pimavanserin(ACP-103) is a potent and selective 5-HT2A receptor inverse agonist with mean pIC50 of with 8.7 in the cell-based functional assay.

Pimecrolimus is an immunophilin ligand, which binds specifically to the cytosolic receptor, immunophilin macrophilin-12.

Pimelic diphenylamide 106 is a slow, tight-binding inhibitor of class I HDAC (HDAC 1, 2, and 3, with IC50 values of 150 nM , 760nM, and 370 nM, respectively), demonstrating no activity against class II HDACs.

Pimobendan is a selective inhibitor of PDE3 with IC50 of 0.32 μM.

Pimodivir(VX-787) is a novel inhibitor of influenza virus replication that blocks the PB2 cap-snatching activity of the influenza viral polymerase complex. 

Pimozide is an antipsychotic agent that acts as an antagonist of the D2, D3, and D4 receptors and the 5-HT7 receptor, also is an inhbitor of STAT5.

Pinacidil monohydrate, an antihypertensive drug, is a potassium channel activator.

Pioglitazone Hydrochloride is the hydrochloride salt preparation of Pioglitazone, a specific ligand of PPAR-γ (peroxisome proliferator-activated receptor-γ). Pioglitazone is a thiazolidinedione compound described to produce antiinflammatory and antiarteri

Pipequaline (PK 8165) is a partial benzodiazepine receptor agonist with anxiolytic activity.

Piperazine Erastin is an analog of Erastin, which can induces ferroptosis in cancer cells, an iron-dependent form of nonapoptotic cell death..

Piperlongumine induces cell death and increases the level of reactive oxygen species (ROS) in cancer cells with both wild-type and normal p53.