PTP1B-IN-2 is a novel protein tyrosine phosphatase-1B (PTP1B) inhibitor.

PTZ-343 is a phenothiazine derivative with chemical name: sodium 3-(10H-phenothiazin-10-yl)propane-1-sulfonate.

Pyronaridine, also known as Malaridine, is an antimalarial drug.

PZ-2891 is a specific, allosteric, BBB-permeable, orally active Pantothenate kinase (PANK) modulator, acting as both an orthosteric inhibitor (IC50=1.3 nM, hPANK3) and an allosteric activator of PANK3 activity in the presence of acetyl-CoA in biochemical

QCC-374 is prostanoid agonist potentially for the treatment of pulmonary arterial hypertension.

Questiomycin A is a phenoxazine and a chromophore that has been found in Streptomyces and has antibacterial and anticancer activities.

Quinupristin/dalfopristin, or quinupristin-dalfopristin is a combination of two antibiotics used to treat infections by staphylococci and by vancomycin-resistant Enterococcus faecium.

QX77 is a chaperone-mediated autophagy (CMA) activator.

R1487 is a p38 MAP kinase inhibitor with an IC50 of 10nM. It may have potential as a treatment for inflammatory diseases such as rheumatoid arthritis.

R1487 is a p38 MAP kinase inhibitor with an IC50 of 10nM. It may have potential as a treatment for inflammatory diseases such as rheumatoid arthritis.

R-7050 is a tumor necrosis factor receptor (TNFR) antagonist with greater selectivity toward TNFα.

Radiprodil is an orally active and selective NMDA NR2B antagonist; a potential therapeutic agent in treatment of neuropathic pain and possibly other chronic pain conditions.

Relugolix is a novel, non-peptide, orally active gonadotropin-releasing hormone (GnRH) antagonist with IC50 of 0.33 nM in the presence of 40% fetal bovine serum, TAK-385 possesses higher affinity and potent antagonistic activity compared with TAK-013.

RG7388 is an oral, selective, small molecule MDM2 antagonist that inhibits binding of MDM2 to p53.

RITA (NSC 652287) is a DNA damaging agent with IC50 of 2 nM and 20 nM in A498 and TK-10 cells.

RK-287107 (RK287107) is a novel potent, tankyrase-specific inhibitor with IC50 of 14.3 and 10.6 nM for tankyrase-1 and tankyrase-2, respectively, shows no activity against PARP-1.

Ro 48-8071 fumarate is an inhibitor of OSC(Oxidosqualene cyclase; IC50=6.5 nM) that has low-density lipoprotein (LDL) cholesterol lowering activity.

RO3280 is a potent, highly selective inhibitor of Polo-like kinase 1 (PLK1) with IC50 of 3 nM.

Roflumilast N-oxide is a phosphodiesterase 4 inhibitor. Roflumilast N-oxide is the active metabolite of roflumilast.

RPI-1 is a cell-permeable ATP-competitive tyrosine kinase inhibitor

RR6 is a selective, reversible, and competitive vanin inhibitor.

RRx-001 is a novel epigenetic modulator with potential radiosensitizing activity. It inhibits glucose 6-phosphate dehydrogenase(G6PD) in human tumor cells, binds hemoglobin and drives RBC-mediated redox reactions under hypoxia.

Rubusoside is a natural sweetener and a solubilizing agent with antiangiogenic and antiallergic properties.Rubusoside can improve the survival rate of palmitic acid- induced INS- 1 cells and inhibit the occurrence of apoptosis.

S 38093 is a brain-penetrant antagonist of H3 receptor, with Ki of 8.8, 1.44 and 1.2 µM for rat, mouse and human H3 receptors, respectively.

SA4503 is a selective sigma 1 receptor(σ1R) agonist; high affinity for the sigma 1 receptor subtype labeled by (+)-[3H]pentazocine (IC50 = 17.4 +/- 1.9 nM); 100-fold less affinity for the sigma 2 receptor.

Salirasib is a potent competitive prenylated protein methyltransferase (PPMTase) inhibitor with Ki of 2.6 μM, which inhibits Ras methylation. Phase 2.

Salvianolic acid B is a cell protective antioxidant and free radical scavenger being investigated for a variety of conditions from ischemic heart disorders to Alzheimer′s disease.

Santalol has good antibacterial, anti-oxidation and anti-tumor activities.

SAR348830 is novel potent and selective inhibitor of anaplastic lymphoma kinase (ALK).

SBE13 Hcl is a potent and selective PLK1 with IC50 of 0.2 nM; no inhibition om Aurora A kinase, Plk2 and Plk3.