Psoralidin possesses potent antidepressant-like, anti-inflammatory, anticancer and chemopreventive properties. Psoralidin is a dual inhibitor of COX-2 and 5-LOX

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.

Ezeprogind (AZP-2006) disulfate is an orally active neurotrophic inducer. Ezeprogind disulfate targets all causes of neurodegeneration and is not only aiming at markers such as Abeta protein or tau protein. Ezeprogind disulfate is a potent neuroprotectant and can be used for the research of neurological disorders, including progressive supranuclear palsy (PSP), tauopathies, alzheimer’s and parkinson’s diseases, et al.

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.