Ro 46-2005 is a novel synthetic non-peptide endothelin receptor antagonist, inhibits the specific binding of 125I-ET-1 to human vascular smooth muscle cells (ETA receptor) with IC50 of 220 nM.

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.

RO4929097 is a γ secretase inhibitor with IC50 of 4 nM, inhibiting cellular processing of Aβ40 and Notch with EC50 of 14 nM and 5 nM, respectively.

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.

RO5028442 is a highly potent and selective Brain-Penetrant Vasopressin 1a (V1a) receptor antagonist with Kis of 1 nM (hV1a) and 39 nM (mV1a).

RO8994 is a potent and selective spiroindolinone MDM2 inhibitor for cancer therapy.

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

Roscovitine (Seliciclib, CYC202, R-roscovitine) is a potent and selective CDK inhibitor for Cdc2/cyclin B, CDK2/cyclin A, CDK2/cyclin E and CDK5/p53 with IC50 of 0.65 μM, 0.7 μM, 0.7 μM and 0.16 μM, respectively.

Rostafuroxin: an ouabain-inhibitor counteracting specific forms of hypertension.

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

RQ-00203078 is a potent TRPM8 antagonist (IC50 values are 5.3 and 8.3 nM for rat and human channels respectively).

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.

Rucaparib (AG-014699, PF-01367338) is an inhibitor of PARP with Ki of 1.4 nM with binding affinity to nine PARP domains. Phase 1/2.

Rucaparib inactivates PARP activity in cells with homologous recombination DNA repair pathway mutations at LC50 values ranging from 1.3-5.5 μM.

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.

S 38093 is a novel brain-penetrant antagonist/inverse agonist of H3 receptors.

S1RA(E-52862) is a potent and selective sigma-1 receptor(σ1R, Ki=17 nM), showed good selectivity against σ2R (Ki > 1000 nM).

S49076 is a novel kinase inhibitor of MET, AXL, and FGFR with strong preclinical activity alone and in association with bevacizumab.

S49076 is a novel, potent inhibitor of MET, AXL/MER, and FGFR1/2/3 with IC50 values below 20 nM.

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.

Salermide is an inhibitor of SIRT1 and SIRT2, causing tumor-specific apoptotic cell death. In MOLT4 leukemia cells, salermide causes 90% apoptosis within 72 hours (IC50 ~ 20 μM) by reactivating proapototic genes that are repressed by SIRT1.

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

Salmeterol Xinafoate is a long-acting β2-adrenergic receptor agonist with anti-inflammatory effects, used in the treatment of asthma symptoms and chronic obstructive pulmonary disease (COPD) symptoms.

Salmeterol Xinafoate is a long-acting β2-adrenergic receptor agonist with anti-inflammatory effects, used in the treatment of asthma symptoms and chronic obstructive pulmonary disease (COPD) symptoms.

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.

Sapitinib(AZD8931) is a reversible, ATP competitive inhibitor of EGFR, ErbB2 and ErbB3 with IC50 of 4 nM, 3 nM and 4 nM respectively.