Robotnikinin is asmall molecule that binds the extracellular Sonic Hedgehog (Shh) protein (Kd=3.1 uM) and blocks Shh-signaling in cell lines, human primary keratinocytes and synthetic model of human skin.

RO-7 is a novel small molecule, broad-spectrum inhibitor of influenza acidic polymerase (PA) protein endonuclease activity with EC50 of 3.2-16 nM in MDCK cells.

RO6889678 is a highly potent inhibitor of HBV capsid formation with attributes that are favorable for targeting the liver, whilst maintaining moderate peripheral exposure..

RO5258638 is a small molecule inhibitor of CDK5-p25 protein-protein interaction..

RO5258638 is a small molecule inhibitor of CDK5-p25 protein-protein interaction with IC50 of 1.39 uM..

RO5126766(CH5126766) is a Raf/MEK dual kinase inhibitor.

RO-51 is a potent, selective and drug-like dual P2X3 and P2X2/3 antagonist with pIC50 of 8.7 and 8.3, respectively..

Ro 64-6198 is a nonpeptidic, selective, brain-penetrant agonist of nociceptin/orphanin FQ receptor (NOP receptor/ORL1) with pKi of 9.41.

Ro 60-0175 is a potent, selective 5-HT2C receptor agonist with pKi of 9, 7.5, 5.4, 5.2 and 5.6 for human 5-HT2C, 2A, 1A, 6 and 7 receptors respectively.

RO 28-2653 is a potent, selective and orally active matrix-metalloproteinases (MMPs) MMP2, MMP9 and MMP14 inhibitor with IC50 of 10, 12 and 10 nM, shows no activity against MMP3 and MMP1 (IC50>1 uM).

Ro 28-1675 (Ro 0281675) is a potent allosteric GK activator with a SC1.5 value of 0.24± 0.0019 uM.

Ro 25-6981 is a potent and selective activity-dependent blocker of NMDA receptors containing the NR2B subunit.

RO 2443 is a potent, dual MDM2/MDMX antagonist that inhibits both MDM2 (IC50=33 nM) and MDMX (IC50=41 nM) binding to p53, but poor water solubility does not allow for a meaningful assessment of its cellular activity..

Ro 08-2750 (Ro 082750) is a potent, selective, non-peptide nerve growth factor (NGF) inhibitor that binds to NGF dimer with Kd of 1 uM.

RNPA2000 is a small-molecule inhibitor of Staphylococcus aureus RnpA-mediated RNA turnover and tRNA processing (IC50=130 uM).

RNPA1000 is a potent, specific small molecule inhibitor of S. aureus RnpA RNA degradation activity (IC50=100-125 uM), limits S. aureus mRNA turnover and growth.

RNase L-IN-2 is a small-molecule activator of RNase L with EC50 of 22 uM.

RK-20449 (RK20449) is a potent, small molecule inhibitor of hematopoietic cell kinase (HCK) with IC50 of 0.43 nM.

RJR-2403 (Rivanicline, Metanicotine) is a potent, selective neuronal nicotinic ACh (nAChR) agonist with high affinity to rat brain cortex (Ki=26 nM), does not significantly activate muscle type nAChRs or muscarinic receptors.

RJR-2403 (Rivanicline, Metanicotine) is a potent, selective neuronal nicotinic ACh (nAChR) agonist with high affinity to rat brain cortex (Ki=26 nM), does not significantly activate muscle type nAChRs or muscarinic receptors.

Rivipansel sodium (GMI-1070, PF-06460031) is a novel small molecule glycomimetic pan-Selectin antagonist with IC50 of 4.3 uM, 423 uM and 337 uM for E-selectin, P-selectin and L-selectin, respectively.

Rislenemdaz (MK 0657.

Rislenemdaz (MK 0657.

RIPK2 inhibitor OD36 is a potent, specific, ATP-competitive inhibitor of RIPK2 with IC50 of 5.3 nM, inhibits Tyr and Ser/Thr-directed activities of RIPK2.

RIPK2 inhibitor 1 is a novel potent, selective RIPK2 inhibitor with IC50 of 5-10 nM.

RIPGBM is a cell type-selective, small molecule inducer of apoptosis in GBM cancer stem cells (CSCs) with EC50 of 220 nM (GBM 1 cells).

RIP1-IN-22 is a highly potent, orally available, and brain-penetrating RIP1 kinase inhibitor with pKi of 9.04.

Rifaximin is an oral, semi-synthetic antibiotic derived from Rifamycin SV with antibacterial activity, interferes with transcription by binding to the β-subunit of bacterial RNA polymerase.

Rifabutin (Mycobutin)

Riboflavine phosphate is a very effective NAD+-recycling agent.