Rhosin (G04) is a potent, specific RhoA subfamily Rho GTPases inhibitor that specifically binds to RhoA to inhibit GEF reaction of RhoA with Kd of 0.4 uM, does not interact with Cdc42 or Rac1, nor the LARG.

Rho-kinase (ROCK) inhibitor

RH01386 is a small molecule that protect pancreatic β cells against endoplasmic reticulum stress-induced cell death.

RG7800 a small molecule SMN2 splicing modifier to enter human clinical trials to treat spinal muscular atrophy.

Revexepride (SSP 002358.

Revaprazan (SB-641257.

Revaprazan (SB-641257.

Rev1-IN-5 is a small molecule inhibitor of the C-terminal domain of Rev1 and the Rev1-interacting region protein-protein interaction (Rev1-CT/RIR PPI) with IC50 of 2.5 uM.

Retro 2 is the first small molecule inhibitor of plant toxin ricin, protects HeLa cells against Ricin, Stx1 and Stx2, selectively blocks retrograde toxin trafficking at the early endosome-TGN (trans-Golgi network) interface.

Retro 1 is the first small molecule inhibitor of plant toxin ricin, protects HeLa cells against Ricin, Stx1 and Stx2, selectively blocks retrograde toxin trafficking at the early endosome-TGN (trans-Golgi network) interface.

RETRA is a small molecule mutant p53 reactivator that activates a set of p53-regulated genes and specifically suppresses mutant p53-bearing tumor cells in vitro and in mouse xenograft.

RETRA hydrochloride is a small molecule mutant p53 reactivator that activates a set of p53-regulated genes and specifically suppresses mutant p53-bearing tumor cells in vitro and in mouse xenograft.

RETRA hydrobromide is a small molecule mutant p53 reactivator that activates a set of p53-regulated genes and specifically suppresses mutant p53-bearing tumor cells in vitro and in mouse xenograft.

Retinyl palmitate is an ester of Retinol and is the major form of vitamin A found in the epidermis. Retinyl palmitate has been widely used in pharmaceutical and cosmetic formulations.

RET-IN-23c is a potent and selective RET kinase inhibitor with IC50 of 61.2 nM, shows no significant inhibitory effect against VEGFR-2 and KDR.

Retapamulin is a topical antibiotic, which binds to both E. coli and S. aureus ribosomes with similar potencies with Kd of 3 nM.

RET agonist BT13 is a novel small molecule GDNF receptor RET agonist, potently and selectively activates RET and its downstream intracellular signaling cascades in immortalized cells (EC50~20 uM).

Resminostat(RAS2410; 4SC-201) is a potent inhibitor of HDAC1/3/6(IC50=43-72 nM); less potent to HDAC8 with IC50 of 877 nM.

Repinotan is a high-affinity, selective, full agonist of the 5HT1A-receptor subtype with neuroprotective properties.

Remodelin Fluor is a small molecule analog of Remodelin, demonstrates in vivo activitiy against NAT10, significantly enhances the healthspan in a Lmna G609G HGPS mouse model..

Relacatib (SB-462795, GSK-462795) is a potent and orally bioavailable small molecule cathepsin inhibitor with Ki of 41, 68 and 53 pM for cathepsin K, L and V, respectively.

REDX-05358 is a novel potent, highly selective, orally bioavailable pan RAF inhibitor with IC50 of 0.1, 0.68, 0.171, and 0.076 nM for ARAF, BRAF, BRAF (V600E), and CRAF, respectively.

RCM-1 (FOXM1 inhibitor RCM-1) is a nontoxic, small molecule that inhibits FOXM1 activity in vitro and in vivo, inhibits GFP-FOXM1 in U2OS cells with EC50 of 0.72 uM.

RBPI-4 is a selective small molecule inhibitor of poly(ADP-ribose) glycohydrolase (PARG) with IC50 of 3.0 uM, effectively inhibit PARG in cellular lysate..

RB394 is an orally bioavailable and dual modulator of soluble epoxide hydrolase (sEH) and PPARγ.

RB-101 is an mixed enkephalinase inhibitor that inhibits Aminopeptidase N and Neutral Endopeptidase with IC50 of 11 nM and 2 nM, respectively.

RB-005 (RB-005) is a potent, selective inhibitor of sphingosine kinase SphK1 (SK1) with IC50 of 3.6 uM, displays 15-fold selectivity over SphK2..

Razuprotafib sodium is a potent protein tyrosine phosphatase β(HPTPβ) inhibitor..

Ramelteon is a novel melatonin receptor agonist for human MT1 and MT2 receptors and chick forebrain melatonin receptors with Ki of 14 pM, 112 pM and 23.1 pM, respectively.

Ramatroban (BAY u3405) is a thromboxane A(2) (TxA(2)) antagonist marketed for allergic rhinitis.