MSU-42011 is an orally active retinoid X receptor-like (RXR) agonist. It potently inhibits the expression of iNOS, low SREBP-induced and activated RXR, and p-ERK at the protein level. MSU-42011 has demonstrated antitumor activity in a [kras]-driven mouse model of lung cancer and is effective for the treatment of preclinical [kras]-driven lung cancer with immunomodulatory activity.

GP 1a is a potent agonist of cannabinoid receptor 2 (CB2) (EC50=7.1), as shown in cAMP, GTPγS and β-arrestin recruitment assays. GP 1a is approximately 30-fold more selective for CB2 receptors than CB1 receptors and increases P-ERK1/2 expression in HL-60 cells in vitro. GP 1a is beneficial for skin wound healing. GP 1a inhibits inflammation and fibrogenesis while promoting epithelial re-formation.

ATPγS tetralithium salt is a good substrate for RNA-stimulated nucleotide hydrolysis and RNA unwinding activity of eIF4A.

BTdCPU is a potent activator of heme-regulated eIF2α kinase (HRI) . BTdCPU promotes eIF2α phosphorylation and induced apoptosis in resistant cell.

ISRIB (trans-isomer) is a potent inhibitor of PERK (IC50=5 nM) that restores protein translation and prevents SG formation in the presence of P-eIF2α.

GCN2-IN-6 is also a eIF2α kinase PERK inhibitor with an IC50 of 0.26 nM (in enzymatic assay) and 230 nM (in cells). GCN2-IN-6  is a potent, and orally available GCN2 inhibitor confirmed by in-house enzymatic (IC50 of 1.8 nM) and cellular assays (IC50 of 9

Salubrinal, a phosphatases (PP1) inhibitor(IC50=1.7 μM), exhibits function on the eukaryotic translation initiation factor 2 subunit (eIF2α).

GSK2606414 is a cell-permeable and orally active protein kinase R-like endoplasmic reticulum kinase（PERK）inhibitor with IC50 of 0.4 nM. GSK2606414 inhibits PERK activation in cells and suppresses the growth of human tumor xenografts in mice.