elaxation

RHC 80267 (U-57908) is a selective inhibitor of DAGL, with an IC50 of 4 μM in canine platelets.

Medetomidine hydrochloride (MPV785) is a selective α2-adrenoceptor agonist, with Ki of 1.08 nM, exhibts 1620-fold selectivity over α1-adrenoceptor.

L-Nabe (H-Arg(NO2)-Obzl) is a effective irreversible endothelium dependent relaxation inhibitor.

ARN-21934 is a potent, highly selective, blood-brain barrier (BBB) penetrant inhibitor for human topoisomerase II α over β. It inhibits DNA relaxation with an IC50 of 2 μM, compared to 120 μM for Etoposide. ARN-21934 exhibits favorable in vivo pharmacokinetic properties and shows promise in anticancer research, displaying affinity for topoIIα with an IC50 of 2 μM and for topoIIβ with an IC50 of 120 μM. It demonstrates activity against human cancer cell lines including melanoma (A375: 12.6 μM, G-361: 8.1 μM), breast (MCF7: 15.8 μM), endometrial (HeLa: 38.2 μM), lung (A549: 17.1 μM), and prostate (DU145: 11.5 μM) cancer cells. Following a single intraperitoneal injection of 10 mg/kg, ARN-21934 achieves a peak plasma concentration of 0.68 μg/mL in 15 minutes, with a half-life of 149 minutes, and remains detectable in plasma and the brain for up to 360 minutes. [1] Jose Antonio Ortega, et al. Novel, Potent, and Druglike Tetrahydroquinazoline Inhibitor That Is Highly Selective for Human Topoisomerase II α over β. J Med Chem. 2020 Nov 12;63(21):12873-12886.

Gepotidacin mesylate dihydrate (GSK2140944 mesylate dihydrate) is an orally available triazaacenaphthylene antibiotic with antibacterial activity. Gepotidacin mesylate dihydrate is an inhibitor of bacterial type II topoisomerase. Gepotidacin mesylate dihydrate inhibits bacterial DNA replication by blocking topoisomerase and can be used to study bacterial infection.