| Description | Ralinepag (APD811) is a potent, orally bioavailable agonist of non-prostanoid prostacyclin (IP) receptor, with EC50s of 8.5 nM, 530 nM and 850 nM for human and rat IP receptor and human DP1 receptor, respectively. |
| In vitro | Ralinepag (5c) has potent receptor binding affinity at prostaglandin receptor, with Kis of 1.2 nM, 3 nM, 76 nM, and 256 nM for monkey, human, rat, and dog IP receptor (ligand, [3H]-iloprost), and 2.6 μM, 9.6 μM, 610 nM, 143 nM, and 678 nM for human DP1, EP1, EP2, EP3v6 and EP4 receptors (ligand, [3H]-PGE2), respectively. Moreover, Ralinepag shows no effect on cytochrome P450 enzymes (IC50 > 50 μM for CYPs 1A2, 2D6, 3A4 2C8, 2C9, and 2C19) or hERG channel functional activity in a patch clamp assay (IC50 > 30 μM). Ralinepag also inhibits the ADP-induced human platelet aggregation, with an IC50 of 38 nM[1]. |
| In vivo | Ralinepag (30 mg/kg, p.o.) 显著降低了大鼠单克隆素（MCT）诱导的肺动脉压力增加和肺血管壁厚度[1]。 |
| Target activity | IP (human):8.5 nM(EC50), IP (rat):530 nM(EC50), DP1 (human):850 nM(EC50) |
| Synonyms | APD811 |
| molecular weight | 431.91 |
| Molecular formula | C23H26ClNO5 |
| CAS | 1187856-49-0 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | DMSO: 55 mg/mL (127.34 mM) |
| References | 1. Tran TA, et al. Discovery of 2-(((1r,4r)-4-(((4-Chlorophenyl)(phenyl)carbamoyl)oxy)methyl)cyclohexyl)methoxy)acetate (Ralinepag): An Orally Active Prostacyclin Receptor Agonist for the Treatment of Pulmonary Arterial Hypertension. J Med Chem. 2017 Feb 9;60(3):913-927 |