Molecular Formula | C20H16N2O2S
|
Molar Mass | 348.42 |
Density | 1.34±0.1 g/cm3(Predicted) |
Melting Point | 204 - 207°C |
Boling Point | 566.7±50.0 °C(Predicted) |
Solubility | 10 mM in DMSO |
Appearance | Solid |
Color | Off-White to Pale Brown |
pKa | 2.91±0.10(Predicted) |
Storage Condition | -20°C Freezer, Under inert atmosphere |
In vitro study | Verinurad inhibited the transport activity of human URAT1 in a concentration-dependent manner with an IC50 of 25 nM. Verinurad also inhibited URAT1 related homologs OAT4 and OAT1 with IC50 of 5.9 μm and 4.6 μm, respectively, with 200-fold lower affinity than URAT. Verinurad had a 1640-fold higher affinity for human URAT1 than for rat URAT1 (human URAT1 IC50 = 0.025 μm, rat URAT IC50 = 41 μm). Verinurad is highly potent against human URAT1, and residues 35, 365 and 481 of URAT1 contribute to verinurad binding. A chimeric point mutation was introduced at position 365 of human URAT1 (phenylalanine at position 365 of human origin was replaced with tyrosine at position 365 of rat; h-F365Y), and the IC50 of verinurad was 4 μm, it was 160 times lower than that of wild type human-derived URAT1D. At the same time, if a similar point mutation is introduced into the input URAT1 (that is, tyrosine at position 365 of rats is mutated to phenylalanine at position 365 of human origin; r-Y365F),verinurad has an IC50 of 2.9 μm, than wild-type rat URAT1 14 times higher. |
In vivo study | In the human body, Verinurad single drug is absorbed quickly, and its exposure (Cmax and ACC) increases with the increase of dose. In the starved state, the Cmax is reached 0.5-0.75 hours after administration; In the Fed state, the Cmax is reached 1.25 hours after administration. At different doses, t 1/2 is about 10-15 hours. Verinurad is well tolerated in vivo. In the systemic circulation, verinurad has a high clearance rate (CL/F ranging ~ 30-50 L/h) and is widely distributed extravascularly. Its renal excretion rate is low, only 2%-3% in the urine. Most of the verinurad may form metabolites in the liver by biotransformation. |