| Bioactivity | Zonampanel (YM 872) is a selective antagonist of the glutamate receptor subtype, α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptor. |
| Invitro | Zonampanel inhibits the human MRP4-mediated transport of [3H]oestradiol 17-D-glucuronide in a concentration-dependent manner. In contrast, Zonampanel (up to 1000 mM) does not inhibit the human MRP2- or BCRP-mediated transport of [3H]oestradiol 17-D-glucuronide or [3H]methotrexate[1]. Zonampanel inhibits the uptake of typical substrates by Oat1, Oat2, and Oat3 with inhibition constant (Ki) values of 7.02 to 10.4 μM. A time- and saturable concentration-dependent increase in [14C]Zonampanel uptake is observed in these cells [Km values: 13.4 to 53.6 μM][2]. |
| In Vivo | In in vivo experiments, probenecid and cimetidine decrease intrinsic clearance for both the renal secretion and biliary excretion of Zonampanel[2]. |
| Name | Zonampanel |
| CAS | 210245-80-0 |
| Formula | C13H9N5O6 |
| Molar Mass | 331.24 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | 4°C, sealed storage, away from moisture and light *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light) |
| Reference | [1]. Minematsu T, et al. Characterization of renal tubular apical efflux of zonampanel, an alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate receptor antagonist, in humans. Xenobiotica. 2008 Sep;38(9):1191-202. [2]. Minematsu T, et al. Role of organic anion transporters in the pharmacokinetics of zonampanel, an alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate receptor antagonist, in rats. Drug Metab Dispos. 2008 Aug;36(8):1496-504. |