VU0134992 (VU 0134992) is a potent, selective blocker of the inward rectifier potassium channel Kir4.1 (KCNJ10) with IC50 of 0.97 uM in whole-cell patch clamp electrophysiology assays; displays 9-fold selectivity for homomeric Kir4.1 over Kir4.1/5.1 concatemeric channels (IC50=9 uM) at -120 mV; VU0134992 is greater than 30-fold selective for Kir4.1 over Kir1.1, Kir2.1, and Kir2.2, is weakly active toward Kir2.3, Kir6.2/SUR1, and Kir7.1, and is equally active toward Kir3.1/3.2, Kir3.1/3.4, and Kir4.2 in Tl+ flux assays; causes dose-dependent diuresis, natriuresis, and kaliuresis in rats after oral treatment; VU0134992 represents the first in vivo-active tool compound for probing the therapeutic potential of Kir4.1 as a novel diuretic target for the treatment of hypertension.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

1. Kharade SV, et al. Mol Pharmacol. 2018 Jun 12. pii: mol.118.112359.