AU-461 is an orally active and reversible inhibitor of the gastric H⁺/K⁺ ATPase with IC₅₀ values for rabbit-derived and pig-derived enzymes are 12.15 μM and 4.20 μM respectively. AU-461 competes with activated cationic K⁺ (Kᵢ = 1.64 μM). AU-461 reduces both histamine-stimulated gastric acid secretion and basal gastric acid secretion in rats. AU-461 inhibits ulcer formation caused by ethanol or sodium hydroxide, and restores the plasma gastrin level to normal. AU-461 can be used for the study of peptic ulcers.

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.