4,5,6,7-tetradeuterio-2-[[3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl]methylsulfanyl]-1H-benzimidazole; K 1252-d4; H 225/18-d4; 2-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2-pyridinyl]methyl]thio]-1H-benzimidazole-d4; AG 1777-d4; Lansoprazole Sulfide-d4; [2H4]-Lansoprazole sulfide