1- acetyl - 4- (4-hydroxy phenyl) piperazine, cis-tosylate, cis bromo benzoate, 2-mercapto-5-methoxy benzimidazole, omeprazole phide compound, 4-bromo butyronitrile, lansoprazole sulphide compound, 2-chloromethyl-3-methyl-4-(2, 2, 2-trifluoroethoxy)pyridine