OMEPRAZOLE

                    2-chloromethyl-3,5-dimethyl-4-methoxy pyridine hcl

                    3,5-dimethyl-4-methoxy pyridine-2-chloro methyl hcl

ONDANSETRONE

                    1,2,3,9-trtrahydro-9-methyl-4h-carbazol-4-one

                    3-[(dimethylamino)methyl]-1,2,3,9-tetrahydro-9-methyl-4h-carbazole-4-one

OXYBUTYNIN

            cyclohexylmandelic acid methyl ester