Chemical Name: (1R)-Laudanosine ; (R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline
Synonym: Esomeprazole EP Impurity B ; Omeprazole EP Impurity B ; 4-Desmethoxy Omeprazole ; 5-Methoxy-2-[[(3,5-dimethylpyridin-2-yl)methyl]sulfinyl]-1H-benzimidazole ; 2-[(RS)-[(3,5-dimethylpyridin-2-yl)methyl]sulphinyl]-5-methoxy-1H-benzimidazole ;