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???(??):: 4-Acetyloxy Omeprazole ;Esomeprazole Impurity 158;2-[[(5-Methoxy-1H-benziMidazol-2-yl)sulfinyl]Methyl]-4-acetyl-3,5-diMethyl-4-pyridinol;2-[[(6-Methoxy-1H-benziMidazol-2-yl)sulfinyl]Methyl]-3,5-diMethyl-4-pyridinol 4-Acetate;4-Pyridinol, 2-[[(6-Methoxy-1H- benziMidazol-2-yl)sulfinyl] Methyl]-3,5-diMethyl-, 4-acetate-

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Brownish Yellow Solid

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An intermediate in the preparation of Omeprazole metabolites.

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