Solid forms of the magnesium salt of S-omeprazole and...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Reexamination Certificate

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07902370

ABSTRACT:
New solid forms of the active ingredient magnesium salt of S-omeprazole, obtainable by a preparation process including: a) crystallizing a magnesium salt of S-omeprazole from a solution of a magnesium salt of S-omeprazole in a solvent system that includes a mixture of methanol/water with an amount of water equal to or greater than about 0.01 ml/g of the magnesium salt of S-omeprazole starting material; b) isolating the magnesium salt of S-omeprazole that appears in the prior operation; c) separating the free organic solvent from the magnesium salt of S-omeprazole obtained or, alternatively, separating both the free solvent and the solvation solvent. The new solid forms are obtained by a reproducible and robust process, with high yield and elevated optical purity, which is useful for the preparation of pharmaceutical products that contain said active ingredient.

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Cui, Ming-quan, et al., Research on the Synthesis of S-omeprozole Magnesium, Chinese Journal of Synthetic Chemistry, 2002, pp. 193-194, vol. 10, China Academic Journal Electronic Publishing House. Translation.

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