Omeprazole process and compositions thereof

  • US 6,147,103 A
  • Filed: 09/01/1999
  • Issued: 11/14/2000
  • Est. Priority Date: 08/11/1998
  • Status: Expired due to Term
First Claim
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1. A composition comprising 5-methoxy-2-[[4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole (omeprazole) having less than three parts per million of residual aromatic hydrocarbon solvent and less than 20 p.p.m. of residual methanol relative to omeprazole.

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