Optically pure salts of pyridinylmethyl sulfinyl-1h-benzimidazole compounds and intermediates in the preparation therefor
CA 2337581 A1 · Owner: Von Unge, Sverker · Inventors: Von Unge, Sverker; Lindberg, Per Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The novel optically pure compounds Na+ Mg2+, Li+, K+, Ca2+ and N+(R)4 salts of (+)-5-methoxy-2-(4-methoxy-3,5dimethyl-2-pyridinyl)methylsulfinyl-1H-benzimidazole where R, is an alkyl with 1-4 carbon atoms processes for the, preparation thereof and pharmaceutical preparations containing the compounds as active ingredients, as well as the use of the compounds in pharmaceutical preparations and intermediates obtained by preparing the compounds. The novel compounds are represented by:, Ia (+)-enantiomer, wherein n is 1 or 2 and X is Na+ Mg2+, Li+, K+, Ca2+ or, N+(R)4.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 27, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2016.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.