Sialic acid derivatives and method for producing the same
CA 1248095 A · Owner: Rikagaku Kenkyusho · Inventors: Ogawa, Tomoya; Sugimoto, Mamoru; Shitori, Yoshiyasu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sialic acid derivatives of the formula: wherein R1 is hydrogen, trityl, or acyl R2 is hydrogen or, acyl, one of R3 and R4 is alkoxycarbonyl or carboxyl and the other of R3 and R4 is glycerolglycoside or dialkylglycerol. These compounds may be employed as a useful intermediate for the synthesis of biologically active substances and may be employed as an inhibitor of hydrolytic enzyme a reagent, for affinity chromatography for purifying enzyme or a, synthetic antigen.
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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
- Granted January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.