Novel retinol derivatives and uses thereof
CA 2135298 A1 · Owner: Sloan Kettering Institute For Cancer Research · Inventors: Derguini, Fadila; Buck, Jochen; Hammerling, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a purified retinoid compound characterized by a molecular mass of about 320 daltons and an atomic composition of C20H32O3. The present invention also provides a purified retinoid compound having structure (I) wherein the, configuration of the C7, C9 and C11 double bond independently is , Z or E and the absolute configuration at C13 and C14 is independently R or S; wherein R1 is alkyl alkyl halide, alcohol, ester, ether, aldehyde ketone, carboxylic acid, carboxylic ester acyl, halide, amide, nitrile, or amine; R2 and R3 are independently hydroxyl, halide, alkoxy, ester, alkyl alcohol, ether, aldehyde, ketone, carboxylic acid carboxylic ester, nitrile, amine, …
Read the whole patent
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 6, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2015.
- 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.