Iodinated somatostatins
CA 2012115 C · Owner: Moreau, Sylviane · Inventors: Eck, Charles R.; Moreau, Sylviane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An octapeptide of the formula:, wherein each A1 and A2 independently, is H, C1-12, alkyl, C7-10 phenylalkyl R1CO (where R1 is, C1-20 alkyl, C3-20 alkenyl C3-20 alkynyl, phenyl, naphthyl, or C7-10 phenylalkyl) or R2OCO (where, R2 is C1-10 alkyl or C7-10 phenylalkyl) provided, that when one of A1 or A2 is R1CO or R2OCO the, other must be H; A3 is CH2-A6 (where A6 is pentafluorophenyl, naphthyl, pyridyl, phenyl or o-, m-, or, more preferably, p-substituted phenyl where the, substituent is a halogen, NH2 NO2, OH, or C1-3, alkyl); (I) indicates that tyrosine is iodinated on the phenyl ring at its 3 or 5 carbon positions; A5 is Thr Ser, Phe, Val, .alpha.-aminobutyric acid or Ile, provided, that …
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 March 14, 1990 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.