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Expired Canadian patentCanada

Site-specific chiral ruthenium (ii) and cobalt (iii) anti-tumor agents

CA 1339360 C · Owner: Barton, Jacqueline K. · Inventors: Barton, Jacqueline K.

CIPO record

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Abstract From the Canadian patent

This invention concerns a coordination complex of the formula (R)2---M---(Y)2 wherein M comprises a suitable transition metal, e.g. cobalt or ruthenium R comprises, 1,10-phenanthroline or a substituted derivative thereof, Y comprises a labile ligand, e.g. chloride tartrate, malonate or ascorbate ion and R and Y are bonded to M by coordination bonds. A complex of this invention may be used for covalently labeling DNA with a complex of the formula (R)2---M wherein R and M are as previously defined. A complex of this invention which contains cobalt may also be used in a method for nicking DNA by effecting single-stranded scission of at least one phosphodiester bond of the DNA with ultraviolet …

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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 August 26, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 17, 1986
GrantedAugust 26, 1997
Term endedAugust 26, 2014
Patent numberCA 1339360 C
Classification (IPC)C07F15/06 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005200820112014Application filedJan 17, 1986Patent grantedAug 26, 1997Term endedAug 26, 2014

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.