Neocarzinostatin complexes, a method for producing the same, and an antitumor agent containing said complexes as an active component
CA 1214458 A · Owner: Kayaku Antibiotics Research Co. Ltd. · Inventors: Ueda, Minoru; Yoshitake, Toshihiko; Maeda, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel neocarzinostatin complexes represented by the following formula (I):, (SMA)n - (NCS) ........ (I) wherein n is an integer of 1-35, NCS represents neocarzinostatin residue, SMA represents a residue of a half esterified styrene-maleic acid copolymer having an average molecular weight of 1,000-10,000 in which the maleic acid portion consists of the following units. (1) maleic acid residue bound to NCS (2) maleic acid residue which is free or bound to NCS by non-covalent bonding, provided that the total amount of the above described maleic acid residues (1) and (2) is from an average content of 0.1 per molecule to 60 mol % of SMA and, (3) half-esterified maleic acid residue wherein R is a …
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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 November 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.