Patents Examined by Thomas Mcenzie
  • Process for the preparation of guanine
    Patent number: 6242599
    Abstract: A process for the preparation of guanine, by reacting 2,4-diamino-5-formylamino-6-hydroxypyrimidine (DAFHP) with formic acid, in the absence of formalize. The process may be conducted with the addition of water and at reflux temperature.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: June 5, 2001
    Assignee: Degussa-Huels Aktiengesellschaft
    Inventors: Christoph Theis, Stephan Bruhn