Patents Assigned to Pifzer, Inc.
  • Process for antiparasitic agent
    Patent number: 6906184
    Abstract: An improved process for the preparation of the antiparasitic compound 25-cyclohexyl-22,23-dihydro-5-hydroxyiminoavermectin B1 monosaccharide from doramectine and intermediates therefor and crystalline solvates thereof.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: June 14, 2005
    Assignee: Pifzer, Inc.
    Inventors: Nigel D. Walshe, Selena J. Cambers