Patents Assigned to pHarma-medica a-s
  • Process for the isolation and purification of podophyllotoxin
    Patent number: 4680399
    Abstract: A process for obtaining purified podophyllotoxin from an impure podophyllotoxin containing starting material comprising forming a solution of the starting material, forming a solid complex of podophyllotoxin and an aromatic or heteroaromatic compound other than benzene, and separating the solid complex from the solution.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: July 14, 1987
    Assignee: pHarma-medica a-s
    Inventor: Ole Buchardt