Patents Assigned to Asta Pharma Akteingesellschaft
  • Process for the preparation of ifosfamide having improved properties
    Patent number: 4882452
    Abstract: Ifosfamide having improved properties is obtained by crystallization from a solvent mixture selected from the group consisting of (a) a mixture of diethyl ether and a C.sub.1 -C.sub.3 alkanol or (b) a mixture of diisopropyl ether and a C.sub.1 -C.sub.3 alkanol under specific controlled conditions.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: November 21, 1989
    Assignee: Asta Pharma Akteingesellschaft
    Inventors: Jurgen Engel, Siegfried Muller, Werner Laubner