PROCESS EMPLOYING CONTROLLED CRYSTALLIZATION IN FORMING CRYSTALS OF A PHARMACEUTICAL
    18.
    发明公开
    PROCESS EMPLOYING CONTROLLED CRYSTALLIZATION IN FORMING CRYSTALS OF A PHARMACEUTICAL 审中-公开
    与控制结晶晶体中医药的形成过程

    公开(公告)号:EP1758664A2

    公开(公告)日:2007-03-07

    申请号:EP05745530.5

    申请日:2005-05-03

    IPC分类号: B01D9/00

    CPC分类号: C07D213/42 C07D263/32

    摘要: A process is provided which employs reactive controlled crystallization to produce drug substance having desirable crystal properties which process involves providing reactants A and B in liquid or solution form and adding reactant B to reactant A using a cubic or incremental addition technique to control extent of reaction and thus crystallization kinetics, including supersaturation and nucleation, to produce crystals of drug substance which are generally larger, better quality and with few fines and narrow particle size distribution than normally obtainable employing prior art crystallization techniques. In addition, crystals of drug substance produced by the above process is also provided.