申请人:SYNTHON BV
公开号:WO2009141167A1
公开(公告)日:2009-11-26
The invention relates to stable acid addition salts of bosentan useful for the purification of bosentan base; the salts are in solid state and the starting acid has a pKa lower than 3, a process of making the salts and use in medicine, and a process for prurifying bosentan base.