CRYSTALLISATION OF SOLID FORMS OF CLOPIDOGREL ADDITION SALTS

摘要

The invention relates to a process for the preparation of form 1 and form 2 of clopidogrel hydrogen sulfate, a process for the preparation of amorphous clopidogrel hydrogen sulfate, the 2-propylsulfate of clopidogrel, the perchlorate of clopidogrel and methods for the preparation of these compounds.