Crystalline forms for 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt, pharmaceutical preparations containing the same and method for the production of said forms

摘要

The invention relates to the provision of two novel crystalline forms I and II for 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt. Surprisingly it was discovered that form I and form II have differing immunological effects. This advantageous property is useful for immune-specific applications. In addition, both forms have advantageous physicochemical properties which are useful in the production, further processing and/or use of a pharmaceutical preparation of form I, form II or a mixture of both.