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.