| abstract |
The invention relates to the provision of two novel Crystalline Forms I and II for 5-amino-2,3-dihydrofthalazin-1,4-diionate sodium. Surprisingly, it has been discovered that Form I and Form II have different effects on the immune system. This advantageous property is useful for specific immune applications. In addition, both forms have advantageous physicochemical properties which are useful in the production, further processing and / or use of formulas I, form II or a mixture of both. |