Crystalline forms of 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt (sodium salt 5-amino-2,3-dihydrophthalazine-1,4-dione), pharmaceutical preparations containing it and method of production

摘要

Form I or II of 5-amino-2,3-dihydrophthalazine-1,4-dione sodium salt, characterized by crystallographic values ​​recorded by diagrams of X-ray powder: d values: 13.5; 6.9; 5.2; 4.6; 3.9; 3.5; 3.4; 3.3; 3.1; 3,0 and 2-theta values: 6.5; 12.7; 16.9; 19.3; 22.8; 25.8; 26.6; 27.2; 28.7; 30.3 regarding the form I and d values: 12.9; 7.9; 7.1; 6.5; 5.3; 4.0; 3.7; 3.6; 3.3; And 3.2 2-theta values: 6.8; 11.2; 12.5; 13.7; 16.7; 22.4; 24.3; 24.9; 27.2; 27.8 relative to Form II, moreover characterized by a decomposition temperature = 335 ° C ± 10 ° C.