The present invention relates to, especially in crystal form, the 4- (R) -6 with following general formula, 7- dihydro -5H- pyrrolo- [1,2-c] phosphate of the fluoro- benzonitrile of imidazoles -5- base -3- or the particular form and relevant invention embodiment of nitrate and these salt. These salt and salt form can preventative and/or therapeutic treatment Aldosterone synthase gene and/or the aromatase enzyme disease or illness that mediate, such as Cushing disease.本發明涉及，尤其呈結晶形式的，具有以下通式的4-(R)-6,7-二氫-5H-吡咯并[1,2-c]咪唑-5-基-3-氟-苄腈的磷酸鹽或硝酸鹽，和這些鹽的特定形式，以及相關的發明實施方式。這些鹽及鹽形式可以預防性和/或治療性治療醛固酮合成酶和／或芳香酶介導的疾病或病症，例如庫欣病。
