The present invention primarily relates to molecular crystalline substances, preferably salts of Dasatinib in crystalline form, comprising a compound of formula 1, preferably a cation of a compound of formula 1, and a second compound selected from the group consisting of glutaric acid, nicotinic acid and saccharin, preferably an anion thereof. The Invention is further related to pharmaceutical compositions comprising such a substance. Furthermore, the Invention relates to processes for preparing said substances. The invention also relates to several aspects of using said substances or pharmaceutical compositions to treat a disease.