The present invention includes a solid lyophilized form of 2-(4-Methyl-[1,4]diazepan-1-yl)-5-oxo-5H-7-thia-1,11b-diaza-benzo[c]fluorene-6-carboxylic acid (5-methyl-pyrazin-2-ylmethyl)-amide (Compound I) and the process of producing the solid lyophilized form. Furthermore, the present invention provides compositions comprising Compound I, or a pharmaceutically acceptable salt and/or solvate thereof and therapeutic use of the composition.