New crystal modification of cdch a process for its preparation and pharmaceutical formulations comprising this modification

摘要

1-Cyclopropyl-7-((S,S)-2,8-diazabicycloÄ4,3,0Ünon-8-yl)-6-fluoro-1,4-d ihydro-8-methoxy-4-oxo-3-quinolinecarboxylic acid hydrochloride (CDCH) monohydrate of formula (I) Äin a prismatic crystalline formÜ having a characteristic <13>C NMR peak at 168.1 ppm and an X-ray diffraction band at 2Theta = 26.7 is new.