Kristallmodifikation D von 8-Cyan-1-cyclopropyl-7-(1S,6S-2,8-diazabicylo[4.3.0)nonan-8-yl)-6-fluor-1,4-dihydro-4-oxo-3-chino incarbonsäure

摘要

The invention relates to a defined crystal modification of 8-cyano -1-cyclopropyl -7- (1S, 6S- 2,8- diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro -1,4- dihydro -4-oxo-3- quinoline carboxylic acid, to methods for producing the same and to the use thereof in pharmaceutical formulations. The crystal modification can be distinguished from other crystal modifications of 8-cyano -1-cyclopropyl -7-(1S, 6S-2,8- diazabicyclo [4.3.0] nonan-8-yl) -6-fluoro -1,4-dihydro -4-oxo -3-quinoline carboxylic acid of formula (I) by its characteristic X-ray powder diffractogram and its differential thermodiagram.