Crystal modification B 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

摘要

8-Cyano-1-cyclopropyl-7-(1S,6S-2,8-diazabicyclo[4.3.0]nonan-8-yl)-6-fl uoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid (CCDC) of the crystal modification B, characterized in that it has an X-ray powder diffractogram with the following reflection signals (2 theta) of high and medium intensity: 8.91, 13.23, 14.26, 14.40, 15.34, 17.88, 19.70, 20.78, 21.86, 28.13 and 30.20.