Patent ID: 6066647
Filing Date: 2000-05-23
Classification: A61K,C07D

Abstract:
A trovafloxacin zwitterionic crystal form having the formula ##STR7## which is a non hygroscopic first polymorph PI exhibiting the characteristic X-ray powder diffraction pattern Peak no. 1 2 3 4 5 6 7 8  2.sub.-- .theta..sub.-- (.degree.) Cu 6.9 9.8 11.3 12.0 13.9 16.1 16.6 17.1 d space 12.7 9.0 7.9 7.4 6.4 5.5 5.4 5.2  Peak no. 9 10 11 12 13 14 15  2.sub.-- .theta..sub.-- (.degree.) Cu 17.4 19.7 20.3 21.2 22.8 23.8 26.3 d space 5.1 4.5 4.4 4.2 3.9 3.7 3.4.