CRYSTALLINE FORMS OF OCTAHYDRO-3H-SPIRO FURO 3, 4-C QUINOLINE -1, 4 '-PYRAN -9-OL

摘要

The present invention relates to crystalline forms of the compound of formula (I) as shown in the description and its hydrochloride or hydrobromide salts, to a process for the manufacture thereof, and to the use thereof in pharmaceutical compositions.