The present invention relates to polymorphs and solvates of the hydrochloride salt of 4-[2-[[5-methyl-1-(2-naphthalenyl)-1H-pyrazol-3-yl]oxy]ethyl]morpholine (P027), processes for their preparation, and to pharmaceutical compositions comprising them.本發明有關4-[2-[[5-甲基-1-(2-萘基)-1H-吡唑-3-基]氧基]乙基]啉(P027)之鹽酸鹽的多形體及溶劑化物,其製備方法,及包含彼之藥學組成物。