(E)-9-(3-(Dimethylamino)propylidene)thioxanthen-2-ol hydrochloride 31759-21-4 Thioxanthen-2-ol, 9-(3-(dimethylamino)propylidene)-, hydrochloride, (E)- trans-2-Hydroxy-9-(3-dimethylaminopropylidene)thioxanthene hydrochloride trans-2-Hydroxyprothixene hydrochloride