Alpha-isomer of 2-chloro-9-{8 3{40 -(N{40 -2-hydroxyethylpiperazino-N)-propylidene{9 -thiaxanthene, carboxylic acid esters thereof and acid addition salts of these compounds

摘要

The present invention relates to the novel alpha-isomer of 2-chloro-9-[3'-(N'-2-hydroxyethylpiperazino-N)-propylidene]-thiaxanthene, carboxylic acid esters thereof, the non-toxic acid addition salts of these compounds, methods of preparing and purifying the said compounds, therapeutic compositions thereof and a method of treating psychotic patients therewith.