1-Methyl-3-(thioxanthen-9-ylmethyl) piperidine S-oxide 7741-55-1 Methixen-sulfoxid [German] Piperidine, 1-methyl-3-(9H-thioxanthen-9-ylmethyl)-, S-oxide Piperidine, 1-methyl-3-(thioxanthen-9-ylmethyl)-, S-oxide