meprotixol meprotixol meprotixol is a cough suppressant. it has also been used for the treatment of rheumatic diseases. meprotixolclinical dataatc coder05db22 (who) identifiers iupac name 9-(3-dimethylaminopropyl)-2-methoxy-9h-thioxanthen-9-ol cas number4295-63-0 ypubchem cid71195chemspider64331 yunii2jxz154z0qkeggd07394 ychemical and physical dataformulac19h23no2smolar mass329.46 g·mol−13d model (jsmol)interactive image smiles o(c3cc2c(sc1ccccc1c2(o)cccn(c)c)cc3)c inchi inchi=1s/c19h23no2s/c1-20(2)12-6-11-19(21)15-7-4-5-8-17(15)23-18-10-9-14(22-3)13-16(18)19/h4-5,7-10,13,21h,6,11-12h2,1-3h3 ykey:layvflwavigdlk-uhfffaoysa-n y (verify)