In vitro cytotoxic activity of tri-n-butyltin(IV)lupinylsulfide hydrogen fumarate (IST-FS 35) and preliminary antitumor activity in vivo

The cytotoxicity in vitro and antitumor activity in vivo of the organotin compound tri-n-butyltin(IV)lupinylsulfide hydrogen fumarate (IST-FS 35) have been investigated. The IC50 values obtained in a panel of tumor cell lines were compared to those of the parental compound IST-FS 29 in the same cells. IST-FS 35 resulted significantly more active than IST-FS 29 with IC50 values in the range 0.16-1.8 microM. Toxicity studies in vivo, after...