7-Methylthiomethylpaclitaxel
BMS-184476 is a 7-methylthiomethyl ether derivative of paclitaxel with antineoplastic activity.  BMS-184476 binds to and stabilizes the resulting microtubules, thereby inhibiting microtubule disassembly which results in cell- cycle arrest at the G2/M phase and apoptosis. (NCI)