2,4-Thiazolidinedione,5-[(4-fluorophenyl)methylene]-, (5Z)- , with CAS number of 291536-35-1, can be called 5-(4-Fluoro-benzylidene)-thiazolidine-2,4-dione ; (5Z)-5-(4-fluorobenzylidene)-1,3-thiazolidine-2,4-dione .