troglitazone [ 5-(4-((6-hydroxy-2,5,7,8-tetramethylchroman-2-yl-methoxy)benzyl)-2,4-thiazolidinedione),CS 045,CS-045,Parke Davis brand of troglitazone,Prelay,Rezulin,Warner-Lambert brand of troglitazone ] induces solid tumor differentiation; structure given in first source; withdrawn from the market by manufacturer; PPAR agonist used for type II diabetes