2-(n-Butyloxycarbonylmethylene)thiazolid-4-one 2-Butoxycarbonylmethylene-4-oxothiazolidone 832-06-4 Acetic acid, (4-oxo-2-thiazolidinylidene)-, butyl ester (9CI) Butyl (4-oxo-2-thiazolidinylidene)acetate ICI 43823 delta(sup 2,alpha)-Thiazolidineacetic acid, 4-oxo-, butyl ester