24146-48-3 4-Dimethylamino-2-(4-oxo-2-thiazolidinylidene)butyric acid ethyl ester BRN 1079282 Butyric acid, 4-dimethylamino-2-(4-oxo-2-thiazolidinylidene)-, ethyl ester delta(sup 2,alpha)-Thiazolidineacetic acid, alpha-dimethylaminoethyl-4-oxo-, ethyl ester