5-[1-Methyl-2-(3-methyl-2-thiazolidinylidene)ethyldene]-4-oxo-2-thioxo-3-thiazolidineacetic acid, ene]-4-oxo-2-thioxo, (5-(1-Methyl-2-(3-methyl-thiazolidin-2-ylidene)-ethylidene)-4-oxo-2-thioxothiazolidine-3-yl)aceticacid, 5-[1-Methyl-2-(3-methylthiazolidin-2-ylidene)ethylidene]-4-oxo-2-thioxo-3-thiazolidineacetic acid, {5-[1-methyl-2-(3-methyl-thiazolidin-2-yliden)-ethyliden]-4-oxo-2-thioxo-thiazolidin-3-yl}-acetic acid, [5-[1-METHYL-2-(3-METHYL-THIAZOLIDIN-2-YLIDENE)-ETHYLIDENE]-4-OXO-2-THIOXO-THIAZOLIDIN-3-YL]-ACETIC ACID, 5-[1-methyl-2-(3-methylthiazolidin-2-ylidene)ethylidene]-4-oxo-2-thioxothiazolidin-3-acetic acid, {5-[1-Methyl-2-(3-methyl-thiazolidin-2-yliden)-aethyliden]-4-oxo-2-thioxo-thiazolidin-3-yl}-essigsaeure, 3-thiazolidineaceticacid,5-[1-methyl-2-(3-methyl-2-thiazolidinylidene)ethylid