2-(((4-(Acetylamino)phenyl)methylene)hydrazino)-4-oxo-5-thiazolidineacetic acid 2-((p-Acetamidobenzylidene)hydrazino)-4-oxo-5-thiazolidineacetic acid 5-Thiazolidineacetic acid, 2-(((4-(acetylamino)phenyl)methylene)hydrazino)-4-oxo- 64058-90-8