2-Thiazoline-5-acetic acid, 2-amino-4-oxo- 33176-41-9 5-Thiazoleacetic acid, 2-amino-4,5-dihydro-4-oxo- Acetic acid, (2-imino-4-oxo-5-thiazolidinyl)- Acetic acid, (5-pseudothiohydantoinyl)- NSC43634