2-Pyrimidineacetic acid, 4-oxo-alpha,alpha,6-trimethylthio- 4-Methyl-6-oxypyrimidin-2-alpha-thioisobutyric acid 4-Metil-6-ossipirimidin-2-alpha-tioisobutirrico [Italian] 4-Oxo-alpha,alpha,6-trimethylthio-2-pyrimidineacetic acid Isotiran UV6309000