5H-Thiazolo(3,2-a)pyrimidin-5-one, 2,3,6,7-tetrahydro-7-(2-methylpropyl)- 7-(2-Methylpropyl)-2,3,6,7-Tetrahydro-5H-thiazolo(3,2-a)pyrimidin-5-one 7-Isobutyl-5-oxo-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine 81538-82-1