39567-23-2 5H-Thiazolo(3,2-a)pyrimidin-5-one, 2,3,6,7-tetrahydro-7-ethyl- 7-Ethyl-2,3,6,7-Tetrahydro-5H-thiazolo(3,2-a)pyrimidin-5-one 7-Ethyl-5-oxo-2,3,6,7-tetrahydro-5H-thiazolo(3,2-a)pyrimidine