2-Ethylsulfonyl-7-methyl-5H-1,3,4-thiadiazolo(3,2-a)pyrimidin-5-one 5H-1,3,4-Thiadiazolo(3,2-a)pyrimidin-5-one, 2-(ethylsulfonyl)-7-methyl- 63028-49-9 BRN 1128549