Synonyms: BRN 1128549;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-;AC1L5AN3;LS-150350;2-ethylsulfonyl-7-methyl-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one;63028-49-9