116805-48-2 5H-1,3,4-Thiadiazolo(2,3-b)quinazolin-5-one, 6,7,8,9-tetrahydro-2-methyl- 6,7,8,9-Tetrahydro-2-methyl-5H-1,3,4-thiadiazolo(2,3-b)quinazolin-5-one BRN 5025317