111041-94-2 2,3-Dihydro-2-imino-3-phenyl-5H-1,3,4-thiadiazolo(2,3-b)quinazolin-5-one 2-Imino-3-phenyl-2,3-dihydro-5H-1,3,4-thiadiazolo(2,3-b)quinazolin-5-one 5H-1,3,4-Thiadiazolo(2,3-b)quinazolin-5-one, 2,3-dihydro-2-imino-3-phenyl-