73909-20-3 Benzoic acid, 2-[(tetrahydro-4,6-dioxo-2-thioxo-5(2H)-pyrimidinylidene)methyl]- NSC90754 o-Toluic acid, .alpha.-(tetrahydro-4,6-dioxo-2-thioxo-5(2H)pyrimidinylidene)-