2-巯基-6-羟基嘌呤

1,2,3,5-四氢-7-甲基-2-硫代蝶啶-4,6-二酮

N-(6-amino-4-oxo-2-sulfanylidene-1H-pyrimidin-5-yl)benzenesulfonamide

N-(6-amino-4-oxo-2-sulfanylidene-1H-pyrimidin-5-yl)-2-nitrobenzenesulfonamide

N-(6-amino-4-oxo-2-sulfanylidene-1H-pyrimidin-5-yl)-4-nitrobenzenesulfonamide