甲亚胺酸

5-acetylamino-6-amino-1-methyl-1H-pyrimidine-2,4-dione

(1-methyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl)-amidosulfuric acid

3-乙酰氧基黄嘌呤