7-amino-6-cyano-1,3-dimethyl-5-methylthiopyrido(2,3-d)pyrimidine-2,4(1H,3H)-dione

(三苯基膦)乙腈

4-amino-1,3-dimethyl-2,6-dioxopyrimidine-5-carbothialdehyde

methyl 6-amino-1,3-dimethyluracil-5-dithiocarboxylate

6-氨基-1,3-二甲基-2,4-二氧代-1,2,3,4-四氢嘧啶-5-甲醛