hymeniacidin

7,9-二氢-3,9-二甲基-1H-嘌呤-2,6,8(3H)-三酮

1,3,9-三甲基尿酸

1-氮杂-2-甲氧基-1-环庚烯

1,3,7,9-tetramethyl-8-thioxo-3,7,8,9-tetrahydro-purine-2,6-dione