2-N,2-N,3-N,3-N-tetramethylbuta-1,3-diene-2,3-diamine

3a,6a-dimethyl-1,3,4,6-tetrahydroimidazo[4,5-d]imidazole-2,5-dione

2,6,7-三甲基蝶啶

5-乙酰基二氢-2-羟基-2,5-二甲基呋喃-3(2H)-酮

1,3,6,7-tetramethylpteridine-2,4-dione