7-hydroxy-1,3-dimethylpteridine-2,4(1H,3H)-dione

1-N,1-N,4-N,4-N,5-N,5-N-hexamethylnaphthalene-1,4,5-triamine

(3,4-二甲氧基苯基)(3,4,5-三甲氧基苯基)-甲酮

1,2-dichloro-3,4,5,6-tetramethylbenzene

5-硝基-2-甲基硫代吡啶