2-肼基-5-甲基-3-硝基砒啶

2-羟基-5-甲基-3-硝基吡啶

哌非尼酮

5-methyl-3-azabicyclo[2.2.0]hex-5-en-2-one

9,11-dimethyl-3,7-diaza-tricyclo[4.2.2.22,5]dodeca-9,11-diene-4,8-dione