3-hydroxy-3-methyl-butan-2-one-(2,4-dinitro-phenylhydrazone)

2-甲基-1-丁烯-3-炔

2-甲基-1-丁烯-3-酮

2,4-二硝基苯肼

3-羟基-3-甲基-2-丁酮