羰基镍

3,4-二氢-2(1H)-吡啶酮

4-甲基-3-吡咯啉-2-酮

6-(4-Methyl-2-oxo-3-pyrrolin-1-yl)-2-piperidone

[4-(4-methylbenzoyl)phenyl]-(4-methylphenyl)methanone