2-(2-hydroxyethyl)cyclopentan-1-one

N-ethenyl-2-(pyrrolidin-1-yl)cyclopent-1-enecarboxamide

1,3,5-tris(ethenyl)-1,3,5-triazinane-2,4,6-trione

2-(2-oxobutyl)cyclopentan-1-one

2-(1-methyl-2-oxopropyl)-1-cyclopentanone