ethyl 3-(oxiran-2-yl)propanoate

N,N-diethylpent-4-enamide

2-methyl-4,4a,5,6-tetrahydro-3H-pyrrolo[1,2-b]pyridazin-7-one

pent-4-enehydrazide

tert-butyl 3-oxohept-6-enoate