5-hexyl-furan-2-carboxylic acid

5-hexyl-2-oxo-2,3-dihydro-furan-3,4-dicarboxylic acid diethyl ester

β-(1-chlorovinyl)-β-propiolactone

2-dimethylamino-octanenitrile

ethyl 4-cyano-4-(dimethylamino)decanoate