4,4,7-trimethyl-5-methylene-oct-6-en-2-one

4-chloro-2,2-dimethylpent-4-enoic acid

2-hydroxy-2,4,4-trimethyl-cyclobutanone

2,3,3,5-tetramethyl-2-(2-methylprop-1-enyl)furan

percarbonate de O,O-tert-butyle et O-isopropyle