If you want to check if one of your extractions contains a certain amount of ketone, you can try to make the bisulphite adduct. https://www.thevespiary.org/rhodium/Rhodium/chemistry/eleusis/bisulfite.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/eleusis/bisulfite.html)
geh in die knie. wackle mit den hueften. klatsch in die haende. und tanz den mussolini.