view 2,3-pentanedione almond, burnt, burnt butter, butter, butterscotch, diacetyl, estery apple, fruity, grain, malt, oily buttery, pungent, sickly,
view 2,3-butanedione (diacetyl, dimethylglyoxal) butter, butterscotch, chlorine, diacetyl, penetrating, quinonic, sickly,