KnowraPropionaldehydeLinked fromLinked fromThe 2 pages that link to Propionaldehyde, each with the reason it gives.All 2Compared with 21-PropanolCompared with: Propanal is the aldehyde formed by controlled oxidation of 1-propanol.ButyraldehydeCompared with: It has one fewer carbon than butyraldehyde and differs in molecular formula.