.alpha.-Ketopropionaldehyde 1-Ketopropionaldehyde 2-Ketopropionaldehyde 2-Oxopropanal 78-98-8 Acetylformaldehyde Acetylformyl Glyoxal, methyl Methylglyoxal NSC79019 Propanal, 2-oxo- Propanedione Propanolone Propionaldehyde, 2-keto Propionaldehyde, 2-oxo- Pyroracemic aldehyde Pyruvaldehyde Pyruvic aldehyde WLN: VHV1