1,3-Propanedial 1,3-Propanedialdehyde 1,3-Propanedione 4-01-00-03634 (Beilstein Handbook Reference) 542-78-9 BRN 1209262 CCRIS 5168 HSDB 4353 MALONALDEHYDE Malondialdehyde Malonic aldehyde Malonic dialdehyde Malonodialdehyde Malonyldialdehyde NCI-C54842 Propanedial