2706-75-4 298-12-4 2990-19-4 4-03-00-01489 (Beilstein Handbook Reference) Acetic acid, oxo- BRN 0741891 CCRIS 1455 EINECS 206-058-5 Formic acid, formyl- Formylformic acid GLYOXYLIC ACID Glyoxalic acid HSDB 5559 Kyselina glyoxylova [Czech] NSC 27785 Oxalaldehydic acid Oxoacetic acid Oxoethanoic acid alpha-Ketoacetic acid