
%0 Journal Article
%A Atkinson, MR 
%A Eckermann, GaiI 
%T Identification of Cherry and Hageman's "Compound XI" From Maize As Chelidonic Acid
%J Australian Journal of Biological Sciences
%D 1965/04/01
%V 18
%N 2
%P 437-439
%K 
%R https://doi.org/10.1071/BI9650437
%U https://www.publish.csiro.au/paper/BI9650437 
%X During examination of the nucleotide fraction of barley seedlings a compound that resembled an unidentified constituent of maize shoots-"compound XI" (Cherry and Hageman 1960; Cherry et al. 1961)-was found. The materials from barley and from maize have now been identified as chelidonic acid (4-oxopyran-2,6-dicarboxylic acid); this compound is present in a number of species of grasses (Table 1). In tissues and in extracts at pH values above 2 this strong acid exists mainly in an anionic form (cf. Miyamoto and Brochmann-Hanssen 1962) and is referred to below as chelidonate. 
