it was found to be a powerful competitive inhibitor of adenosylmethionine decarboxylase ( ec 4.1.1.50 ) , yet the lack of the methyl group at the glyoxal portion increased the apparent ki value for the enzyme by about 30-fold in comparison with methylglyoxal bis ( guanylhydrazone ) .
C0017992
glyoxal
C0034338
methylglyoxal