WHILE attempting to isolate and identify pyridme nucleotide-dependent and enzymatically-formed aldehydes and α-keto acids as their 2,4-dinitrophenylhydrazone derivatives, it was noted that ...

DETERMINATIONS of α-ketoglutaric acid and pyruvic acid in blood, cerebrospinal fluid and urine have been carried out using 2,4-dinitrophenylhydrazone method.1 The keto-acid hydrazones were ...