The acetone-dried powder of Ehrlich's ascites carcinoma was able to hydrolyze dichloroacetyl-DL-aspartic acid but not the dichloroacetyl derivatives of the following 17 amino acids: Glycine, DL-alanine, DL-α-aminobutyric acid, DL-valine, DL-leucine, DL-phenylalanine, DL-tyrosine, DL-serine, DL-threonine, DL-glutamic acid, ε-benzoyl-DL-lysine, DL-methionine, erythro-β-phenyl-DL-serine, threo-β-phenyl-DL-serine, erythro-β-p-nitrophenyl-DL-serine, threo-β-p-nitrophenyl-DL-serine, and DL-phenylglycine.
