1820-73-1 EINECS 217-337-6 GAH Glutamic acid, 5-hydrazide, L- (8CI) L-Glutamate-gamma-hydrazide L-Glutamic acid gamma-hydrazide L-Glutamic acid, 5-hydrazide (9CI) L-Glutamic acid-gamma-hydrazide L-gamma-Glutamylhydrazide NSC 7786 gamma-Glutamic acid hydrazide