Monguzzi, R. published the artcileSynthesis of new α-hydrazinoarylacetic acids and derivatives, Related Products of nitriles-buliding-blocks, the publication is Farmaco, Edizione Scientifica (1976), 31(8), 549-60, database is CAplus and MEDLINE.
α-Hydrazinoarylacetic acids, e.g., PhCH(NMeNH2)CO2H, were prepared by reaction of α-bromoarylacetic acids with N2H4, alkylhydrazines and carbobenzyloxyhydrazines. Na-Hg reduction of α-hydrazono-2-thienylacetic acid and of α-hydrazono-(2,5-dichloro-3-thienyl)acetic acid gave α-hydrazino-2-thienylacetic acid and α-hydrazino-(2-chloro-4-thienyl)acetic acid. PhCHBrCO2H and PhCH2O2CNHNH2 gave PhCH(NHNHCO2CH2Ph)CO2H, which with 2,4-(O2N)2C6H3OH and dicyclohexylcarbodiimide gave 16% I (R = PhCH2O2C) (and smaller amounts of II), which was hydrogenolyzed with Pd/C to 53% I (R = H).
Farmaco, Edizione Scientifica published new progress about 49540-34-3. 49540-34-3 belongs to nitriles-buliding-blocks, auxiliary class Aliphatic Chain, name is Ethylhydrazine dihydrochloride, and the molecular formula is C2H10Cl2N2, Related Products of nitriles-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts