Hydrazino acids of the general form

[31] 1909, J CHEM SOC, V95, P782

[32] 1908, BER, V41, P2071

[33] 1894, ANN CHEM, V279, P122

[34] 1896, BER, V29, P670

[35] 1909, J CHEM SOC, V95, P785

[36] 1898, ANN CHEM, V303, P75

[37] 1896, ANN CHEM, V290, P1

[38] 1899, BER, V32, P1833

[39] 1908, J CHEM SOC, V93, P820

[40] 1917, J PRAKTISCHE CHEMIE, V96, P298

[31] 1909, J CHEM SOC, V95, P782

[32] 1908, BER, V41, P2071

[33] 1894, ANN CHEM, V279, P122

[34] 1896, BER, V29, P670

[35] 1909, J CHEM SOC, V95, P785

[36] 1898, ANN CHEM, V303, P75

[37] 1896, ANN CHEM, V290, P1

[38] 1899, BER, V32, P1833

[39] 1908, J CHEM SOC, V93, P820

[40] 1917, J PRAKTISCHE CHEMIE, V96, P298