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1. J. Med. Chem., 1975, 18 (7), pp 741–746
Synthesis and antihypertensive properties of new 3-hydrazinopyridazine derivatives
Giorgio Pifferi, Francesco Parravicini, Carlo Carpi, Luciano Dorigotti
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http://dx.doi.org/10.1021/jm00241a020Synthesis and antihypertensive activity of new 6-heteroaryl-3-hydrazinopyridazine derivatives
Gerd Steiner, Josef Gries, Dieter Lenke
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http://dx.doi.org/10.1021/jm00133a013