Determination of the azo-hydrazono tautomerism of some 2-pyrazolin-5-one dyes by means of nuclear magnetic resonance spectroscopy and 15N-labeled compounds

1969 ◽  
Vol 34 (6) ◽  
pp. 1685-1686 ◽  
Author(s):  
Gregory J. Lestina ◽  
Thomas H. Regan
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