4, 5-Substituted pyridazines. IV. The effect of some substituents at the 4-position on the ultraviolet absorption spectrum of 3, 6-dichloropyridazine.
D011724:Pyridazines; D011743:Pyrimidines / Q000032:analysis*
D011724:Pyridazines; D011743:Pyrimidines
PYRIMIDINES/determination