Pyridazine is a heterocyclic organic compound with the formula C4H4N2. It contains a six-membered ring with two adjacent nitrogen atoms and is aromatic. Pyridazine derivatives have been synthesized and tested for various pharmacological activities, including anti-inflammatory, diuretic, antiasthmatic, antimicrobial, and anticancer effects. Specifically, 3,6-dichloro-pyridazine and N,N-(diphenylamino)-pyridazine have been studied for their activities. Pyridazine derivatives show potential as biologically active molecules and may help in developing new drugs to treat various conditions.