In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 141-30-0, name is 3,6-Dichloropyridazine, introducing its new discovery. Electric Literature of 141-30-0
The embodiment of the invention provides a alpha 7 smoke alkali acetylcholine receptor ligand compound, it has the following general formula of any one of, wherein (1) X is: R1 for R7 Is halogen; (2) R2 Hydrogen, and R3 Is halogen or amino; or R3 Hydrogen, and R2 Is halogen or amino; (3) R6 Hydrogen, and R4 And R5 Cylinder base: Or R4 Hydrogen, and R5 And R6 Cylinder base: R8 Is halogen; (4) Y is nitrogen or carbon; Z is R9 , R10 Respectively is halogen. The invention offered by the ligand compound is alpha 7 smoke alkali acetylcholine receptor fine ligand compound, of the present invention alpha 7 smoke alkali acetylcholine receptor ligand compound is subjected to radioactive chemical marker, can be used as PET imaging agent. (by machine translation)
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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N1575 – PubChem