A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 49669-22-9, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 49669-22-9, Name is 6,6′-Dibromo-2,2′-bipyridine, molecular formula is C10H6Br2N2. In a Article, authors is Justaud, Frederic，once mentioned of 49669-22-9
Synthetic approaches to 6,6?-disubstituted-2,2?-bipyridine ligands bearing two redox active (eta2-dppe)(eta5- C5Me5)Fe-CC- moieties are described. The target complex 6,6?-{(eta2-dppe)(eta5-C5Me 5)Fe-CC}2(2,2?-bipyridine) (6) was obtained in 79% yield as an orange powder from the reaction between the iron chloride (eta2-dppe)(eta5-C5Me5)Fe-Cl (9) and the 6,6?-bis(trimethylsilylethynyl)-2,2?-bipyridine (14) in the presence of KF and KPF6 in a 3:1 methanol/THF mixture. When reacted with 2 equiv. of [(C5H5)2Fe][PF6], 6 provided the stable bis-iron(iii) complex 6[PF6]2 in 89% yield which was characterized by an X-ray crystal structure. The substitution pattern of the novel metallo-ligand 6 is so spatially demanding that it does not react with CuCl, [Cu(CH3CN)4][PF6] and PtCl2, even in drastic conditions. Nevertheless, compound 6 reacts smoothly with ZnCl2 to provide the zinc adduct ZnCl2(6), the spectroscopic properties of which evidence the Lewis acidic character of zinc dichloride.
Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about is helpful to your research. SDS of cas: 49669-22-9
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI