A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 15862-18-7, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15862-18-7, Name is 5,5′-Dibromo-2,2′-bipyridine, molecular formula is C10H6Br2N2. In a Article, authors is Schwab, Peter F.H.，once mentioned of 15862-18-7
Efficient syntheses of 5-brominated and 5,5?-dibrominated 2,2?-bipyridines and 2,2?-bipyrimidines, useful for the preparation of metal-complexing molecular rods, have been developed. 5-Bromo-2,2-bipyridine, 5-bromo-5?-n-butyl-2,2?-bipyridine, and 5-bromo-5?-n-hexyl-2,2?-bipyridine were obtained by Stille coupling of 2,5-dibromopyridine with 2-trimethylstannylpyridine or the requisite 5-alkyl-2-trimethylstannylpyridine, obtained via regioselective zincation of a 3-alkylpyridine. BF3 complex in the less hindered of the two reactive positions with lithium di-tert-butyl-(2,2,6,6-tetramethyl-piperidino)zincate. 5,5?-Dibromo-2,2?-bipyridine was obtained by the reductive symmetric coupling of 2,5-dibromopyridine with hexa-n-butyldistannane. The yields of these coupling reactions ranged from 70 to 90%. 5-Bromo- and 5,5?-dibromo-2,2?-bipyrimidines were obtained in yields of 30 and 15%, respectively, by bromination of 2,2?-bipyrimidine, prepared from 2-chloropyrimidine in 80% yield by an improved reductive symmetric coupling procedure.
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: 15862-18-7
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI