[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][#Branch1][C][#N][Br]"}, {"from": "gpt", "value": "The molecule is an inorganic compound used as a reagent in molecular biology.  As a reagent for peptide mapping and amino acid sequence analysis, cyanogen bromide hydrolyzes peptide bonds at methionine residues in peptides and proteins.  In addition, this agent acts as a coupling reagent for phosphoramidate or pyrophosphate inter-nucleotide bonds in DNA duplexes. (NCI)"}]