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Hyaluronic acid sodium salt, m.w. 1.0 1.5 MDa 484 11 7 and coupling with aryl iodides N1092180 100 and coupling with aryl iodides in the presence of a copper catalyst to form aryl boronates The whole structure is insulated with a 40 mm thick layer of ceramic fibre which ensures that the temperature outside the apparatus remains at room temperature
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