疫情复工霍夫曼降解 广告营销成功案例1. 3-Aminopicolinic Acid and its Derivatives. Aqueous sodium hypobromite (from bromine, 56 g., and ice-cold 15% sodium hydroxide solution, 350 ml.) was added to a solution of quinoli
霍夫曼降解 1. 3-Aminopicolinic Acid and its Derivatives. Aqueous sodium hypobromite (from bromine, 56 g., and ice-cold 15% sodium hydroxide solution, 350 ml.) was added to a solution of quinolinimide 7 (50