A new metal-free method for the synthesis of 3-fluoro-2-oxindoles was developed.2-iodo-2-fluoro-N-phenylacetamide was pr......

目的 研究催化动力学光度法测定小麦粉中吊白块的方法。方法 在硫酸介质中,甲醛可灵敏地催化溴酸钾氧化中性红的退色反应。选择研......