BEIJING, June 26 (Xinhua) -- A group of Chinese researchers has discovered the biosynthesis and release process of the key pheromone that causes a locust outbreak, making an important contribution to ...

1、应用二氯亚砜合成酰氯示例（ Practical organic chemistry ） Fit a 100 mL two-necked flask with a dropping funnel and a reflux condenser connected at the top to a gas absorption trap. Place 36 g (21.5 mL, 0.3 mol) ...