醌类化合物均可显色的反应是() ["Feigl反应","无色亚甲蓝显色试验","氢氧化钠溶液反应","乙酸镁反应","对亚硝基二甲苯胺反应"]
用葡聚糖凝胶色谱分离下列化合物,最先被洗脱流下来的是() ["大黄素","番泻苷B","大黄酚","紫草素","茜草素"]
番泻苷A中两个蒽酮母核的连接位置是() ["C1-C1","C2-C2","C9-C9","C10-C10","C9-C10"]
蒽醌类化合物中,下列基团进行甲基化反应,最容易反应的是() ["醇羟基","酰基","β-酚羟基","α-酚羟基","羧基"]
下列乙酰化试剂,酰化能力最强的是() ["冰乙酸","醋酐","浓硫酸","乙酸酯","乙酰氯"]
穿隔离衣注意事项