METHODS: The target compound was synthesized from N - benzyl protected aminoacetophenone through hydrogenation, benzoylation and reduction.方法: 以氮 - 苄基保护胺基酮为原料,经氢化, 苯甲酰化,还原三步合成双苯甲酰沙丁胺醇酯....
They succeed in differentiating the most commodity - like products.在最通用的日用产品方面,它们也能独树一帜标新立异.The simplest and most effective method of differentiating areas is to use different colours.区别面状要素最简单而又行之有效的办法,是使用不同的颜色.In diffe...