“苯甲基”造句
2024年06月26日 05:01:03
发现在酸性低粘度醇类溶剂中,五甲氧基三
苯甲基正离子的褪色现象.
It was observed that the pentamethoxyl red was fading in atidity and viscose alcohol.
目的探讨西替利嗪的中间体1-犤 ( 4- 氯苯基 )
苯甲基 犦 - 哌嗪的合成方法的改进.
Objective To study improved synthetic method of 1 - [ ( 4 - chlorophenyl ) phenylmethyl ] - piperazine, the intermediate of cetirizine hydrochloride.
介绍了三
苯甲基自由基 、 三
苯甲基正离子和三
苯甲基负离子的实验方法.
The experimental method of triphenyl methyl radical, triphenyl methyl cation and triphenyl methyl anion were reviewed.