The colorless platelets were filtered washed with cold methanol.将无色的小片状物过滤出来,用冷的甲醇洗涤.The crude, wet benzoate ( 118 grams ) was dissolved with reflux in 1 , 400 ml methanol.将粗制 、 湿的苯甲酸酯 ( 118克 ) 回流着溶于1400毫升甲醇中.The crude, ...

n.二甲乙醇胺...

氨基乙醇...