首先研究尼泊金庚酯的合成。

In the first part, the synthesis of heptyl paraben was studied.

youdao

接线员，我想打个电话到加拿大温尼泊。电话号码是932—0806。

B: Operator, I'd like to place a call to Winnipeg, Canada.The number is 932_0806.

youdao

接线员，我想打个电话到加拿大温尼泊。电话号码是932—0806。

B: Operator, I'd like to place a call to Winnipeg, Canada.The number is 932_0806.

youdao