Pour the crude product into a separatory funnel and the aqueous layer is removed.

将此粗产物倒入分液漏斗中，分去水层。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托度酸.采用混合溶剂对粗品进行精制,得到了高纯度的依托度酸.

The results showed that the major component of the crude product was the desired tridecapeptide and the main by-products were derived from the oxidation or deformity of the desired peptide.

结果证明，粗产物中的主成分即为目标十三肽，另外几个主要副产物为十三肽的残缺肤或氧化肽。