However if one uses the penG procaine the injections must be givenevery day. Bicillin with the benzathine component is given every otherday.

不论如何，如用普鲁卡因青霉素的话，这个药必须每天注射次。而苄星青霉素则需要两天注射次。

The phenylacetyl ethanolamine,a low toxic precurson of benzylpenicillin,was synthesized by using ethyl phenylacetate and colamine as raw materials.

以苯和醇胺为原料合成了苄青霉素低毒前体苯酰基醇胺。