有机和生物化学家对自然作战的战略一向只能凭借自己的观察和推断,自从同位素的发现和应用以来,才算是有了可靠的情报员,本文的目的是要简单地介绍如何将这情报员转变得和它要混入的分子群一模一样,也就是说如何将示踪元素制备成各种不同的标记有机化合物,至于如何利用这些情报员探刺军情,如有机化学的反应历程,生物化学的新陈代谢,农业、医学、工矿等各方面的机密,各有专书介绍,本文不拟涉及。本文要谈到的限于有关(A)有机化合物中最基本的碳与氢的同位素及其原材料是如何产生出来;(B)如何将这些原材料变成标记有机化合物;(C)如何提纯制备好的化合物并证明它确是所要求的那种分子结构。 Organic and biochemists’ strategies of fighting nature have always been based solely on their own observations and inferences, and since the discovery and use of isotopes, there has been a credible intelligence officer. The purpose of this article is to briefly describe how the intelligence officer Transforming into exactly the same group of molecules that it is to be mixed in, that is, how to prepare tracer elements into a variety of labeled organic compounds. As to how to use these informants to detect military forces, such as organic chemistry, biochemical metabolism , Agriculture, medicine, mining and other areas of confidentiality, each with a book introduction, this article does not intend to be involved. This article addresses how the isotopes of carbon and hydrogen, the most basic of organic compounds (A), and their starting materials are produced; (B) How to turn these starting materials into labeled organic compounds; (C) How to purify the prepared Compound and prove that it is indeed the kind of molecular structure required.