有些人把VX说的好像军事机密一样，还所谓只有国家才能合成。这是知乎，不是天涯铁血。VX这东西没啥技术含量，合成路线很多，是公开的，在网上就可以搜到。比如维基百科就有。
方法/步骤
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摘抄一段：
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VX is produced via the transester process. This entails a series of steps whereby phosphorus trichloride is methylated to produce methyl phosphonous dichloride. The resulting material is reacted with ethanol to form a diester. This is then transesterified with N,N-diisopropylaminoethanol to produce the mixed phosphonite. Finally, this immediate precursor is reacted with sulfur to form VX.
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其中大部分原料网上都可以买到。最后，如果想彻底搞懂维基百科上在说什么，或者想具有正确回答题主的基本能力的话，可以去看看书：比如