### Question
Can you define what precursor means?


### Answer
**Precursor** is defined as the following in *22 U.S.C. § 6701*:

> any chemical reactant which takes part at any stage in the production by whatever method of a toxic chemical

#### Citation:
  - *22 U.S.C. § 6701*
  - Heading: **CHAPTER 75-CHEMICAL WEAPONS CONVENTION IMPLEMENTATION**

