# Butyllithium

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'''Butyllithium''' may refer to one of 5 isomeric organolithium reagents of which 3 are commonly used in chemical synthesis:

*[''n''-Butyllithium](/source/n-Butyllithium), abbreviated BuLi or <sup>n</sup>BuLi
*[''sec''-Butyllithium](/source/sec-Butyllithium),  abbreviated ''sec''-BuLi or <sup>s</sup>BuLi, has 2 stereoisomers, but is commonly used as racemate
*[''tert''-Butyllithium](/source/tert-Butyllithium), abbreviated ''tert''-BuLi or <sup>t</sup>BuLi
*[Isobutyllithium](/source/Isobutyllithium)

{{Chemistry index}}

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