Butyllithium

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


 * n-Butyllithium, abbreviated BuLi or nBuLi
 * sec-Butyllithium, abbreviated sec-BuLi or sBuLi, has 2 stereoisomers, but is commonly used as racemate
 * isobutyllithium
 * tert-Butyllithium, abbreviated tert-BuLi or tBuLi