2-Methyl-2-butene

2-Methyl-2-butene, 2m2b, 2-methylbut-2-ene, also amylene is an alkene hydrocarbon with the molecular formula C5H10. 2-Methyl-2-butene, 2m2b, 2-methylbut-2-ene, also amylene is an alkene hydrocarbon with the molecular formula C5H10. Used as a free radical scavenger in trichloromethane (chloroform) and dichloromethane (methylene chloride). John Snow experimented with it in the 1840s as an anesthetic, but stopped using it for unknown reasons.