1-CHLORO-3-METHYL-2-BUTENE 1-Chloro-3-methylbut-2-ene 2-Butene, 1-chloro-3-methyl- 219555-05-2 3,3-Dimethylallyl chloride 3-Methyl-2-butenyl chloride 3-Methylcrotyl chloride 503-60-6 EINECS 207-972-7 HSDB 6129 Prenyl chloride gamma,gamma-Dimethylallyl chloride