What is the IUPAC name of CH₃CH(CH₃)CH₂Cl ?

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1-Chloro-2-methylbutane Correct 2-Chloro-3-methylbutane 1-Chloro-3-methylbutane 4-Chloro-2-methylbutane

The longest chain is four carbons (butane), with a methyl group on the second carbon and chlorine on the fourth. The name is 1-chloro-2-methylbutane.

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