Systematic naming

[bentennason]

Was wondering... If a compound (eg. CH3CH2(CH3)CH2ClCH3) has a methyl branch and chloro functional group, when we name the compound, is it:
3-methyl, 2-chlorobutane OR 2-chloro, 3-methylbutane. Since it contains a chloro functional group, should it be the 1st option or does the alphabetical order take precedence?

[Mao]

It needs to be alphabetical.

Also, be careful with the punctuations. Commas only between numbers and numbers, hyphens only between numbers and letters. No spaces.

:. 2-chloro-3-methylbutane