# What is the correct name of 3-isopropyl-4-methylhexane?

In the branched alkane shown above, I've been told that 3-isopropyl-4-methylhexane is supposedly the correct name. However, in the alternative numbering scheme on the right, the parent chain is still of the same length (six carbon atoms) and has more substituents, so shouldn't that be the preferred name?

Note also that according to current IUPAC nomenclature recommendations (P-57.1.1.1 of the 2013 Blue Book), the preferred prefix for $\ce{-CH(CH3)2}$ is "propan-2-yl", not "isopropyl".