In multisubstituted alkanes, substituents are ordered alphabetically, and identical substituents receive prefix, die, try, tetra, et cetera. So let's look at the last three examples. So once again, we have to keep these two rules in mind. Our first goal is to find the longest straight chain of carbon, so 12345 or 123456. So we choose to go this way. And remember, since we have two substituents, we have a bromo and a methyl.