Why is there no compound called 3,6-dimethylheptane?

I'm doing chemistry homework, but I can't seem to figure this one out. Thanks.:)

Anonymous2011-07-12T19:43:32Z

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Standard organic nomenclature would indicate that naming straight chain alkanes should be done by using the lowest possible number combination. In the case of 3,6-dimethylheptane, an alternate name would be created by starting the numbering at the opposite end of the 7 carbon chain. Thus yielding the name of 2,5-dimethylheptane. This is a better, and the correct name for that compound.

nameless2011-07-12T19:45:23Z

when naming molecules u have to have the lowest numbering. 3,6 is not the lowest numbering scheme. draw it out then find the position of the methyl group

xezlec2011-07-12T19:39:37Z

Try drawing it. Then see if you think that was a good name for it.