>> my guess is that the name is 1, 5-Dimethyl Pentane << CH3 | CH2-CH2-CH2-CH2-CH2 | CH3 Ahhhh, they got you! That is simply heptane, CH3CH2CH2CH2CH2CH2CH3. Remember Rule 1, finding the longest carbon chain. Those two "methyl groups" are not named that way here because those carbons are simply part of the main chain. >> does it matter if it has brackets? << CH3(CH2)6CHCH3 | CH3
That is OK, it just condenses the structural formula a little more. This is 2-methylnonane. Unless there is a a really long CH2 repeat, I normally write all the CH2's just to make the structure as clear as possible.
CH3CH2CH2CH2CH2CH2CH2CHCH3 | CH3
Steve |