Straight / unbranched carbon chain is known as n or normal Carbon Chain. Example: n- Heptane
A Carbon chain with two methyl group at one end is traditionally called iso carbon Chain. Example: iso- Heptane
A Carbon chain with three methyl group at one end is traditionally called neo carbon Chain. Example: nep- Heptane
In the given structucture we have all three types of heptane. n-heptane, iso-heptane and neo-heptane.
It is an alkane that consists of pentane bearing two methyl substituents at position 2 and a single methyl substituent at position 4. It has a role as a fuel additive, a non-polar solvent and a nephrotoxin. It is an alkane and a volatile organic compound.