Question

Hello,
Your help would be appreciated.
"Draw the structural formula for each of the following:
A) 3-isobutylhexane
B) 2,2,4-trimethylpentane ( Isooctane)
Thank you

Answer 1

3-isobutylhexane the name is incorrect, if you have to name it by the longest chain it will be 4 ethyl 2 methylheptane
https://pubchem.ncbi.nlm.nih.gov/compound/521413

B) 2,2,4-trimethylpentane ( Isooctane)
https://en.wikipedia.org/wiki/2,2,4-Trimethylpentane

Answer 2

This might be the other one