The compound with the molecular formula C8H16 can refer to several different isomers. Isomers are molecules with the same molecular formula but different structural arrangements.

Here are a few possibilities:

* Octane: This is the most common isomer of C8H16 and is a major component of gasoline.

* 2,2,4-Trimethylpentane: Also known as iso-octane, this is a branched alkane used as a reference standard for the octane rating of gasoline.

* Cyclooctane: This is a cyclic alkane with eight carbon atoms in a ring.

* Other isomers: There are several other possible isomers with the formula C8H16, including different branched alkanes and cycloalkanes.

To determine the specific name of the compound, you would need additional information about its structure, such as:

* The IUPAC name: This is the systematic name based on the structure of the molecule.

* A structural formula: This shows the arrangement of atoms in the molecule.

Let me know if you have any more information about the compound, and I can help you identify it more precisely.