Carbon is somewhat unique in that it is able to make compounds with multiple branches. These leads to the formation of millions of different organic compounds, many of which are isomers. Structural is...Carbon is somewhat unique in that it is able to make compounds with multiple branches. These leads to the formation of millions of different organic compounds, many of which are isomers. Structural isomers are compounds that have the same molecular formula but different structural formulas. It is important that each unique isomer has its own unique name. These names are systematically determined by a series of steps.