Organic Chemistry with BiologicalApplications,3rEdition John McMurry Chapter 09 Aromatic Compounds Aromatic rings are a common part of many biological structures and are particularty important in the chemistry of nucleic acids and several amino acids. How and why aromatic compounds are different from such apparently related compounds as alkenes.Chapter 09 Aromatic Compounds Organic Chemistry with Biological Applications, 3 rd Edition John McMurry Aromatic rings are a common part of many biological structures and are particularly important in the chemistry of nucleic acids and several amino acids. How and why aromatic compounds are different from such apparently related compounds as alkenes