Practice Problem 2

The following compounds are the active ingredients in over-the-counter drugs used as analgesics (to relieve pain without decreasing sensibility or consciousness), antipyretics (to reduce the body temperature when it is elevated), and/or anti-inflammatory agents (to counteract swelling or inflammation of the joints, skin, and eyes). Identify the functional groups in each molecule.



All three compounds are aromatic. Aspirin is also a carboxylic acid (--CO2H) and an ester (--CO2CH3). Tylenol is also an alcohol (--OH) and an amide (--CONH--). Ibuprofen contains alkane substituents and a carboxylic acid functional group.