- oate (which is sometimes shortened to –ate for pronunciation purposes). Formic acid is the
common name for methanoic acid, but this is a carboxylic acid—not a derivative.
15 . C
Draw out the molecule, and you will see that the longest carbon chain with the substituents at
the lowest possible carbon numbers is actually different from the one chosen in the original
name. The correct IUPAC name for this molecule is 3-ethyl-4-methylhexane.