Amides, RCONH₂

1. The suffix amide is appended to the name of the hydrocarbon corresponding to the carbon chain that includes the carbonyl group. That is, alkan(e) ++ amide == alkanamide. A one-carbon chain is a carboxamide:

2. When the amide nitrogen is substituted with lower-ranking groups than the acyl group, the substituents are designated as prefixes. The letter N is used to show that the substitution is on nitrogen:

3. Names for amides as substituents include the following: