Amides (RC(O)NR2) and esters (RC(O)OR′) are classes of acyl compounds, as are ketones (RC(O)R) and aldehydes (RC(O)H).
As amidas (RC(O)NR2) e ésteres (RC(O)OR’) son clases de compostos acilo, igual que as cetonas (RC(O)R) e aldehidos (RC(O)H).