Groups formed by removing one or more hydroxy groups from oxoacids that have the general structure RkE(=O)l(OH)m (l ≠ 0), and replacement a such acyl groups. In organic chemistry an unspecified acyl group is commonly a carboxylic acyl group., rühmad, mis tekivad ühe või mitme hüdroksorühma eemaldamisel oksohapete molekulist