Carboxylate ester

A carboxylate ester is an ester where the parent acid is a carboxylic acid.

Most typically, the term 'ester' means a carboxylate ester. Although accurately, the acid part of an ester can be any acid.

For one, methyl formate is a carboxylate ester.

Contrarily, dimethyl sulfate is an ester that is not a carboxylate ester.