Organic acid anhydride

An organic acid anhydride is an acid anhydride that is also an organic compound. An acid anhydride is a compound that has two acyl groups bonded to the same oxygen atom. A common type of organic acid anhydride is a carboxylic anhydride, where the parent acid is a carboxylic acid, the formula of the anhydride being (RC(O))2O. Symmetrical acid anhydrides of this type are named by replacing the word acid in the name of the parent carboxylic acid by the word anhydride.

Extends: [Acid anhydrides](https://wikipedia.org.ai/Acid anhydrides), [Functional groups](https://wikipedia.org.ai/Functional groups), [Carboxylic anhydrides](https://wikipedia.org.ai/Carboxylic anhydrides)