Carboxylic acid anhydrides
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.
Otto Chemie Pvt Ltd - Manufacturers of Carboxylic acid anhydrides in India.