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Chemical compound
Isobutyric anhydride is an organic compound with the formula . It is an acyclic carboxylic anhydride of isobutyric acid. It is classified as an organic acid anhydride, being derived from dehydration of isobutyric acid. It is a colorless liquid with a strong, pungent odor. 
Isobutyric anhydride is a reagent in the production of the ester of cyclohexanone oxime.
Applications.
Isobutyric anhydride is used as an acylating agent in organic synthesis. Its primary application is in the production of esters, such as cyclohexanone oxime. Isobutyric anhydride is used in the synthesis of various dyes. It is also used in the production of cellulose derivatives, such as cellulose isobutyrate and cellulose acetate isobutyrate. Another application of isobutyric anhydride is in the synthesis of various chemical derivatives. For example, it is used to produce 4-"O"-isobutyryl derivatives of monosaccharides.